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Self-adaptive answer sheet sequence correction method

An answer sheet, self-adaptive technology, applied in the field of self-adaptive answer sheet sequence correction, can solve problems such as low efficiency of manual matching and inability to guarantee accuracy

Active Publication Date: 2020-11-27
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In view of this, the purpose of one or more embodiments of this specification is to propose an adaptive answer sheet sequence correction method, which can realize automatic matching of answer sheets, so as to solve the problem of low efficiency and inability to guarantee accuracy of manual matching

Method used

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  • Self-adaptive answer sheet sequence correction method

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Embodiment

[0172] The sequence of student answer sheets (A1, A2, A3, A4,...A32), (B1, B2, B3, B4,,,,,,,B32) obtained by scanning, the sequence of each processing in this embodiment The number is 32, where A represents the data on the A side of the answer sheet, B represents the data on the B side of the answer sheet, and there is a mismatch between the A and B sides in the original sequence.

[0173] Input the first pair of AB images A1 and B1 of the original answer sheet sequence into the yolov3-based model respectively, and obtain several image blocks (x1, y1, z1,.... ) and (x2,y2,z2,...). The corresponding image blocks form a data pair (x1, x2)(y1, y2)....... For each pair of data pairs (x1, x2), input it into the Siamese-based handwriting matching model In the feature extraction network Gw(), the corresponding low-dimensional feature vectors Gw(x1) and Gw(x2) are extracted, and then the Euclidean distance E between the two low-dimensional feature vectors is calculated according to t...

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Abstract

One or more embodiments of the invention provide a self-adaptive answer sheet sequence correction method. The self-adaptive answer sheet sequence correction method comprises the steps of obtaining anA-side scanning image, a B-side scanning image and an original image sequence of student answer sheets; respectively segmenting the A-side scanning image and the B-side scanning image to obtain an A-side image block and a B-side image block containing student handwriting; inputting the A-side image block and the B-side image block into a pre-trained handwriting matching model to obtain a matchingresult of an A-side scanning image and a B-side scanning image which are adjacent to each other under an original image sequence; and inputting the A-side scanning image and the B-side scanning imagewhich are not successfully matched in the matching result into a pre-trained handwriting search model, and searching the B-side scanning image matched with each A-side scanning image for each A-side scanning image, thereby realizing automatic correction of the answer sheet sequence.

Description

technical field [0001] The invention relates to the technical field of intelligent marking, in particular to an adaptive answer sheet sequence correction method. Background technique [0002] After the current intelligent marking system collects the student's answer sheets, it scans the front and back of the answer sheets through a scanner and stores them, and then sends them to the follow-up system for automatic correction. However, in the process of scanning by the scanner, there will be a phenomenon that the front and back do not match. Specifically, in the answer sheet sequence obtained after the scanner scans, there are cases where side A and side B are not from the same student. The other side of the corresponding match can only be found in the scan results of . [0003] This scanning sequence error is due to the interleaving of the timing between the image storage process and the scanning process when the scanner encounters a large number of scanning tasks, which eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/00G06K9/20G06K9/34G06N3/04G06N3/08
CPCG06N3/084G06V40/30G06V10/22G06V10/26G06N3/045G06F18/22G06F18/213G06F18/214
Inventor 傅慧源马华东田杨峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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