Examination paper correction method and apparatus, electronic device, and storage medium

An examination paper correction apparatus, comprising:

• a first obtaining module, configured to obtain a first image of a standard examination paper, wherein an answering area in the standard examination paper is filled with a standard answer;
• a first marking module, configured to identify, through a pre-trained identification model, the answering area of each standard answer and characters of each standard answer in the first image, and use a first marking box to mark the answering area of each standard answer;
• a determining module, configured to determine position information of the first marking box corresponding to each answering area;
• a second obtaining module, configured to obtain a second image of an examination paper to be corrected, wherein an answering area in the examination paper to be corrected is filled with an answer to be corrected;
• a second marking module, configured to determine, according to the position information of the first marking box corresponding to each answering area of the first image, an answering area in the second image matching a position of the first marking box corresponding to the answering area, and use a second marking box to mark the determined answering area, and when determining the answering area in the second image matching the position of the first marking box corresponding to the answering area, allowing a relative position of two answering areas to be within a preset margin of error;
• an identification module, configured to identify, through the pre-trained identification model, characters of the answer to be corrected in each second marking box of the second image;
• and
• a correction module, configured to compare the characters of the standard answer in the first marking box corresponding to each answering area in the first image with the characters of the answer to be corrected in the second marking box corresponding to the corresponding answering area in the second image to complete correction of the examination paper to be corrected,
• wherein the determining module determining the position information of the first marking box corresponding to each answering area comprises:
• establishing a first two-dimensional coordinate system for the first image, and determining position information of the first marking box corresponding to each answering area in the first two-dimensional coordinate system;
• and
• the second marking box determining, according to the position information of the first marking box corresponding to each answering area of the first image, the answering area in the second image matching the position of the first marking box corresponding to the answering area in the second image comprising:
• establishing a second two-dimensional coordinate system for the second image, and determining, according to the first marking box corresponding to each answering area of the first image, the answering area in the second image and whose position information in the second two-dimensional coordinate system matches the position information of the first marking box corresponding to the answering area in the first two-dimensional coordinate system, wherein
• a corresponding relationship between the second two-dimensional coordinate system and the examination paper to be corrected is the same as a corresponding relationship between the first two-dimensional coordinate system and the standard examination paper.