Image acquisition method
A technology of image acquisition and image acquisition device, which is applied in the direction of image communication, TV, color TV parts, etc. It can solve the problems of inability to achieve precision, large influence, and inability to adjust the irradiation angle of the light source, so as to achieve the effect of convenient replacement of the light source
Inactive Publication Date: 2011-02-09
SHENZHEN UNIV +2
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Problems solved by technology
The advantage of using a scanner is that it is very convenient to input the image of the printed matter into the computer, and it can reach a high resolution. The stability of the system is also very high, and it is not easy to be affected by external interference. It only includes white light source, and cannot adjust the irradiation angle and brightness of the light source, so only the image of the printed matter at a fixed angle under white light can be obtained, so it is impossible to analyze the different appearance of the printed matter under various light sources and different angles. The characteristics of the digital image are not conducive to the analysis of the image
When it is necessary to collect images of different feature points on a printed matter, it is necessary to manually move the item, which cannot achieve high accuracy
Although some cameras, lenses, etc. are equipped with control software, they are all controlled separately, which is very troublesome to operate, and this system is greatly affected by ambient light, etc.
Method used
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[0027] A kind of image collection method, with reference to accompanying drawing,
[0028] a. Clamp the captured picture 22 between two picture clamping plates 5 on the acquisition object adjustment device, and fix the acquisition object;
[0029] b The computer system is initialized, the computer displays the initial control interface, and the real-time shooting images of the camera are displayed on the control interface;
[0030] c. Input the corresponding camera shooting parameters on the computer control panel, set the camera shooting parameters through the computer system control software, and set the resolution, exposure time, contrast, white balance and other parameters according to the characteristics of the specific acquisition object;
[0031] d Input the precise distance of movement and the precise angle of rotation of the collection object on the computer control panel, control the collection object adjustment device through the computer to adjust the collection ob...
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The invention relates to an image collecting method and an image collecting device used for the method. The image collecting device comprises a computer provided with a system control software, a collecting object adjusting device and a digital camera; the image collection of the collecting points can be manually completed or automatically completed by the computer by means of inputting the screening parameter of the collecting points. The system is applied to the image field of shooting planography slice presswork (such as stamp, various bills and anti-falsification labels, etc.), and has the functions of a plurality of light sources, multiple-angle and being capable of carrying out the observation of microcosmic magnification, etc. and has the advantage of conveniently replacing the light sources and the combinations of lenses; the high definition digital image of the presswork can be screened under different light sources and angles by adopting the system, so as to provide advancedtechnical means for studying the aspects of digital image processing technology, printing technology, anti-counterfeiting technique and optical character of paper, etc.
Description
technical field [0001] The invention relates to an image collection method, in particular to a computer automatic image collection method with multiple light sources and multiple angles. Background technique [0002] At present, there are two methods for image acquisition of lithographic prints: using a scanner or a digital camera. The advantage of using a scanner is that it is very convenient to input the image of the printed matter into the computer, and it can reach a high resolution. The stability of the system is also very high, and it is not easy to be affected by external interference. It only contains white light source, and can not adjust the irradiation angle and brightness of the light source, so only the image of the printed matter at a fixed angle under white light can be obtained, so it is impossible to analyze the different appearance of the printed matter under various light sources and different angles. The characteristics of digital images are not conduciv...
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IPC IPC(8): H04N5/225H04N5/232
Inventor 刘承香阮双琛黄贵明
Owner SHENZHEN UNIV