Operating image positioning and segmenting method and device
An image positioning and image technology, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problem of increased difficulty in image extraction, and achieve the effect of simple method and good robustness
Inactive Publication Date: 2018-07-13
北京尚睿通教育科技股份有限公司
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These background images will introduce noise to the analysis of test papers and homework. For example, the boundary between the homework paper and the desk is a clear straight line. In addition, the difference in different environmental lighting also increases the difficulty of image extraction.
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[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.
[0054] Such as figure 1 As shown, the present invention provides an optional job image positioning and segmentation method, including:
[0055] S1: Acquire a job image, preprocess the job image, and acquire a gradient image of the job image;
[0056] S2: Reconstructing the gradient image to obtain a reconstructed gradient image;
[0057] S3: Perform edge detection on the reconstructed gradient image to obtain edge information of the job paper image in the gradi...
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The invention relates to an operating image positioning and segmenting method and an operating image positioning and segmenting device. The operating image positioning and segmenting method includes acquiring an operating image, preprocessing the operating image while acquiring a gradient image of the operating image; reconstructing the gradient image to acquire a reconstructed gradient image; subjecting the reconstructed gradient image to edge detection to acquire edge information of operating paper image of the gradient image; according to the edge information, positioning boundary of the operating paper image; extracting the operating paper image and segmenting into different titles. In the operating image extracting process, the image can be analyzed by shooting without printing any special marks on the operating paper in advance; by the method, the operating paper image can be extracted from a complicated background image accurately, and different titles can be segmented out and the saved further; accordingly, the method is simple and practicable.
Description
technical field [0001] The invention relates to the technical field of image processing and pattern recognition, in particular to a method for locating and segmenting an operation image and a device thereof. Background technique [0002] With the rapid development of electronic information technology and the rapid popularization of mobile terminals, new auxiliary education and learning methods are constantly emerging in the field of primary and secondary school teaching. The standardized supplementary examination method has been quite popular. By printing specific answer sheets in advance, students are required to fill in the answers in the corresponding positions during the exam, and finally the automatic marking function is realized by reading the answer sheets by machines. The advantage of this method is that the processing speed is fast and accurate, which reduces the burden on teachers to judge the test papers; the disadvantage is that the equipment is relatively expens...
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IPC IPC(8): G06T7/13G06T5/00G06T7/12
CPCG06T7/12G06T7/13G06T2207/10008G06T5/70
Inventor 曹士勇
Owner 北京尚睿通教育科技股份有限公司