An automatic processing and scoring method for low-quality images shot by a mobile phone
An automatic processing and image technology, applied in the direction of image data processing, image analysis, image enhancement, etc., can solve the problems of high equipment cost and inconvenience, and achieve the effect of reducing requirements and expanding applicable scenarios.
Inactive Publication Date: 2019-05-10
江苏优利信科技有限公司
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[0003] The technical problem to be solved by the present invention is to provide an automatic processing and scoring method for low-quality images taken by mobile phones in view of the above-mentioned prior art. Students can upload answer papers after taking pictures with mobile phones, and complete the division of test papers and objective questions on the server side. Scoring solves the problem that a scanner must be used for scanning in the prior art, the cost of equipment is high, and the problem is not convenient enough
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[0079] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0080] as attached figure 1 And attached figure 2 Shown, a kind of automatic processing and the scoring method of the low-quality image based on mobile phone photographing, the system that implements this method comprises mobile phone client and server end, and described method comprises the following steps:
[0081] Save blank test paper information and standard answers in the server-side database;
[0082] The low-quality image obtained by the mobile phone is uploaded to the server, and the server receives the image;
[0083] Denoise the image on the server side, correct the rotation, and restore the deformation;
[0084] Precise image segmentation of images on the server side;
[0085] Compare the identified multiple-choice answers with the standard answers in the database and automatically score;
[0086] Save the processing result t...
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The invention provides an automatic processing and scoring method for low-quality images shot by a mobile phone, and belongs to the field of computer vision. The method comprises storing blank test paper information and standard answers in a database; the answer sheet is shot and sent to the server side, and the low-quality image is denoised; carrying out rotation and distortion correction on thedenoised image; segmenting the rotated and distorted image according to questions; and comparing the recognized objective question answers with standard answers in a database to automatically score. According to the invention, after the blank volume format is specifically designed, the shot low-quality image can be automatically processed, and test paper segmentation and automatic scoring can be carried out even if the image has a large amplitude of shape and proportion change. Requirements on image acquisition equipment can be effectively reduced, and scenes applicable to automatic paper inspection are expanded.
Description
technical field [0001] The invention belongs to the technical field of computer information processing, in particular to an automatic processing and scoring method for low-quality images taken by mobile phones. Background technique [0002] In the traditional examination paper marking, the students’ answer papers or answer sheets are scanned by a scanner, and then the papers are automatically graded by the computer, and the subjective questions are manually graded, and finally the total score is calculated by the marking system and entered into the grade system. This marking method has high requirements on the image acquisition equipment, requires the collected images to be flat, and has strict requirements on the image acquisition process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an automatic processing and scoring method for low-quality images taken by mobile phones in view of the above-mentioned prior a...
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IPC IPC(8): G06T5/00G06T5/50G06T7/11G06T7/194
Inventor 顾晓庆
Owner 江苏优利信科技有限公司