A method for automatic marking of test papers

Abstract

The present invention relates to a method for automatically marking test papers, comprising the following steps: S1. Acquiring images of test papers, extracting and identifying question markers, option markers, answer markers and image cutting markers on the images, and identifying identified question marks Points are sorted, and the answer mark points are the answer boxes filled by candidates; S2. Sort the question mark points and the option mark points associated with the question mark points, and calculate the distance between the answer mark points associated with the question mark points and each associated option mark point. The distance between them, the option mark point with the smallest distance and conforming to the design ratio is recorded as the examinee’s answer, the sorting sequence number of the option mark point is compared with the standard answer, and whether the candidate’s answer is judged according to the comparison result is correct; S3. After identifying the image cutting mark point , cut the image and grade the subjective questions according to the cut image. The invention proposes a method in which all the test questions are answered on the test paper, the objective questions are automatically graded, and the subjective questions are automatically cut.

Description

technical field [0001] The invention relates to the field of automated examinations, in particular to an automatic examination paper marking method. Background technique [0002] The current automatic identification technology for test papers is mainly for automatic identification of answer sheets. Although this method saves the time of marking and improves the accuracy of marking, it also has certain problems: waste of paper, and because candidates need to paint on the answer sheets , so it takes extra time, and it is easy for candidates to paint the answer in the wrong place. [0003] In recent years, when grading subjective questions in large-scale exams, the images of subjective question answer sheets are mainly used for multi-person online grading. This method can reduce grading errors and shorten grading time, but there are also the above problems in practical applications. Since the marking teacher can only see the answers in the limited area of ​​the answer sheet, t...

AI Technical Summary

Problems solved by technology

[0002] The current automatic identification technology for test papers is mainly for automatic identification of answer sheets. Although this method saves the time of marking and improves the accuracy of marking, it also has certain problems: waste of paper, and because candidates need to paint on the answer sheets , so it takes extra time, and it is easy for the candidate to paint the answer in the wrong place

[0003] In recent years, when grading subjective questions in large-scale exams, the images of subjective question answer sheets are mainly used for multi-person online grading. This method can reduce grading errors and shorten grading time, but there are also the above problems in practical applications. Since the marking teacher can only see the answers in the limited area of ​​the answer sheet, the marking teacher cannot see the complete answer when the candidate fills in the wrong place of the answer or answers out of the limited area

[0004] At this stage, there are relatively few studies on automatic marking methods for non-answer sheets. The existing technology mainly realizes the recognition of the answers to the objective question area through the recognition of handwritten numbers or letters to perform automatic marking. The accuracy of letter recognition is affected, and this technology is difficult to apply to large-scale exams

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