TWI576648B - Image capturing device and method - Google Patents

Description

Image capturing device and method

The present invention relates to an image capturing device, and more particularly to an image capturing device and method for full-area fast focusing.

With the development of technology, digital cameras or a variety of smart devices equipped with camera lenses, such as tablet computers, personal digital assistants, smart phones, etc., have become indispensable tools for modern people.

When shooting with the camera, it is generally necessary to perform a focusing operation to adjust the distance between the lens and the photosensitive element so that the subject can be clearly imaged. In order to facilitate the user to easily and quickly capture clear images, most of the current cameras have auto-focusing functions, which can actively analyze the images that the user wants to capture and adjust the focus position of the lens.

At present, the technology has developed the use of laser light to assist the focus of the camera. The main principle is to emit a laser beam from the camera and receive the laser beam reflected from the object to obtain the camera and the object according to the time of the laser beam returning. The distance between them moves the lens to the appropriate focus position for taking a picture.

However, the general camera lens has a viewing angle of about 70 degrees or more, but the viewing angle of the laser light is only about 25 degrees, which will make the laser focusing area only cover a part of the camera shooting range (ie, the center area). For example, FIG. 1 is a schematic diagram of a laser sensing range of a conventional camera's laser focusing module. Referring to FIG. 1, the laser sensing range 100 of the conventional camera laser focusing module can only cover the central area of the screen 10. If the user wants to focus on an area other than the laser sensing range 100, the focus will fail.

In addition, there are three common types of focus, including single focus, continuous focus, and touch point focus. Both single-focus and continuous focus find the focus with the object distance of the fixed area in the picture. Although the touch point focus can be focused according to the user's touch position, if the touch position exceeds the effective area of the laser beam sensing, an invalid response will be obtained, and the conventional passive focus is needed to support the calculation of the clearest point. Or select a phase detection sensor to reduce the focus time. In addition, even if the object is within the laser sensing range 100, as shown in the screen 10 of FIG. 1, the character 12 is deep in the foreground and the mountain 14 is far in the depth, and in the case of the screen 10 having the front, middle, and rear depth of field The camera also cannot determine which object to focus on.

In view of the above, the present invention provides an image capturing device and method, which can quickly focus to shoot by configuring a plurality of laser focusing modules and adjusting the laser sensing range to cover the shooting range of the lens. Any object within the scope.

Embodiments of the present invention provide an image capturing device. The image capturing device includes a lens, a plurality of laser focusing modules, and a processor. The lens has a shooting range. Each of the laser focus modules has a laser sensing range, and these laser sensing ranges are adjacent to each other and cover the shooting range. These laser focus modules detect depth information of at least one object within the above range of laser sensing. The processor is coupled to the lens and the plurality of laser focusing modules. The processor determines the focus distance according to the depth information of each object detected by the above-mentioned laser focus module to push the lens to capture the image of the object.

Embodiments of the present invention provide an image capturing method, which is suitable for an image capturing device having a lens and a plurality of laser focusing modules. Each of the laser focus modules has a laser sensing range, and the laser sensing ranges are adjacent to each other and cover the shooting range of the lens. This method first uses these laser focus modules to detect depth information of at least one object within its laser sensing range. Next, based on the depth information of each object detected by the laser focusing modules, the focusing distance is determined to push the image of the object to be photographed by the lens.

Embodiments of the present invention provide an image capturing device. The image capture device includes a lens, a laser focus module, an optical lens, and a processor. The lens has a shooting range. The laser focus module has a laser sensing range and detects depth information of at least one object within the laser sensing range. The optical lens is arranged in front of the laser focusing module to expand the laser sensing range of the laser focusing module to cover the shooting range of the lens. The processor is coupled to the lens and the laser focus module. The processor determines the focus distance according to the depth information of each object detected by the laser focus module to push the lens to capture the image of the object.

Embodiments of the present invention provide an image capturing method, which is suitable for an image capturing device having a lens, an optical lens, and a laser focusing module. The laser focus module has a laser sensing range, and the optical lens expands the laser sensing range of the laser focus module to cover the shooting range of the lens. The method first uses a laser focus module to detect depth information of at least one object within the laser sensing range. Next, according to the depth information of each object detected by the laser focus module, the focus distance is determined to push the image of the object of the lens.

Based on the above, the image capturing device and method of the embodiment of the present invention configures a plurality of laser focusing modules in the image capturing device, and connects the laser sensing ranges of the laser focusing modules to a larger one. The laser sensing range allows it to cover the shooting range of the lens of the image capture device. In addition, the present invention also arranges the optical lens in front of the laser focusing module to expand the laser sensing range of the laser focusing module to cover the shooting range of the lens of the image capturing device. Accordingly, the image capturing device can detect the depth information of each object in the shooting range of the lens, not only realizes the laser fast focusing in the whole region, but also solves the problem that the single-point touch focusing cannot support the non-sensing area, and It is used for functions such as dynamic focus tracking or post-depth processing.

The above described features and advantages of the invention will be apparent from the following description.

The invention utilizes a combination of a plurality of laser focusing modules or an optical lens disposed in front of the laser focusing module, so that the laser sensing range of the laser focusing module can cover the shooting range of the lens of the image capturing device. Thereby, the image capturing device can quickly focus on any object in the shooting range according to the object depth information detected by the laser focusing module, and can find the main object in multiple objects to promote the lens focusing. For the object, to get a clear image of the object.

2 is a block diagram of an image capture device according to an embodiment of the invention. Figure 2 first introduces all the components and configuration relationships of the image capture device. The detailed functions will be disclosed together with the following diagrams.

Referring to FIG. 2, the image capturing device 20 of the present embodiment includes a lens 22 and a plurality of laser focusing modules (this embodiment uses the laser focusing modules 24_1~24_n as an example, but is not limited thereto) and The processor 26 is coupled to the lens 22 and the laser focusing modules 24_1~24_n. In this embodiment, the image capturing device 20 is, for example, a digital camera, a monocular camera, a digital camera, or other smart phone, tablet computer, personal digital assistant, tablet computer, etc. with a video capture function, a head mounted display device, and the like. The invention is not limited thereto.

The lens 22 has a shooting range that includes a photosensitive element for sensing the intensity of light entering the lens 22 to produce an image. The photosensitive element is, for example, a Charge Coupled Device (CCD), a Complementary Metal-Oxide Semiconductor (CMOS) element, or other components.

In the embodiment of the present invention, the implementations of the laser focusing modules 24_1~24_n are all similar. Therefore, the characteristics of the laser focusing module 24_1 will be described below as an example. 3 is a block diagram of a laser focusing module according to an embodiment of the present invention, but FIG. 3 is for convenience of description and is not intended to limit the present invention. The laser focusing module 24_1 includes a transmitter 242, a sensor 244, and a controller 246, wherein the controller 246 is coupled to the transmitter 242 and the sensor 244. In this embodiment, the emitter 242 and the sensor 244 of the laser focus module 24_1 are, for example, reflective laser sensors respectively disposed in the left and right direction, the transmitter 242 is used to emit the laser beam, and the sensor 244 is used. The laser beam reflected by the object is detected, but the invention is not limited thereto. The controller 246 can be, for example, a microprocessor integrated circuit (IC), but the invention is not limited thereto.

It is worth noting that the laser focusing modules 24_1~24_n respectively have a laser sensing range, and each of the laser sensing ranges are adjacent to each other, so that the laser sensing range of the laser focusing modules 24_1~24_n can cover the entire lens 22. Shooting range. For example, FIG. 4 is a schematic diagram of a field of view coverage state of a plurality of laser focus modules according to an embodiment of the invention. Referring to FIG. 2 and FIG. 4 simultaneously, the laser focusing modules 24_1, 24_2, 24_3, and 24_4 respectively have laser sensing ranges R1, R2, R3, and R4, wherein the laser sensing ranges R1, R2, R3, and R4 cover the lens 22 The shooting range is 40.

It should be noted that the embodiment of the present invention does not limit the placement manner of the laser focusing modules 24_1, 24_2, 24_3, and 24_4 in FIG. 4, as long as the laser focusing modules 24_1, 24_2, 24_3, and 24_4 are The laser sensing range can cover the shooting range 40 of the lens 22. In this way, the image capturing device 20 can detect the objects in the shooting range 40 of the lens 22 through the laser focusing modules 24_1, 24_2, 24_3, and 24_4.

The processor 26 can be, for example, a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (DSP), Programmable controllers, Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or other similar devices or combinations of these devices. The processor 26 is configured to determine the focus distance according to the depth information of the object to push the lens 22 to capture an image.

FIG. 5 is a flowchart of an image capturing method according to an embodiment of the invention. Referring to FIG. 2 and FIG. 5 simultaneously, the image capturing method of the present embodiment is applied to the image capturing device 20 of FIG. 2, and the detailed steps of the image capturing method are described below.

First, in step S510, the image capturing device 20 detects the depth information of at least one object in the laser sensing range by using the laser focusing modules 24_1~24_n. The image capturing device 20, for example, uses the laser focusing modules 24_1~24_n to emit a laser beam to a corresponding laser sensing range, and detects a laser beam reflected by each object in the laser sensing range. Since the image capturing device 20 includes a plurality of laser focusing modules 24_1~24_n corresponding to different laser sensing ranges, and the laser sensing ranges are adjacent to each other, the lightning of the combined laser focusing modules 24_1~24_n The range of the shot sensing range can cover the shooting range of the lens 22 of the image capturing device 20, thereby detecting all objects within the shooting range of the lens 22. After detecting the laser beam reflected by each object, the laser focusing modules 24_1~24_n can calculate the laser sensing range according to the time taken by the respective laser beam to be reciprocated and the speed of the laser beam transmission. The distance between each object and the lens 22, thereby obtaining depth information of each object.

Next, in step S520, the processor 26 of the image capturing device 20 determines the focusing distance according to the depth information of each object detected by the laser focusing modules 24_1~24_n to push the image of the object captured by the lens 22.

Since the image capturing device 20 is assisted by the plurality of laser focusing modules 24_1~24_n, all the objects in the shooting range of the lens 22 can be detected and the depth information of each object can be obtained, so that the focusing area of the image capturing device 20 is no longer Limited to the middle or fixed area, it can be expanded to the entire shooting range of the lens 22. The processor 26 of the image capturing device 20 can select an object from the objects detected by the respective laser focusing modules 24_1~24_n in different laser sensing ranges, and determine the lens according to the depth information of the object. The distance to be moved by 22 to push the lens 22 to capture an image focused on the object.

After the image capturing device 20 obtains the depth information of all the objects in the image taken by the lens 22, the processor 26 of the image capturing device 20 can also select any object in the image taken by the lens 22 with different algorithms or determination conditions. The main object, and using the depth information of the main object as the focusing distance, pushes the lens 22 to capture an image focused on the main object.

In detail, in an embodiment of the present invention, the image capturing device 20 is located at The processor 26 can perform a face tracking algorithm to detect a subject object in the captured image. The processor 26 uses the depth information of the main object as the focusing distance, and pushes the lens to capture an image focused on the main object.

For example, when the image capturing device 20 wants to select the portrait of the lens 22 as the main object, the processor 26 of the image capturing device 20 can detect the position of the main object with the face tracking algorithm. In an embodiment of the present invention, the face tracking algorithm may, for example, analyze whether the color coordinates of the color of the subject object fall within the skin color block, and analyze the shape of the body object (eg, the face shape), but the invention is not limited thereto. this. When the image capturing device detects the position of the portrait through the face tracking algorithm and detects the depth information of the portrait through the laser focusing module 24_1~24_n, the depth information of the portrait can be used as the focusing distance. The lens captures an image that focuses on the portrait.

In another embodiment of the present invention, the processor 26 of the image capturing device 20 can select a body object from the objects according to the brightness range of the plurality of pixels of each object in the image. The processor 26 uses the depth information of the main object as the focusing distance, and pushes the lens to capture an image focused on the main object.

For example, FIG. 6 is a schematic diagram showing a picture taken by an image capturing device according to an embodiment of the present invention, and FIGS. 7A-7D respectively illustrate pixel brightness of the sky, lake, boat, tree, and the like in FIG. Histogram. Referring to FIG. 6 and FIG. 7A to FIG. 7D simultaneously, the image capturing device can compare the ratio of the brightness range of each object in FIGS. 7A to 7D, and select an object having a large exposure range as the main object. In this embodiment, the brightness of the lake surface is relatively large (as shown in FIG. 7B), so the image capturing device selects the lake surface as the main object, and detects the depth information of the lake surface through the laser focusing modules 24_1~24_n. Among them, since the lake surface in Fig. 7 extends toward the infinity position, the image capturing device will push the lens to the farthest focusing distance to capture the image focused on the lake surface.

In still another embodiment of the present invention, the processor 26 of the image capturing device 20 can select a main object from the object according to the depth information of each object in the image. The processor 26 and the depth information of the body object are used as the focusing distance, and the lens is pushed to capture an image focused on the subject object. The processor 26 determines the distance of the object according to the time taken by the laser beam to and from the object, and selects the object that takes less time to travel the laser beam (ie, the object closer to the lens 22) as the main body. object.

For example, FIG. 8 is a schematic diagram showing an image capturing device to take a picture according to another embodiment of the present invention. Referring to FIG. 8, when the image capturing device detects that the time taken for the laser beam to and from the "pot 81" is shorter than the time taken for the laser beam to go back to the "rear table 82", the "pot 81" can be determined. Compared with the "rear table 82", the distance is closer to the lens. Therefore, "pot 81" is selected as the main object, and the depth information of the flower pot 81 is calculated according to the laser focusing module, and the depth information of the flower pot 81 is taken as Focusing distance, the lens is pushed to capture an image focused on the flower pot 81.

In short, the image capturing device of the embodiment of the invention adopts multiple laser focusing modules and configures the laser sensing ranges of the respective laser focusing modules to be adjacent to each other, so that the lasers of the laser focusing modules are The sensing range covers the shooting range of the lens and detects the depth information of any object within the lens's shooting range. The image capturing device can further match different algorithms or judgment conditions, select a main object among a plurality of objects in the shooting range, and use the depth information of the main object as the focusing distance, and push the lens to focus on the subject. The image of the object. In this way, the image capturing device using the laser focusing module not only realizes the full-area laser fast focusing, but also solves the problem that the single-point touch focusing cannot support the non-sensing area in the prior art.

In other embodiments, the image capturing device of the embodiment of the present invention can continue to perform functions such as dynamic tracking or depth of field processing after selecting a main object and capturing an image, but the image capturing device of the embodiment of the present invention There are no restrictions on this feature.

In an embodiment of the present invention, since the focus area of the image capturing device is no longer limited to a fixed area in the shooting screen (ie, center or single point focusing), if the subject object is moving, the image is 撷The taking device can dynamically adjust the focus area according to the position of the main object to perform the function of dynamic tracking.

For example, FIG. 9 is a flow chart showing the image capturing device performing dynamic focus tracking according to an embodiment of the invention. Referring to FIG. 2 and FIG. 9, the present embodiment is continued, for example, after step S520 of FIG. In step S910, the image capturing device 20 detects whether the main object moves by the laser focusing modules 24_1~24_n. In the embodiment of the present invention, the image capturing device 20 can detect that the main object moves toward the upper, lower, left and right directions relative to the image capturing device 20, and can also detect that the main object is facing the image capturing device 20 The direction is close to or away from, but the invention is not limited thereto. In other words, the image capturing device 20 of the embodiment of the present invention can directly detect the main object by the laser focusing of the entire area of the laser focusing module 24_1~24_n according to the change of the position and depth information of the main object. mobile.

When the moving of the main object is detected, in step S920, the image capturing device 20 re-focuses the depth information of the main object detected by the laser focusing modules 24_1~24_n as the focusing distance, and pushes the lens 22 to focus. An image of the subject object. For example, FIGS. 10A-10D are schematic diagrams showing dynamic tracking of an object object by an image capturing device according to an embodiment of the invention. Referring to FIGS. 10A-10D, the image capturing device is a butterfly object 1001 as a main object, and it is detected that the butterfly 1001 is moving in the woods. At this time, the image capturing device can detect the depth information of the butterfly 1001 after moving through the full-area laser focusing. By repeating the above actions, the image capturing device can continuously push the lens according to the detected depth information to focus on the butterfly 1101 to capture the clearest image (as shown in FIGS. 10A-10D).

In another embodiment of the present invention, the image capturing device can perform the post-depth processing function according to the plurality of images respectively focusing on different objects, so that the scenes in all the captured images are clearly visible to generate the panoramic deep image.

For example, FIG. 11 is a flow chart showing the post-depth processing of the image capturing device according to an embodiment of the invention. Referring to FIG. 2 and FIG. 11 simultaneously, in step S1110, the image capturing device 20 detects the depth information of at least one object in the laser sensing range by using the laser focusing modules 24_1~24_n. In step S1120, the processor 26 of the image capturing device 20 uses the depth information of each object as the focusing distance, and pushes the lens 22 to capture an image focused on each object. In step S1130, the processor 26 of the image capturing device 20 synthesizes the clear images of the objects in the images into a panoramic deep image with clear objects.

The operation flow of the above step S1110 is the same as or similar to that of step S510 in FIG. 5, and therefore will not be described herein. Different from the foregoing embodiment, after the processor 22 of the image capturing device 20 of the present embodiment captures the image focused on each object, the processor 26 can capture the portion of the clear image in each image and use image synthesis technology. These sharp images are combined to achieve a panoramic deep image.

It is worth mentioning that, since the focus area of the image capturing device 20 is no longer limited to a fixed area in the shooting picture (ie, intermediate or single-point focusing), the processing unit 26 of the image capturing device 20 can be based on a plurality of objects. Position the focus area separately so that each image can be accurately focused on the sharpest position of the object. In this way, in the panoramic mode shooting, the image capturing device 20 can ensure that the objects in the image to be captured are clearly visible through the full-field laser fast focusing, and the image can be saved through accurate focusing. The number of sheets shortens the time it takes to obtain panoramic deep images.

In short, the image capturing device of the embodiment of the present invention detects the depth information of a plurality of objects in the shooting range of the lens through a plurality of laser focusing modules, and not only selects one main object from the plurality of objects, but also performs dynamics. The function of chasing focus can also be combined with the image focused on multiple objects to be combined into a panoramic deep image. Accordingly, the image capturing device of the embodiment of the present invention can shorten the processing time of performing the post-depth processing function when capturing the panoramic deep image.

In addition to the above-described manner in which a plurality of laser focusing modules are disposed in the image capturing device such that the laser sensing range of the image capturing device can cover the shooting range of the lens, the present invention also provides a direct use of the optical lens to expand The laser sensing range of the laser focusing module allows the expanded laser sensing range to cover the shooting range of the lens.

In detail, FIG. 12 is a block diagram of an image capture device according to another embodiment of the present invention. Referring to FIG. 12, the image capturing device 120 includes a lens 122, a laser focusing module 124, a processor 126 and an optical lens 128. The processor 126 is coupled to the lens 122 and the laser focusing module 124, and the optical lens 128 is configured. In front of the laser focusing module 124. In this embodiment, the function and operation flow of the lens 122, the laser focusing module 124, and the processor 126 shown in FIG. 12 are the same as those in FIG. 2, and details are not described herein again.

The difference between the embodiment and the embodiment of FIG. 2 is that the image capturing device 120 of the embodiment is additionally provided with an optical lens 128, and the optical lens 128 is disposed in front of the laser focusing module 124, and can expand the lightning. The laser sensing range of the focusing module 124 is shot and covers the shooting range of the lens 122.

For example, FIG. 13A is a schematic diagram showing a field of view coverage of a laser focus module according to an embodiment of the invention, and FIG. 13B is a view showing a laser focus configured with an optical lens according to an embodiment of the invention. Schematic diagram of the field of view coverage of the module.

Referring to FIG. 13A first, the laser focusing lens 124 is not configured with the optical lens 128. Therefore, the laser sensing range R11 of the laser beam 131 can only cover the intermediate portion of the shooting range 130. Next, referring to FIG. 13B, the optical lens 128 is additionally disposed in front of the laser focusing module 124. At this time, the laser sensing range R11' of the laser beam 131 may cover the shooting range 130 of the lens 122. In this way, the image capturing device 130 can use the laser focusing module 124 to detect the depth information of each object in the shooting range 130 of the lens 122, thereby solving the problem that the laser focusing module 124 can be too small.

In short, the image capturing device of the embodiment of the present invention can cover the lens of the image capturing device by arranging the optical lens in front of the laser focusing module to expand the laser sensing range of the laser focusing module. The shooting range. Accordingly, the image capturing device using only a single laser focusing module can also detect the depth information of each object in the shooting range of the lens, and can select the main object from the shooting range by using various methods in the foregoing embodiments. The depth information is used as the focusing distance to push the lens and shoot the image focused on the subject. In this way, the image capturing device of the embodiment can also achieve full-area laser fast focusing, and also solves the problem that the single-point touch focusing cannot support the non-sensing area in the prior art.

In summary, the image capturing device and method provided by the embodiments of the present invention configure a plurality of laser focusing modules in the image capturing device, and configure the laser sensing range of the laser focusing modules. Adjacent to each other, or only one laser focusing module, and optical lenses in front of them. Accordingly, the laser sensing range of the laser focusing module can cover the shooting range of the image capturing device lens, thereby detecting the depth information of each object in the shooting range. In this way, the image capturing device of the embodiment of the invention not only realizes the full-area laser fast focusing, but also solves the problem that the single-point touch focusing cannot support the non-sensitive area in the prior art. In addition, the image capturing device of the embodiment of the invention not only ensures that the objects in the captured image are clearly visible, but also improves the convenience of dynamic focus tracking and shortens the panoramic deep image. Processing time.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10: Screen 12: Figure 14: Mountain 100, R1, R2, R3, R4, R11, R11': Laser sensing range 120, 20: Image capturing device 122, 22: Lens 124, 24_1, 24_2, 24_3, 24_4 ,... 24_n: laser focus module 126, 26: processor 128: optical lens 130, 40: shooting range 131: laser beam 1001: butterfly 242: transmitter 244: sensor 246: controller 81: flower Basin 82: rear table S510, S520, S910, S920, S1110, S1120, S1130: steps

Figure 1 is a schematic diagram of the laser sensing range of a conventional camera's laser focusing module. 2 is a block diagram of an image capture device according to an embodiment of the invention.

3 is a block diagram of a laser focus module according to an embodiment of the invention.

4 is a schematic diagram of a field of view coverage state of a plurality of laser focus modules according to an embodiment of the invention.

FIG. 5 is a flowchart of an image capturing method according to an embodiment of the invention.

FIG. 6 is a schematic diagram showing a picture taken by an image capturing device according to an embodiment of the invention.

7A-7D respectively show histograms of the pixel brightness of the sky, lake, boat, tree, and the like in FIG. 6.

FIG. 8 is a schematic diagram showing an image capturing device to take a picture according to another embodiment of the present invention.

FIG. 9 is a flow chart showing the image capturing device performing dynamic focus tracking according to an embodiment of the invention.

10A-10D are schematic diagrams showing dynamic tracking of an object object by an image capturing device according to an embodiment of the invention.

FIG. 11 is a flow chart showing the post-depth processing of the image capturing device according to an embodiment of the invention.

FIG. 12 is a block diagram of an image capture device according to another embodiment of the present invention.

FIG. 13A is a schematic diagram of a field of view coverage state of a laser focus module according to an embodiment of the invention.

FIG. 13B is a schematic diagram showing a field of view coverage state of a laser focus module equipped with an optical lens according to an embodiment of the invention.

20: Image capture device 22: Lens 24_1, 24_2, ..., 24_n: Laser focus module 26: Processor

Claims (16)

An image capturing device includes: a lens having a shooting range; a plurality of laser focusing modules, each of the laser focusing modules having a laser sensing range, the laser sensing ranges being adjacent to each other and covering The shooting range detects a depth information of at least one object in the range of the laser sensing; and a processor coupled to the lens and the laser focusing module, according to the laser focusing module The depth information of each of the objects determines a focus distance to push the lens to capture an image of the object. The image capturing device of claim 1, wherein each of the laser focusing modules comprises: a transmitter that emits a laser beam to a corresponding laser sensing range; a sensor, detecting Measuring the laser beam reflected by each of the objects in the range of the laser sensing; and a controller for calculating the depth information of each of the objects in the range of the laser sensing according to the time taken for the laser beam to go back and forth . The image capturing device of claim 1, wherein the processor comprises: performing a face tracking algorithm to detect a subject object in the captured image, and using the depth information of the subject object For the focus distance, the lens is pushed to capture the image focused on the subject object. The image capturing device of claim 1, wherein the processor comprises: selecting a body object from the object according to a brightness range of the plurality of pixels of each object in the image, and using the body The depth information of the object acts as the focus distance, and the lens is pushed to capture the image focused on the subject object. The image capturing device of claim 1, wherein the processor comprises: selecting a body object from the object according to the depth information of each object in the image, and using the body object The depth information is used as the focus distance, and the lens is pushed to capture the image focused on the subject object. The image capturing device of claim 5, wherein the processor further detects whether the object is moving, and when detecting the movement of the object, re-detecting by the laser focusing module The depth information of the subject object is measured as the focus distance, and the lens is pushed to capture the image focused on the subject object. The image capturing device of claim 1, wherein the processor further uses the depth information of each of the objects as the focusing distance, and pushes the lens to capture the image focused on each of the objects, and A sharp image of each of the objects in the image is synthesized to produce a panoramic deep image. An image capturing method is suitable for an image capturing device having a lens and a plurality of laser focusing modules, wherein each of the laser focusing modules has a laser sensing range, and the laser sensing ranges are mutually Adjacent to and covering a shooting range of the lens, the method includes the following steps: detecting, by the laser focusing module, a depth information of at least one object in the laser sensing range; and according to the laser focusing module The depth information of each of the detected objects determines a focus distance to push the lens to capture an image of the object. The image capturing method of claim 8, wherein the step of detecting the depth information of the object in the laser sensing range by using the laser focusing module comprises: using each of the lasers The focusing module emits a laser beam to the corresponding laser sensing range, and detects the laser beam reflected by each of the objects in the laser sensing range; and according to the time taken for the laser beam to travel back and forth, Calculating the depth information of each of the objects in the range of the laser sensing. The image capture method of claim 8, wherein the focus distance is determined according to the depth information of each object detected by the laser focus module to push the lens to capture the object After the step of the image, the method further includes: performing a face tracking algorithm to detect a subject object in the captured image; and using the depth information of the subject object as the focusing distance, pushing the The lens captures the image that is focused on the subject object. The image capture method of claim 8, wherein the focus distance is determined according to the depth information of each object detected by the laser focus module to push the lens to capture the object After the step of the image, the method further comprises: selecting a body object from the object according to a brightness range of the plurality of pixels of each object in the image; and using the depth information of the body object as The focus distance pushes the lens to capture the image focused on the subject object. The image capture method of claim 8, wherein the focus distance is determined according to the depth information of each object detected by the laser focus module to push the lens to capture the object After the step of the image, the method further comprises: selecting a body object from the object according to the depth information of each object in the image; and using the depth information of the body object as the focusing distance The lens is pushed to capture the image focused on the subject object. The image capturing method of claim 12, wherein after the step of pushing the lens to capture the image focused on the subject object by using the depth information of the subject object as the focusing distance The method further includes: detecting whether the object is moving; and detecting the depth information of the object detected by the laser focusing module as the focusing distance when detecting the movement of the object The lens captures the image that is focused on the subject object. The image capturing method of claim 8, wherein after the step of detecting the depth information of the object in the laser sensing range by using the laser focusing module, the method is further The method includes: using the depth information of each of the objects as the focus distance, pushing the lens to capture the image focused on each of the objects; and synthesizing the clear image of each object in the image to generate a panoramic deep image . An image capturing device includes: a lens having a shooting range; a laser focusing module having a laser sensing range for detecting a depth information of at least one object in the laser sensing range; an optical lens, Configuring the laser focusing module in front of the laser focusing module to expand the laser sensing range of the laser focusing module to cover the shooting range of the lens; and a processor coupled to the lens and the laser focusing module, according to the The depth information of each of the objects detected by the laser focusing module determines a focusing distance to push the lens to capture an image of the object. An image capturing method is suitable for an image capturing device having a lens, an optical lens and a laser focusing module, wherein the laser focusing module has a laser sensing range, and the optical lens enlarges the image The laser sensing range of the laser focusing module covers a shooting range of the lens, the method comprising the steps of: detecting, by the laser focusing module, a depth of at least one object in the laser sensing range And determining, according to the depth information of each of the objects detected by the laser focusing module, a focus distance to push the lens to capture an image of the object.