An intelligent identification and analysis method for an examination answer sheet system

A technology of intelligent recognition and analysis methods, applied in image analysis, character and pattern recognition, image data processing and other directions, can solve problems such as image instability, and achieve intelligent high-speed recognition, high efficiency, and high image accuracy.

Inactive Publication Date: 2019-05-03
江苏博墨教育科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect of image instability in the answer card recognition in the prior art, and provide an intelligent identification and analysis method for the test answer card system

Method used

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  • An intelligent identification and analysis method for an examination answer sheet system
  • An intelligent identification and analysis method for an examination answer sheet system
  • An intelligent identification and analysis method for an examination answer sheet system

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Experimental program
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Embodiment

[0025] 1. Image preprocessing technology

[0026] 1.1 Image grayscale

[0027] The color of each pixel of a color image is composed of three color components: red (R), green (G), and blue (B). The RGB color mode is based on optical principles. Each color has 255 kinds of grayscale values ​​can be taken, 0 represents the darkest black, otherwise 255 represents white. A grayscale image is a special color image in which the three component values ​​of R, G, and B are set to be the same. The image feature description of the grayscale image has not changed, and it can still reflect the overall and local brightness and chromaticity characteristics of the entire image.

[0028] Image grayscale is the process of converting a color image into a grayscale image. Since the processing of color images requires three channels of RGB, the time overhead is relatively large. Image grayscale is to convert the data transmission of three channels into a single channel, which can reduce the amo...

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Abstract

The invention discloses an intelligent identification and analysis method for an examination answer sheet system. The method comprises the following steps: carrying out item-by-item decomposition operation on image gray scale, image binaryzation, image denoising and morphological processing in an image preprocessing technology; an independent peak point is formed by using a monitoring image inclination and rotation correction technology, and an image is read for binaryzation; Edge monitoring operator monitoring is constructed by using an edge monitoring technology and through an original imagedifferential technology, and image filtering, image enhancement, image detection, a Canny operator and a Canny edge recognition algorithm are formed; and data image recognition analysis is carried out by adopting image recognition point positioning and affine transformation. The method can achieve the intelligent high-speed recognition of the answer sheet, is higher in image precision, is high inefficiency, is not limited to specific scanning equipment, achieves the mining and analysis of large data of batch scanning results, can intelligently recognize specific wrong knowledge points, and can achieve the intelligent statistical induction.

Description

technical field [0001] The invention relates to an intelligent identification and analysis method for an examination answer card system. Background technique [0002] At present, the current answer sheet recognition has problems such as image instability, lack of big data analysis, low efficiency, and inability to identify specific wrong knowledge points. Due to the irregular answering habits of the candidates and the changeable style of the test answer sheets, the wrong results cannot be intervened and monitored in time. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defect of image instability in answer card identification in the prior art, and provide an intelligent identification and analysis method for an examination answer card system. [0004] In order to solve the problems of the technologies described above, the present invention provides the following technical solutions: [0005] The present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/20G06K9/32G06T5/00G06T7/13G06T7/136G06T7/187G06T7/194
Inventor 季海涛
Owner 江苏博墨教育科技有限公司
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