CN1255687A

CN1255687A - Image processing system

Info

Publication number: CN1255687A
Application number: CN 98122713
Authority: CN
Inventors: 杨哲助
Original assignee: Mustek Systems Inc
Current assignee: Hongyou Science & Technology Co Ltd
Priority date: 1998-11-26
Filing date: 1998-11-26
Publication date: 2000-06-07
Anticipated expiration: 2018-11-26
Also published as: CN1122241C

Abstract

An image processing system is composed of scanner with transparent platform and scan module, scanner with square document, computer with a memory, a processor, a scan control program stored in memory, and an image processing program stored in memory for detecting the position gradient and angle variation of at least one corner of document image and correcting the document image to generate document image file.

Description

image processing system

本发明涉及一种图像处理系统，特别是涉及一种具有图像校正功能的图像处理系统。The invention relates to an image processing system, in particular to an image processing system with image correction function.

扫描仪已普遍地使用于各种电脑系统中，用来将文件数据转换成图像信号以输入电脑。一般扫描仪包括有一壳体，其上设有一透明平台用来放置待扫描的文件，以及一扫描模组件设于壳体内，用来扫描文件以使由文件所传来的光线转换成相对应的图像信号。扫描模组件是由许多精密的光学元件所组成，而且扫描模组件在壳体内的设置方式是经过仔细的计算，以形成精密的光学路径。然后搬运扫描仪时，常常因碰撞而造成扫描模组件轻微的位移，导致扫描后的文件图像呈现歪斜的现象。如果使用者将文件放置于平台上的位置歪斜，也会导致扫描后的文件图像呈现歪斜的现象。Scanners have been widely used in various computer systems to convert document data into image signals for input into computers. A general scanner includes a housing on which a transparent platform is provided to place the documents to be scanned, and a scanning module is arranged in the housing to scan the documents so that the light transmitted from the documents is converted into corresponding image signal. The scanning module assembly is composed of many precise optical elements, and the arrangement of the scanning module assembly in the housing is carefully calculated to form a precise optical path. Then, when the scanner is transported, the scanning module assembly is often slightly displaced due to collision, resulting in a skewed image of the scanned document. If the position where the user places the document on the platform is skewed, the scanned document image will also appear skewed.

不论是因扫描模组件位移或是文件放置歪斜所产生歪斜的文件图像，都会大大地影响扫描质量。对于这种歪斜的文件图像，使用者通常可以利用一些图像处理程序来修饰图像，将歪斜的文件图像调正为方形图像，然而这些修饰的动作十分琐碎繁杂，即使专业人员来操作也非常费时费力。Whether it is a skewed document image due to the displacement of the scanning module or the skewed document placement, it will greatly affect the scanning quality. For such skewed document images, users can usually use some image processing programs to modify the image and adjust the skewed document image into a square image. However, these modification actions are very trivial and complicated, and it is very time-consuming and laborious even for professionals. .

本发明的目的在于提供一种具有图像校正功能的图像处理系统，可以自动校正歪斜的文件图像，从而操作简单。The purpose of the present invention is to provide an image processing system with image correction function, which can automatically correct skewed document images, and thus is easy to operate.

本发明的目的是这样实现的，即提供一种图像处理系统，它包括有：一扫描仪，其包括有一扫描模组件用来扫描一方形文件并产生相对应的图像信号，该方形文件包括有四个角度为90度的边角，该图像信号内含有该文件的文件图像；以及一电脑，电连接于该扫描仪，其包括有：一存储器用来存储程序和文件；一处理器用来扫描存储于该存储器中的程序；一扫描控制程序存储于该存储器中，用来控制该扫描仪的操作以及将该扫描仪所产生的图像信号存入一主图像文件；以及一图像处理程序存储于该存储器中，用来检测该主图像文件内所存的该文件图像的位置倾斜度以及至少一边角的角度变化，并依据该文件图像的位置倾斜度以及角度变化来校正该文件图像以产生一内含有该文件的方形图像的文件图像文件。The object of the present invention is achieved by providing an image processing system, which includes: a scanner, which includes a scanning module assembly for scanning a square file and generating a corresponding image signal, the square file includes There are four corners with angles of 90 degrees, the image signal contains the file image of the file; and a computer, electrically connected to the scanner, which includes: a memory for storing programs and files; a processor for a program stored in the memory for scanning; a scan control program stored in the memory for controlling the operation of the scanner and storing image signals generated by the scanner into a main image file; and an image processing program stored in In the memory, it is used to detect the position inclination and the angle change of at least one corner of the document image stored in the main image file, and correct the document image according to the position inclination and angle change of the document image to generate a A document image file containing a square image of the document.

下面结合附图，详细说明本实用新型的实施例，其中：Below in conjunction with accompanying drawing, describe the embodiment of the utility model in detail, wherein:

图1为本发明图像处理系统的示意图；Fig. 1 is the schematic diagram of image processing system of the present invention;

图2为图1电脑的示意图；Fig. 2 is the schematic diagram of Fig. 1 computer;

图3为图2图像处理程序检测文件图像位置倾斜度的示意图；Fig. 3 is a schematic diagram of detecting the inclination of the document image position by the image processing program in Fig. 2;

图4为图2图像处理程序检测文件图像角度变化的示意图。FIG. 4 is a schematic diagram of the image processing program in FIG. 2 detecting the angle change of the document image.

请参考图1。其为本发明图像处理系统10的示意图。图像处理系统10包括有一扫描仪12用来扫描文件并产生相对应的图像信号，一电脑20电连接于扫描仪12，用来处理图像信号，以及一显示器21用来显示文件图像。扫描仪12包括有一壳体14，其上端设有一透明平台16用来放置一待扫描的文件13，一扫描模组件18以可移动的方式设于壳体14内，用来扫描文件13并产生含有文件13文件图像的图像信号，以及一按键34设于壳体14外侧，用来产生一自动处理信号。Please refer to Figure 1. It is a schematic diagram of the image processing system 10 of the present invention. The image processing system 10 includes a scanner 12 for scanning documents and generating corresponding image signals, a computer 20 electrically connected to the scanner 12 for processing image signals, and a display 21 for displaying document images. The scanner 12 includes a housing 14, the upper end of which is provided with a transparent platform 16 for placing a document 13 to be scanned, and a scanning module 18 is movably disposed in the housing 14 for scanning the document 13 and An image signal containing the document image of the document 13 is generated, and a button 34 is arranged on the outside of the housing 14 for generating an automatic processing signal.

请参考图2。其为图1电脑20的示意图。电脑20包括有一存储器22用来存储程序和文件，一处理器24用来执行存储于存储器22中的程序，一扫描控制程序26存储于存储器22中，用来控制扫描仪12的操作以及将扫描仪12所产生的图像信号存入一主图像文件28，以及一图像处理程序30存储于存储器22中，用来校正文件图像以产生一内含有校正后文件图像的文件图像文件32。Please refer to Figure 2. It is a schematic diagram of the computer 20 in FIG. 1 . The computer 20 includes a memory 22 for storing programs and files, a processor 24 for executing the programs stored in the memory 22, and a scan control program 26 stored in the memory 22 for controlling the operation of the scanner 12 and scanning The image signal generated by instrument 12 is stored in a master image file 28, and an image processing program 30 is stored in memory 22 for correcting the document image to produce a document image file 32 containing the corrected document image.

当扫描仪12所扫描的文件13为一方形文件时，即文件13四个边角的角度都为90度，使用者可以按下按键34，以产生自动处理信号。当电脑20收到自动处理信号时，扫描控制程序26会启动图像处理程序30，去校正主图像文件28内的文件图像，以产生文件图像文件32。图像处理程序30会检测主图像文件28内所存的文件图像位置倾斜度以及至少一边角的角度变化，并依据文件图像的位置倾斜度以及角度变化来校正文件图像，以产生一内含有文件13的方形图像文件图像文件32。When the document 13 scanned by the scanner 12 is a square document, that is, the angles of the four corners of the document 13 are all 90 degrees, the user can press the button 34 to generate an automatic processing signal. When the computer 20 receives the automatic processing signal, the scan control program 26 starts the image processing program 30 to correct the document image in the main image file 28 to generate the document image file 32 . The image processing program 30 will detect the position inclination of the document image stored in the main image file 28 and the angle change of at least one corner, and correct the document image according to the position inclination and angle change of the document image, so as to generate a document image containing the document 13 square image file image file 32.

请参考图3及图4。图3为图2图像处理程序30检测文件图像44位置倾斜度的示意图。图4为图2图像处理程序30检测文件图像44角度变化的示意图。图3及图4中位于文件图像44一个边角的O点为一基准点，而虚线40及42相互垂直并为校正后的方形图像的基准线。由于文件13放置歪斜，使得扫描后的文件图像44产生位置倾斜度θ1。如图3所示文件图像44的侧边45与基准线42间的夹角，即为位置倾斜度θ1。由于扫描模组件18产生位移，使得文件图像四个边角的角度产生θ2的变化，如图4所示文件图像44的侧边48与基准线40间的夹角，即为角度变化θ2，而文件图像44的左上及右下两个边角的角度为(90-θ2)度，左下及右上两个边角的角度则为(90+θ2)度。图像处理程序30会先依据检测到的位置倾斜度θ1来旋转文件图像44，以校正文件图像的位置倾斜度，而后再依据检测到的文件图像的四个边角的角度变化θ1来校正文件图像的形状，使文件图像44恢复为方形图像，并将方形图像存入文件图像文件32。Please refer to Figure 3 and Figure 4. FIG. 3 is a schematic diagram of detecting the inclination of the document image 44 by the image processing program 30 of FIG. 2 . FIG. 4 is a schematic diagram of detecting angle changes of the document image 44 by the image processing program 30 of FIG. 2 . Point O located at a corner of the document image 44 in FIGS. 3 and 4 is a reference point, and dotted lines 40 and 42 are perpendicular to each other and are reference lines of the corrected square image. Since the document 13 is placed skewed, the scanned document image 44 has a position inclination θ1. As shown in FIG. 3 , the angle between the side 45 of the document image 44 and the reference line 42 is the position inclination θ1. Due to the displacement of the scanning module 18, the angles of the four corners of the document image change by θ2. As shown in FIG. The upper left and lower right corners of the document image 44 have an angle of (90−θ2) degrees, and the lower left and upper right corners have an angle of (90+θ2) degrees. The image processing program 30 first rotates the document image 44 according to the detected position inclination θ1 to correct the position inclination of the document image, and then corrects the document image according to the detected angle change θ1 of the four corners of the document image shape, the file image 44 is restored to a square image, and the square image is stored in the file image file 32.

本发明图像处理系统10可由使用者按下扫描仪上的按键34来产生自动处理信号，使电脑的扫描控制程序26启动图像处理程序30，而图像处理程序30会检测扫描后所得的文件图像，并依据文件图像的位置倾斜度以及角度变化来校正文件图像，并将校正后的方形图像存入文件图像文件32。本发明图像处理系统10不需要使用者操作图像处理程序来进行琐碎的修饰动作，图像处理系统10便可自动将方形文件所产生歪斜的文件图像校正为方形图像，因此本发明不但提高扫描的质量，并且对使用者来说操作十分省时省力。The image processing system 10 of the present invention can generate an automatic processing signal by pressing the button 34 on the scanner by the user, so that the scanning control program 26 of the computer starts the image processing program 30, and the image processing program 30 will detect the document image obtained after scanning, The document image is corrected according to the position inclination and angle change of the document image, and the corrected square image is stored in the document image file 32 . The image processing system 10 of the present invention does not require the user to operate the image processing program to perform trivial modification actions, and the image processing system 10 can automatically correct the skewed document image generated by the square document into a square image, so the present invention not only improves the scanning quality , and the operation is very time-saving and labor-saving for the user.

以上仅说明本发明的较佳实施例，凡按本发明权利要求所做的均等变化与修饰，都应属本发明专利的涵盖范围。The above only illustrates the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the patent of the present invention.

Claims

1. image processing system is characterized in that it includes:

The one scan instrument, it includes the one scan membrane module and is used for scanning a square file and produces corresponding picture signal, and this square file includes the corner that four angles are 90 degree, and this picture signal contains the document image of this document; And

One computer is electrically connected on this scanner, and it includes:

One storer is used for stored programme and file;

One processor is used for scanning the program that is stored in this storer;

The one scan control program is stored in this storer, is used for controlling the operation of this scanner and deposits the picture signal that this scanner produced in a master image file; And

One image processing program is stored in this storer, be used for detecting the inclined position degree of this document image of being deposited in this master image file and the angle of at least one corner and change, and change according to the inclined position degree of this document image and angle and to proofread and correct this document image to produce a document image file that contains the square chart picture of this document.

2. image processing system as claimed in claim 1, it is characterized in that, this scanner includes a button in addition, be used for producing an automatic processing signals, when receiving this automatic processing signals, this scan control program can start this image processing program and remove to detect the interior document image of this master image file to produce this document image file.

3. image processing system as claimed in claim 1, it is characterized in that, this image processing program can rotate this document image to proofread and correct the inclined position degree of this document image according to detected inclined position degree earlier, then change the shape of proofreading and correct this document image according to detected angle again, make it revert to the square chart picture, and deposit it in this document image file.

4. image processing system as claimed in claim 1, it is characterized in that, this scanner includes a housing, its upper end is provided with a transparent platform, be used for placing this square file, and this Scanning mold assembly is located in this housing in a movable manner, is used for scanning the file on this transparent platform and produces corresponding picture signal.