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CN115937301A - Dual-camera calibration method and dual-camera positioning method - Google Patents

Dual-camera calibration method and dual-camera positioning method Download PDF

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CN115937301A
CN115937301A CN202211450967.0A CN202211450967A CN115937301A CN 115937301 A CN115937301 A CN 115937301A CN 202211450967 A CN202211450967 A CN 202211450967A CN 115937301 A CN115937301 A CN 115937301A
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camera
target object
tracking camera
tracking
positioning
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詹建勋
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Ava Electronic Technology Co Ltd
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Abstract

本发明公开一种双摄像机标定方法及双摄像机的定位方法。其中,该双摄像机标定方法,包括步骤:获取检测事件;控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象;根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点;根据所述检测事件,利用AI视觉检测技术在全景摄像机拍摄的视频中捕捉目标对象;根据全景摄像机的目标对象确定全景摄像机的定位关键点;关联全景摄像机的定位关键点和跟踪摄像机的定位关键点。本方法用AI检测技术代替了人工标定位置,减少了繁琐的操作,大大减少了现场调试人员的工作量,并且借助于机器的稳定性,减少了因为人为原因带来的测量误差,保证定位的准确性。

Figure 202211450967

The invention discloses a double camera calibration method and a double camera positioning method. Wherein, the dual-camera calibration method includes the steps of: obtaining a detection event; controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event; determining the key point of positioning of the tracking camera according to the target object captured by the tracking camera; According to the detection event, use AI visual detection technology to capture the target object in the video shot by the panoramic camera; determine the positioning key point of the panoramic camera according to the target object of the panoramic camera; associate the positioning key point of the panoramic camera with the positioning key point of the tracking camera. This method replaces the manual calibration position with AI detection technology, which reduces cumbersome operations and greatly reduces the workload of on-site commissioning personnel. With the help of the stability of the machine, it reduces the measurement error caused by human factors and ensures the accuracy of positioning. accuracy.

Figure 202211450967

Description

双摄像机标定方法及双摄像机的定位方法Dual-camera calibration method and dual-camera positioning method

技术领域technical field

本发明涉及视频图像处理的技术领域,更具体地,涉及一种双摄像机标定方法及双摄像机的定位方法、装置、设备及存储介质。The present invention relates to the technical field of video image processing, and more specifically, to a dual-camera calibration method, a dual-camera positioning method, a device, a device, and a storage medium.

背景技术Background technique

近年来,随着视频拍摄技术的发展,采用全景摄像机与跟踪摄像机联动来跟踪拍摄目标物体的技术被越来越广泛地利用。然而,由于全景摄像机和跟踪摄像机之间的位置关系不确定,即使存在相对确定的关系,但是由于存在安装等方面的误差,也使得所需要的映射关系不能够精确明确,因此关联调试标定是全景和跟踪摄像机系统的必须步骤。In recent years, with the development of video shooting technology, the technology of using a panoramic camera and a tracking camera to track and shoot a target object is more and more widely used. However, due to the uncertain positional relationship between the panoramic camera and the tracking camera, even if there is a relatively definite relationship, the required mapping relationship cannot be precisely defined due to errors in installation and other aspects. Therefore, the associated debugging calibration is a panoramic and a necessary step for tracking camera systems.

现有的全景摄像机与跟踪摄像机的调试关联控制过程中,对于关键点的标定管理,比较常用的方法是人工标定,即通过肉眼去确认两台摄像机拍摄的位置是否一致,在位置为一致时,关联这两台摄像机的拍摄坐标。这样做准确度不能十分得到保证,而且还会花费调试人员的大量时间去确认调整位置,工作效率低,定位效果差。In the existing debugging and associated control process of the panoramic camera and the tracking camera, for the calibration management of key points, the more commonly used method is manual calibration, that is, to confirm whether the shooting positions of the two cameras are consistent with the naked eye. When the positions are consistent, Associate the shooting coordinates of these two cameras. In this way, the accuracy cannot be fully guaranteed, and it will take a lot of time for the debugger to confirm the adjustment position, resulting in low work efficiency and poor positioning effect.

发明内容Contents of the invention

本发明为克服人工调试摄像机效率低、定位效果差的缺陷,提供一种双摄像机标定方法、装置、设备及存储介质,本发明采用的技术方案如下。In order to overcome the defects of low efficiency and poor positioning effect of manual camera adjustment, the present invention provides a dual camera calibration method, device, equipment and storage medium. The technical scheme adopted in the present invention is as follows.

第一方面,本发明提供一种双摄像机标定方法,包括步骤:In a first aspect, the present invention provides a dual-camera calibration method, comprising the steps of:

获取检测事件;Get detection events;

控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象;Control the tracking camera to capture the target object using AI visual detection technology according to the detection event;

根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点;Determine the positioning key points of the tracking camera according to the target object captured by the tracking camera;

根据所述检测事件,利用AI视觉检测技术在全景摄像机拍摄的视频中捕捉目标对象;According to the detection event, utilize AI visual detection technology to capture the target object in the video shot by the panoramic camera;

根据全景摄像机的目标对象确定全景摄像机的定位关键点;Determine the positioning key points of the panoramic camera according to the target object of the panoramic camera;

关联全景摄像机的定位关键点和跟踪摄像机的定位关键点。Associate the positioning key of the panorama camera with the positioning key of the tracking camera.

在一种实施方式中,所述控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象的过程,包括步骤:In one embodiment, the process of controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event includes the steps of:

获取待定位关键点信息;Obtain key point information to be located;

根据所述待定位关键点信息控制跟踪摄像机转动所述待定位关键点信息对应的拍摄初始位置;controlling the tracking camera to rotate the shooting initial position corresponding to the key point information to be located according to the key point information to be located;

启动跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象。Start the tracking camera to capture the target object using AI visual detection technology according to the detection event.

在一种实施方式中,所述控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象的过程,包括步骤:In one embodiment, the process of controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event includes the steps of:

获取预置拍摄范围;Get the preset shooting range;

控制跟踪摄像机根据所述检测事件利用AI视觉检测技术在所述预置拍摄范围捕捉目标对象。Control the tracking camera to capture the target object in the preset shooting range by using AI visual detection technology according to the detection event.

在一种实施方式中,所述根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点的过程中,根据目标对象的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标;In one embodiment, in the process of determining the positioning key point of the tracking camera according to the target object captured by the tracking camera, the coordinates of the positioning key point in the shooting of the tracking camera are determined according to the center position of the target object;

所述根据全景摄像机的目标对象确定全景摄像机的定位关键点的过程中,根据目标的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标。In the process of determining the positioning key point of the panoramic camera according to the target object of the panoramic camera, the coordinates of the positioning key point in the tracking camera shooting are determined according to the center position of the target.

在一种实施方式中,所述所述预设检测事件是人头检测事件。In one implementation manner, the preset detection event is a head detection event.

第二方面,本发明提供一种双摄像机的定位方法,包括步骤:In a second aspect, the present invention provides a positioning method for dual cameras, comprising the steps of:

获取全景摄像机与跟踪摄像机之间的坐标转换关系、全景摄像机中目标对象的坐标和目标对象的检测事件,其中,所述坐标转换关系中的定位关键点通过前述任一实施方式所述的双摄像机标定方法得到;Acquire the coordinate transformation relationship between the panoramic camera and the tracking camera, the coordinates of the target object in the panoramic camera, and the detection event of the target object, wherein the positioning key points in the coordinate transformation relationship are obtained through the dual cameras described in any of the preceding embodiments The calibration method is obtained;

根据所述坐标转换关系,将所述全景摄像机中目标对象的坐标换算成跟踪摄像机中目标对象的坐标;Converting the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relationship;

根据所述跟踪摄像机中目标对象的坐标,控制跟踪摄像机转到对应的位置;According to the coordinates of the target object in the tracking camera, control the tracking camera to go to the corresponding position;

根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,并对跟踪摄像机位置进行调整,使得目标对象在拍摄画面的预设位置上。According to the detection event, the tracking camera is controlled to capture the target object using AI visual detection technology, and the position of the tracking camera is adjusted so that the target object is at the preset position of the shooting picture.

在一种实施方式中,还包括步骤:In one embodiment, further comprising the steps of:

按照预设的目标对象在画面中的比例对所述跟踪摄像机进行变焦。The tracking camera is zoomed according to the preset ratio of the target object in the frame.

第三方面,本发明提供一种双摄像机标定装置,包括:In a third aspect, the present invention provides a dual-camera calibration device, including:

获取模块,用于获取检测事件;An acquisition module, configured to acquire detection events;

捕捉模块,用于根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,利用AI视觉检测技术在全景摄像机拍摄的视频中捕捉目标对象;The capture module is used to control the tracking camera to capture the target object using AI visual detection technology according to the detection event, and use the AI visual detection technology to capture the target object in the video shot by the panoramic camera;

确定模块,用于根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点,根据全景摄像机的目标对象确定全景摄像机的定位关键点;Determining module, for determining the positioning key point of tracking camera according to the target object captured by tracking camera, determining the positioning key point of panoramic camera according to the target object of panoramic camera;

关联模块,用于关联全景摄像机的定位关键点和跟踪摄像机的定位关键点。The association module is used for associating the positioning key points of the panoramic camera and the positioning key points of the tracking camera.

第四方面,本发明提供一种双摄像机的定位装置,其特征在于,包括:In a fourth aspect, the present invention provides a dual-camera positioning device, which is characterized in that it includes:

获取模块,用于获取全景摄像机与跟踪摄像机之间的坐标转换关系、全景摄像机中目标对象的坐标和目标对象的检测事件,其中,所述坐标转换关系中的定位关键点通过前述的双摄像机标定装置得到;An acquisition module, configured to acquire the coordinate transformation relationship between the panoramic camera and the tracking camera, the coordinates of the target object in the panoramic camera, and the detection event of the target object, wherein the positioning key points in the coordinate transformation relationship are calibrated by the aforementioned dual cameras The device gets;

换算模块,用于根据所述坐标转换关系,将所述全景摄像机中目标对象的坐标换算成跟踪摄像机中目标对象的坐标;A conversion module, configured to convert the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relationship;

控制模块,用于根据所述跟踪摄像机中目标对象的坐标,控制跟踪摄像机转到对应的位置;A control module, configured to control the tracking camera to go to a corresponding position according to the coordinates of the target object in the tracking camera;

确认模块,用于根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,并对跟踪摄像机位置进行调整,使得目标对象在拍摄画面的预设位置上。The confirmation module is used to control the tracking camera to capture the target object by using the AI visual detection technology according to the detection event, and adjust the position of the tracking camera so that the target object is at the preset position of the shooting picture.

第五方面,本发明提供一种计算机设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述程序时实现上述任一实施方式的方法。In a fifth aspect, the present invention provides a computer device, including a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, the method of any of the above-mentioned embodiments is implemented .

第六方面,本发明提供一种计算机可读存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时实现上述任一实施方式的方法。In a sixth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the method in any one of the above-mentioned implementation modes is implemented.

本发明中,采用AI检测技术捕捉目标对象,根据目标对象得出并关联两台摄像机的定位关键点,用AI检测技术代替了人工标定位置,减少了繁琐的操作,大大减少了现场调试人员的工作量,并且借助于机器的稳定性,减少了因为人为原因带来的测量误差,保证定位的准确性。另外,本发明的定位过程简单,跟踪定位过程计算量少,定位准确,画面效果呈现好。In the present invention, the AI detection technology is used to capture the target object, and the key positioning points of the two cameras are obtained and associated according to the target object, and the artificial calibration position is replaced by the AI detection technology, which reduces cumbersome operations and greatly reduces the work of on-site debugging personnel. workload, and with the help of the stability of the machine, the measurement error caused by human factors is reduced to ensure the accuracy of positioning. In addition, the positioning process of the present invention is simple, the amount of calculation in the tracking and positioning process is small, the positioning is accurate, and the picture effect is good.

附图说明Description of drawings

图1是本发明实施例一流程示意图。Fig. 1 is a schematic flow chart of Embodiment 1 of the present invention.

图2是本发明实施例一的显示示意图。FIG. 2 is a schematic display diagram of Embodiment 1 of the present invention.

图3是本发明实施例二流程示意图。Fig. 3 is a schematic flow chart of Embodiment 2 of the present invention.

图4是本发明实施例三整体结构示意图。Fig. 4 is a schematic diagram of the overall structure of Embodiment 3 of the present invention.

图5是本发明实施例四整体结构示意图。Fig. 5 is a schematic diagram of the overall structure of Embodiment 4 of the present invention.

具体实施方式Detailed ways

下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

需要说明的是,本发明实施例所涉及的术语“第一\第二\……”仅仅是是区别类似的对象,不代表针对对象的特定排序,可以理解地,“第一\第二\……”在允许的情况下可以互换特定的顺序或先后次序。应该理解“第一\第二\……”区分的对象在适当情况下可以互换,以使这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。It should be noted that the term "first\second\..." involved in the embodiment of the present invention is only to distinguish similar objects, and does not represent a specific ordering of objects. Understandably, "first\second\ ..." are interchangeable in specific order or sequence where permissible. It should be understood that "first\second\..." distinctions are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

实施例一Embodiment one

请参见图1,图1为本发明实施例一提供的一种双摄像机标定方法的流程示意图,该方法包括步骤S110、步骤S120、步骤S130、步骤S140、步骤S150和步骤S160。需要注意的是,步骤S110、步骤S120、步骤S130、步骤S140、步骤S150和步骤S160仅为附图标记,用于清晰解释实施例与附图1的对应关系,不代表对本实施例中各步骤的顺序限定。Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of a dual-camera calibration method provided by Embodiment 1 of the present invention. The method includes step S110 , step S120 , step S130 , step S140 , step S150 and step S160 . It should be noted that step S110, step S120, step S130, step S140, step S150 and step S160 are only reference numerals, which are used to clearly explain the corresponding relationship between the embodiment and the accompanying drawing 1, and do not mean that each step in this embodiment The sequence is limited.

步骤S110,获取检测事件;Step S110, acquiring detection events;

步骤S120,控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象;Step S120, controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event;

步骤S130,根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点;Step S130, determine the positioning key point of the tracking camera according to the target object captured by the tracking camera;

步骤S140,根据所述检测事件,利用AI视觉检测技术在全景摄像机拍摄的视频中捕捉目标对象;Step S140, according to the detection event, using AI visual detection technology to capture the target object in the video shot by the panoramic camera;

步骤S150,根据全景摄像机的目标对象确定全景摄像机的定位关键点;Step S150, determining key points for positioning the panoramic camera according to the target object of the panoramic camera;

步骤S160,关联全景摄像机的定位关键点和跟踪摄像机的定位关键点。Step S160, associating the positioning key points of the panoramic camera with the positioning key points of the tracking camera.

定位关键点是指当前要定位的关键点,例如,如果要定位一个矩形区域的话,选取矩形的四个顶角作为关键点。本方法中对于定位关键点选取的方位没有限制,只要选取的点能够在全景摄像机与跟踪摄像机上关联上,都可以作为关键点。Positioning key point refers to the key point to be positioned currently, for example, if a rectangular area is to be positioned, select the four corners of the rectangle as key points. In this method, there is no restriction on the selected orientation of the positioning key point, as long as the selected point can be associated with the panoramic camera and the tracking camera, it can be used as a key point.

本方法是通过AI检测技术代替人工标定位置,所以在AI检测之前,要获取检测事件。所述检测事件就是利用AI去检测的事件,例如,站立检测、人体检测、人头检测等。在获得了检测时间后,就可以利用AI去检测到对应的事件,在检测到对应的事件时,就可以根据该事件捕捉到对应的目标,例如,在站立检测中,把站立的人物作为目标对象,在人脸检测中,将人脸对象作为目标对象。因此,步骤S120中,控制跟踪摄像机转动,以检测事件并捕捉目标对象,步骤S140中,在全景神相机拍摄的视频中捕捉目标对象。This method uses AI detection technology to replace the manual calibration position, so before AI detection, detection events must be obtained. The detection event is an event detected by AI, for example, standing detection, human body detection, human head detection, and the like. After the detection time is obtained, AI can be used to detect the corresponding event. When the corresponding event is detected, the corresponding target can be captured according to the event. For example, in the standing detection, the standing person is used as the target Object, in face detection, the face object is used as the target object. Therefore, in step S120, control the rotation of the tracking camera to detect events and capture the target object, and in step S140, capture the target object in the video shot by the panorama camera.

这里需要说明的是,如果当前检测事件中有两个目标对象,则这两个目标对象都会被捕捉到,所以使用本方法时,应该要尽可能地确认检测事件中仅可以捕捉到一个目标对象。What needs to be explained here is that if there are two target objects in the current detection event, both target objects will be captured, so when using this method, it should be confirmed as much as possible that only one target object can be captured in the detection event .

由于目标对象在视频画面中是一个比较大的范围,而定位关键点则是相对比较精确的点,所以要根据捕捉到的目标对象中确定可以代表该目标对象的点,再根据该代表点确定定位关键点,例如,最常规的是选取目标对象的中心位置作为代表该目标对象的点,以该该目标对象的点作为定位关键点。除了最常规的做法外,本领域技术人员也可以根据实际情况,订立如何通过目标对象确定代表点的规则,本实施方式中对订立的规则不作限制。Since the target object is in a relatively large range in the video screen, and the positioning key point is a relatively precise point, it is necessary to determine the point that can represent the target object according to the captured target object, and then determine according to the representative point. To locate the key point, for example, the most conventional is to select the center position of the target object as the point representing the target object, and use the point of the target object as the key point for positioning. In addition to the most conventional approach, those skilled in the art may also formulate rules on how to determine representative points through target objects according to actual conditions, and there is no limitation to the established rules in this implementation manner.

通过AI检测技术对事件进行检测,可以比较可靠统一地得到目标对象的范围,进而根据目标对象比较可靠统一地得出代表点,从而准确地确定定位关键点。By detecting events with AI detection technology, the scope of the target object can be obtained more reliably and uniformly, and then the representative points can be obtained more reliably and uniformly according to the target object, so as to accurately determine the key points of positioning.

通过步骤S130和步骤S150,分别得到跟踪摄像机和全景摄像机的定位关键点后,就可以将两个定位关键点关联起来。通过本方法将需要的定位关键点的都关联起来后,就可以根据各自的坐标体系建立全景摄像机与跟踪摄像机之间的坐标映射关系了。Through step S130 and step S150, after obtaining the positioning key points of the tracking camera and the panoramic camera respectively, the two positioning key points can be associated. After all the required positioning key points are associated through this method, the coordinate mapping relationship between the panoramic camera and the tracking camera can be established according to their respective coordinate systems.

本方法中,采用AI检测技术捕捉目标对象,根据目标对象得出并关联两台摄像机的定位关键点,用AI检测技术代替了人工标定位置,减少了繁琐的操作,大大减少了现场调试人员的工作量,并且借助于机器的稳定性,减少了因为人为原因带来的测量误差,保证定位的准确性。In this method, the AI detection technology is used to capture the target object, and the key positioning points of the two cameras are obtained and associated with the target object, and the manual calibration position is replaced by the AI detection technology, which reduces cumbersome operations and greatly reduces the on-site commissioning personnel's time. workload, and with the help of the stability of the machine, the measurement error caused by human factors is reduced to ensure the accuracy of positioning.

在一种实施方式中,所述S120的过程,包括:步骤S121、步骤S122和步骤S123。In one implementation manner, the process of S120 includes: step S121, step S122, and step S123.

步骤S121,获取待定位关键点信息;Step S121, obtaining key point information to be located;

步骤S122,根据所述待定位关键点信息控制跟踪摄像机转动所述待定位关键点信息对应的拍摄初始位置;Step S122, controlling the tracking camera to rotate the shooting initial position corresponding to the key point information to be located according to the key point information to be located;

步骤S123,启动跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象。Step S123, start the tracking camera to capture the target object by using AI visual detection technology according to the detection event.

如图2所示,图2是以四个关键点为例进行进行,图2是全景摄像机拍摄的画面,在全景摄像机拍摄的画面中圈定四个关键点搜索区域(左上、左下、右上、右下)。一般来说,做定位关键点关联时,每次都会将目标对象放置于上述四个关键点搜索区域之一的位置范围内。与之相类似的,跟踪摄像机也会被较为粗略地确定好关于这四个关键点搜索区域的拍摄初始位置。As shown in Figure 2, Fig. 2 is carried out with four key points as an example, Fig. 2 is the picture taken by the panoramic camera, in the picture taken by the panoramic camera, four key point search areas are delineated (upper left, lower left, upper right, right Down). Generally speaking, when doing positioning key point association, the target object will be placed within the position range of one of the above four key point search areas every time. Similarly, the initial shooting positions of the tracking camera will be roughly determined for the four key point search areas.

本实施方式中,还要获取待定位关键点信息,通过该关键点信息可以知道当前要定位的关键点在哪个搜索区域内,假如是左上区域,那么就控制跟踪摄像机转动左上区域所对应的拍摄初始位置上,以方便跟踪摄像机能够更加快速地捕捉目标对象。In this embodiment, it is also necessary to obtain key point information to be located. Through this key point information, it can be known in which search area the key point to be located is currently located. If it is the upper left area, then the tracking camera is controlled to rotate the corresponding shooting of the upper left area At the initial position, it is convenient for the tracking camera to capture the target object more quickly.

这里需要说明的是,对应待定位关键信息是哪种类型的信息,本实施方式不作限制,其可以是坐标信息或其他信息,总之,在收到该信息后,能够确认转到哪个关键点对应的拍摄初始位置即可。What needs to be explained here is that this embodiment does not limit the type of information corresponding to the key information to be located, it may be coordinate information or other information. The initial position of the shooting is enough.

在一种实施方式中,所述S120的过程,包括:步骤S123和步骤S124。In one implementation manner, the process of S120 includes: step S123 and step S124.

步骤S123,获取预置拍摄范围;Step S123, acquiring a preset shooting range;

步骤S124,控制跟踪摄像机根据所述检测事件利用AI视觉检测技术在所述预置拍摄范围捕捉目标对象。Step S124, controlling the tracking camera to capture the target object in the preset shooting range by using AI visual detection technology according to the detection event.

如前面一个实施例中所述,各个关键点其实是有大概的位置范围的,在这个位置范围之外的目标对象不能代表这个关键点,是不能用的。因此,本实施方式中,还对跟踪摄像机预置了拍摄范围,让跟踪摄像机只在指定的拍摄范围内捕捉目标对象,降低错误捕捉目标对象的可能。As mentioned in the previous embodiment, each key point actually has an approximate position range, and target objects outside this position range cannot represent this key point and cannot be used. Therefore, in this embodiment, the shooting range is also preset for the tracking camera, so that the tracking camera can only capture the target object within the specified shooting range, reducing the possibility of erroneously capturing the target object.

在一种实施方式中,步骤S130的过程中,根据目标对象的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标;In one embodiment, in the process of step S130, the coordinates of the positioning key point in the tracking camera shooting are determined according to the central position of the target object;

步骤S150的过程中,根据目标的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标。In the process of step S150, the coordinates of the positioning key point in the tracking camera shooting are determined according to the center position of the target.

本方法是前面所说的,选取目标对象的中心点作为代表该目标对象的点,然后利用该代表点来确定定位关键点在各自摄像机拍摄中的坐标。这里需要说明的是,得到该代表点后,可以直接用该代表点来作为定位关键点,也可以基于该代表点通过一定的运算手段,得出定位关键点。This method is as mentioned above. The center point of the target object is selected as the point representing the target object, and then the representative point is used to determine the coordinates of the positioning key points in the shooting of the respective cameras. What needs to be explained here is that after the representative point is obtained, the representative point can be directly used as the positioning key point, or the positioning key point can be obtained based on the representative point through a certain calculation means.

在一种实施方式中,所述预设检测事件是人头检测事件。In an implementation manner, the preset detection event is a head detection event.

人头的形状比较统一,利用人头检测技术检测出的目标对象的形状相对也比较统一,减少了其他原因带来的测量误差,保证定位的准确性。The shape of the human head is relatively uniform, and the shape of the target object detected by the human head detection technology is relatively uniform, which reduces the measurement error caused by other reasons and ensures the accuracy of positioning.

实施例二Embodiment two

本专利还公开了一种双摄像机的定位方法,该方法中所使用的全景摄像机与跟踪摄像机之间的坐标转换关系的定位关键点通过实施例一所述的双摄像机标定方法得到。该方法包括步骤S210、步骤S220、步骤S230和步骤S240。需要注意的是,步骤S210、步骤S220、步骤S230和步骤S240仅为附图标记,用于清晰解释实施例与附图2的对应关系,不代表对本实施例中各步骤的顺序限定。This patent also discloses a dual-camera positioning method. The positioning key points of the coordinate transformation relationship between the panoramic camera and the tracking camera used in the method are obtained by the dual-camera calibration method described in the first embodiment. The method includes step S210, step S220, step S230 and step S240. It should be noted that step S210, step S220, step S230 and step S240 are only reference numerals, which are used to clearly explain the corresponding relationship between the embodiment and FIG.

步骤S210,获取全景摄像机与跟踪摄像机之间的坐标转换关系、全景摄像机中目标对象的坐标和目标对象的检测事件,其中,所述坐标转换关系中的定位关键点通过实施例一所述的双摄像机标定方法得到;Step S210, obtain the coordinate transformation relationship between the panoramic camera and the tracking camera, the coordinates of the target object in the panoramic camera, and the detection event of the target object, wherein the positioning key points in the coordinate transformation relationship are obtained through the dual The camera calibration method is obtained;

步骤S220,根据所述坐标转换关系,将所述全景摄像机中目标对象的坐标换算成跟踪摄像机中目标对象的坐标;Step S220, converting the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relationship;

步骤S230,根据所述跟踪摄像机中目标对象的坐标,控制跟踪摄像机转到对应的位置;Step S230, according to the coordinates of the target object in the tracking camera, control the tracking camera to go to the corresponding position;

步骤S240,根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,并对跟踪摄像机位置进行调整,使得目标对象在拍摄画面的预设位置上。Step S240, according to the detection event, control the tracking camera to capture the target object using AI visual detection technology, and adjust the position of the tracking camera so that the target object is at the preset position of the shooting picture.

以四点定位为例,由实施例一得到的定位关键点定位而成的是三维空间中的一个平面,如果全景摄像机与跟踪摄像机都不是正对目标区域进行拍摄的话,在水平方向上会出现一定偏差。在实际场景中,摄像机侧拍目标区域的情况普遍存在,所以需要对目标对象的特写位置进行修正。Taking four-point positioning as an example, the positioning key points obtained in Embodiment 1 are a plane in three-dimensional space. If neither the panoramic camera nor the tracking camera is shooting at the target area, there will be Certain deviation. In actual scenes, it is common for the camera to shoot the target area from the side, so it is necessary to correct the close-up position of the target object.

在经过步骤S230,跟踪摄像机转到对应的位置后,在步骤S240中,根据检测事件启动检测,如站立检测,将目标对象,如站立的人物,移动到拍摄画面的预设位置上,如画面中间。After step S230, after the tracking camera turns to the corresponding position, in step S240, start the detection according to the detection event, such as standing detection, and move the target object, such as a standing person, to the preset position of the shooting picture, such as middle.

本方法的定位过程简单,跟踪定位过程计算量少,定位准确,画面效果呈现好。The positioning process of the method is simple, the calculation amount of the tracking and positioning process is small, the positioning is accurate, and the picture effect is good.

在一种实施方式中,该双摄像机的定位方法还包括:步骤S250。In an implementation manner, the dual camera positioning method further includes: Step S250.

步骤S250,按照预设的目标对象在画面中的比例对所述跟踪摄像机进行变焦。Step S250, zooming the tracking camera according to the preset ratio of the target object in the frame.

为了能够让跟踪摄像机拍摄到大小适合的特写画面,可以先预设一关于预设的目标对象在画面中的比例,当目标对象在画面中的比例与该预设的比例一致时,就认为特写画面的目标对象大小合适,呈现更好的画面效果。In order to allow the tracking camera to capture a close-up picture of a suitable size, you can first preset a ratio of the preset target object in the screen. When the ratio of the target object in the screen is consistent with the preset ratio, it is considered a close-up The size of the target object in the picture is appropriate to present a better picture effect.

实施例三Embodiment Three

与实施例一的方法相对应,如图4所示,本发明还提供一种双摄像机标定装置4,包括:获取模块410、捕捉模块420、确定模块430和关联模块440。Corresponding to the method in Embodiment 1, as shown in FIG. 4 , the present invention also provides a dual-camera calibration device 4 , including: an acquisition module 410 , a capture module 420 , a determination module 430 and an association module 440 .

获取模块410,用于获取检测事件;An acquisition module 410, configured to acquire a detection event;

捕捉模块420,用于根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,利用AI视觉检测技术在全景摄像机拍摄的视频中捕捉目标对象;The capture module 420 is used to control the tracking camera to capture the target object using AI visual detection technology according to the detection event, and use the AI visual detection technology to capture the target object in the video shot by the panoramic camera;

确定模块430,用于根据跟踪摄像机捕捉到的目标对象确定跟踪摄像机的定位关键点,根据全景摄像机的目标对象确定全景摄像机的定位关键点;Determining module 430, is used for determining the positioning key point of tracking camera according to the target object captured by tracking camera, and determining the positioning key point of panoramic camera according to the target object of panoramic camera;

关联模块440,用于关联全景摄像机的定位关键点和跟踪摄像机的定位关键点。The associating module 440 is used for associating the positioning key points of the panoramic camera with the positioning key points of the tracking camera.

在一种实施方式中,所述捕捉模块在执行控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象的过程,包括步骤:In one embodiment, the capture module is performing the process of controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event, including the steps:

获取待定位关键点信息;Obtain key point information to be located;

根据所述待定位关键点信息控制跟踪摄像机转动所述待定位关键点信息对应的拍摄初始位置;controlling the tracking camera to rotate the shooting initial position corresponding to the key point information to be located according to the key point information to be located;

启动跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象。Start the tracking camera to capture the target object using AI visual detection technology according to the detection event.

在一种实施方式中,所述捕捉模块在执行控制跟踪摄像机根据所述检测事件利用AI视觉检测技术捕捉目标对象的过程,包括步骤:In one embodiment, the capture module is performing the process of controlling the tracking camera to capture the target object using AI visual detection technology according to the detection event, including the steps:

获取预置拍摄范围;Get the preset shooting range;

控制跟踪摄像机根据所述检测事件利用AI视觉检测技术在所述预置拍摄范围捕捉目标对象。Control the tracking camera to capture the target object in the preset shooting range by using AI visual detection technology according to the detection event.

在一种实施方式中,所述确定模块根据目标对象的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标,根据目标的中心位置确定定位关键点在跟踪摄像机拍摄中的坐标。In one embodiment, the determination module determines the coordinates of the positioning key point in the tracking camera shooting according to the center position of the target object, and determines the coordinates of the positioning key point in the tracking camera shooting according to the center position of the target.

在一种实施方式中,所述所述预设检测事件是人头检测事件。In one implementation manner, the preset detection event is a head detection event.

本装置中,采用AI检测技术捕捉目标对象,根据目标对象得出两台摄像机的定位关键点坐标,用AI检测技术代替了人工标定位置,减少了繁琐的操作,大大减少了现场调试人员的工作量,并且借助于机器的稳定性,减少了因为人为原因带来的测量误差,保证定位的准确性。In this device, AI detection technology is used to capture the target object, and the key point coordinates of the two cameras are obtained according to the target object. AI detection technology is used to replace the manual calibration position, which reduces cumbersome operations and greatly reduces the work of on-site commissioning personnel. Quantity, and with the help of the stability of the machine, the measurement error caused by human factors is reduced to ensure the accuracy of positioning.

实施例四Embodiment four

与实施例二的方法相对应,如图5所示,本发明还提供一种双摄像机的定位装置,包括:获取模块510、换算模块520、控制模块530和确认模块540。Corresponding to the method in Embodiment 2, as shown in FIG. 5 , the present invention also provides a dual-camera positioning device, including: an acquisition module 510 , a conversion module 520 , a control module 530 and a confirmation module 540 .

获取模块510,用于获取全景摄像机与跟踪摄像机之间的坐标转换关系、全景摄像机中目标对象的坐标和目标对象的检测事件,其中,所述坐标转换关系中的定位关键点通过实施例三所述的双摄像机标定装置得到;The obtaining module 510 is used to obtain the coordinate transformation relationship between the panoramic camera and the tracking camera, the coordinates of the target object in the panoramic camera and the detection event of the target object, wherein the positioning key points in the coordinate transformation relationship are obtained through the third embodiment Obtained by the dual-camera calibration device described above;

换算模块520,用于根据所述坐标转换关系,将所述全景摄像机中目标对象的坐标换算成跟踪摄像机中目标对象的坐标;The conversion module 520 is configured to convert the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relationship;

控制模块530,用于根据所述跟踪摄像机中目标对象的坐标,控制跟踪摄像机转到对应的位置;A control module 530, configured to control the tracking camera to turn to a corresponding position according to the coordinates of the target object in the tracking camera;

确认模块540,用于根据所述检测事件,控制跟踪摄像机利用AI视觉检测技术捕捉目标对象,并对跟踪摄像机位置进行调整,使得目标对象在拍摄画面的预设位置上。The confirmation module 540 is configured to control the tracking camera to capture the target object using AI visual detection technology according to the detection event, and adjust the position of the tracking camera so that the target object is at a preset position in the shooting picture.

在一种实施方式中,该该控制模块530还用于按照预设的目标对象在画面中的比例对所述跟踪摄像机进行变焦。In an implementation manner, the control module 530 is further configured to zoom the tracking camera according to a preset ratio of the target object in the frame.

本装置定位过程简单,跟踪定位过程计算量少,定位准确,画面效果呈现好。The positioning process of the device is simple, the calculation amount of the tracking and positioning process is small, the positioning is accurate, and the picture effect is good.

实施例五Embodiment five

本发明实施例还提供了一种存储介质,其上存储有计算机指令,该指令被处理器执行时实现上述任一实施例的双摄像机标定方法和/或双摄像机的定位方法。An embodiment of the present invention also provides a storage medium on which computer instructions are stored, and when the instructions are executed by a processor, the dual-camera calibration method and/or the dual-camera positioning method in any of the above-mentioned embodiments is implemented.

本领域的技术人员可以理解:实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存储介质中,该程序在执行时,执行包括上述方法实施例的步骤;而前述的存储介质包括:移动存储设备、随机存取存储器(RAM,Random Access Memory)、只读存储器(ROM,Read-Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。Those skilled in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the Including the steps of the foregoing method embodiments; and the foregoing storage medium includes: a removable storage device, a random access memory (RAM, Random Access Memory), a read-only memory (ROM, Read-Only Memory), a magnetic disk or an optical disk, etc. A medium on which program code can be stored.

或者,本发明上述集成的单元如果以软件功能模块的形式实现并作为独立的产品销售或使用时,也可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机、终端、或者网络设备等)执行本发明各个实施例方法的全部或部分。而前述的存储介质包括:移动存储设备、RAM、ROM、磁碟或者光盘等各种可以存储程序代码的介质。Alternatively, if the above-mentioned integrated units of the present invention are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the embodiment of the present invention or the part that contributes to the related technology can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make A computer device (which may be a personal computer, a terminal, or a network device, etc.) executes all or part of the methods in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program codes such as removable storage devices, RAM, ROM, magnetic disks or optical disks.

与上述的计算机存储介质对应的是,在一个实施例中还提供一种计算机设备,该计算机设备包括存储器、编码器及存储在存储器上并可在编码器上运行的计算机程序,其中,编码器执行程序时实现如上述各实施例中的任意一种双摄像机标定方法和/或双摄像机的定位方法。Corresponding to the above-mentioned computer storage medium, in one embodiment, a computer device is also provided, the computer device includes a memory, an encoder, and a computer program stored in the memory and operable on the encoder, wherein the encoder When the program is executed, any one of the dual-camera calibration method and/or the dual-camera positioning method in the foregoing embodiments is implemented.

上述计算机设备,采用AI检测技术捕捉目标对象,根据目标对象得出两台摄像机的定位关键点坐标,用AI检测技术代替了人工标定位置,减少了繁琐的操作,大大减少了现场调试人员的工作量,并且借助于机器的稳定性,减少了因为人为原因带来的测量误差,保证定位的准确性。另外,该定位过程简单,跟踪定位过程计算量少,定位准确,画面效果呈现好。The above-mentioned computer equipment uses AI detection technology to capture the target object, and obtains the coordinates of the key points of the positioning of the two cameras according to the target object. AI detection technology is used to replace the manual calibration position, which reduces cumbersome operations and greatly reduces the work of on-site commissioning personnel. Quantity, and with the help of the stability of the machine, the measurement error caused by human factors is reduced to ensure the accuracy of positioning. In addition, the positioning process is simple, the calculation amount of the tracking and positioning process is small, the positioning is accurate, and the picture effect is good.

以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

显然,本发明的上述实施例仅仅是为清楚地说明本发明所作的举例,而并非是对本发明的实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (11)

1. A double-camera calibration method is characterized by comprising the following steps:
acquiring a detection event;
controlling a tracking camera to capture a target object by utilizing an AI visual detection technology according to the detection event;
determining a positioning key point of a tracking camera according to a target object captured by the tracking camera;
capturing a target object in a video shot by the panoramic camera by utilizing an AI visual detection technology according to the detection event;
determining a positioning key point of the panoramic camera according to a target object of the panoramic camera;
associating the positioning keypoints of the panoramic camera with the positioning keypoints of the tracking camera.
2. The dual-camera calibration method according to claim 1, wherein said process of controlling the tracking camera to capture the target object according to the detection event by using AI visual detection technology comprises the steps of:
acquiring key point information to be positioned;
controlling a tracking camera to rotate a shooting initial position corresponding to the key point information to be positioned according to the key point information to be positioned;
and starting a tracking camera to capture the target object by utilizing an AI visual detection technology according to the detection event.
3. The dual-camera calibration method according to claim 1, wherein said process of controlling the tracking camera to capture the target object according to the detection event by using AI visual detection technology comprises the steps of:
acquiring a preset shooting range;
and controlling a tracking camera to capture the target object in the preset shooting range by utilizing an AI visual detection technology according to the detection event.
4. The dual-camera calibration method according to claim 1, wherein in the process of determining the positioning key points of the tracking camera according to the target object captured by the tracking camera, the coordinates of the positioning key points in the shooting of the tracking camera are determined according to the center position of the target object;
and in the process of determining the positioning key points of the panoramic camera according to the target object of the panoramic camera, determining the coordinates of the positioning key points in the shooting of the tracking camera according to the central position of the target.
5. The dual camera calibration method according to any one of claims 1 to 4, wherein the preset detection event is a human head detection event.
6. A method for positioning a dual camera, comprising the steps of:
acquiring a coordinate conversion relation between a panoramic camera and a tracking camera, coordinates of a target object in the panoramic camera and a detection event of the target object, wherein a positioning key point in the coordinate conversion relation is obtained by the double-camera calibration method according to any one of claims 1 to 5;
converting the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relation;
controlling the tracking camera to rotate to a corresponding position according to the coordinates of the target object in the tracking camera;
and controlling the tracking camera to capture the target object by utilizing an AI visual detection technology according to the detection event, and adjusting the position of the tracking camera to enable the target object to be at a preset position of a shot picture.
7. The method for positioning two cameras according to claim 6, further comprising the steps of:
zooming the tracking camera according to the preset proportion of the target object in the picture.
8. A dual camera calibration apparatus, comprising:
the acquisition module is used for acquiring a detection event;
the capture module is used for controlling the tracking camera to capture a target object by utilizing an AI visual detection technology according to the detection event and capturing the target object in a video shot by the panoramic camera by utilizing the AI visual detection technology;
the determining module is used for determining the positioning key points of the tracking camera according to the target object captured by the tracking camera and determining the positioning key points of the panoramic camera according to the target object of the panoramic camera;
and the association module is used for associating the positioning key points of the panoramic camera with the positioning key points of the tracking camera.
9. A dual-camera positioning apparatus, comprising:
an obtaining module, configured to obtain a coordinate transformation relationship between the panoramic camera and the tracking camera, coordinates of a target object in the panoramic camera, and a detection event of the target object, where a positioning key point in the coordinate transformation relationship is obtained by the dual-camera calibration device according to claim 8;
the conversion module is used for converting the coordinates of the target object in the panoramic camera into the coordinates of the target object in the tracking camera according to the coordinate conversion relation;
the control module is used for controlling the tracking camera to rotate to a corresponding position according to the coordinates of the target object in the tracking camera;
and the confirming module is used for controlling the tracking camera to capture the target object by utilizing an AI visual detection technology according to the detection event and adjusting the position of the tracking camera so that the target object is at the preset position of the shot picture.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1-7 when executing the program.
11. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-7.
CN202211450967.0A 2022-11-19 2022-11-19 Dual-camera calibration method and dual-camera positioning method Pending CN115937301A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108111818A (en) * 2017-12-25 2018-06-01 北京航空航天大学 Moving target active perception method and apparatus based on multiple-camera collaboration
CN111698467A (en) * 2020-05-08 2020-09-22 北京中广上洋科技股份有限公司 Intelligent tracking method and system based on multiple cameras
CN112954188A (en) * 2019-12-10 2021-06-11 李思成 Human eye perception imitating active target snapshot method and device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108111818A (en) * 2017-12-25 2018-06-01 北京航空航天大学 Moving target active perception method and apparatus based on multiple-camera collaboration
CN112954188A (en) * 2019-12-10 2021-06-11 李思成 Human eye perception imitating active target snapshot method and device
CN111698467A (en) * 2020-05-08 2020-09-22 北京中广上洋科技股份有限公司 Intelligent tracking method and system based on multiple cameras

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