An answer sheet scoring and marking system based on image mode

Abstract

The invention discloses an answer sheet scoring and marking system based on an image mode, comprising an image acquisition module, a two-dimensional code detection module, a two-dimensional code identification module and a positioning point determination module, wherein the positioning points comprises a first positioning point and a second positioning point; a position judging module, a unified dividing module used for uniformly dividing the multiple-choice questions, filling in the blanks and solving the questions on the answer sheet. The answer sheet scoring and marking system based on image mode of the invention can dynamically increase according to user input, using the strategy of automatic generation of anchor points for each question, combined with image recognition to solve the problem of test paper printing distortion and black point missing caused by marking failure, by improving the accuracy of recognition to control error, recognition rate rapid declination due to printingdistortion, black point printing incompleteness can be avoided , can serve the needs of large and medium-sized examinations in schools well.

Description

technical field [0001] The invention relates to the technical field of marking algorithm image recognition, and more specifically, to an image mode-based answer sheet scoring and marking system. Background technique [0002] At present, there are many styles of the unified scoring system based on the template test paper, but the popular main idea is to set four black corner points on the four edges (such as figure 1 shown), and then normalized to the same space for comparison, and then count the features on the test paper, and finally obtain effective information and count the test paper scores, limited by the current shortage of handwriting recognition technology and language analysis technology, currently on the market The objective questions are graded automatically, and the subjective questions are graded through the Internet. Just as the Chinese patent application number 201510400317.9 discloses an image-based answer sheet scoring and marking system, it is based on the...

AI Technical Summary

Problems solved by technology

However, the above method has high requirements for the accuracy and accuracy of the detection. For example, the traditional positioning point search is used to identify the answer sheet using the contour search and screening method. In the case of incomplete dot printing, the recognition rate will drop sharply, and a slight deviation will lead to error problems in the marking, which needs to be solved manually, which will not only reduce the efficiency of marking and scoring, but also waste manpower and material resources

[0003] Therefore, it is necessary to provide a scoring and grading system for answer papers that can dynamically increase according to user input, using automatic generation of an answer sheet with an anchor point strategy for each question, and combining image recognition to solve the failure of marking papers caused by printing deformation and missing black corner points problem, the image mode-based answer sheet scoring and marking system that controls the error by improving the recognition accuracy has become a technical problem to be solved urgently by those skilled in the art

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