Automatic detection method for test paper form
An automatic detection and test paper technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problem that the form line cannot form a peak value, it is difficult to detect the form, broken line, form line and character sticking can not be satisfied, etc. , to achieve good practical value, high accuracy, high reliability and accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0041] Embodiment 1: In order to better understand the technical solutions of the present invention, the embodiments are further described in detail with reference to the accompanying drawings. The specific operation steps of the automatic detection method for the form of the test paper are as follows:
[0042] (1) Use Hough transform to find the tilt angle
[0043] ①Input sample
[0044] The real-time image of the test paper surface is obtained through the camera, and the image of the student number part and the score part are as figure 1 Shown.
[0045] ②Pretreatment
[0046] The computer performs gray-scale, binarization, smoothing and denoising, thinning and other processing on the real-time test paper image obtained, such as figure 2 Shown.
[0047] ③Calculate the tilt angle
[0048] Hough transformation is performed on the image of the test paper surface, and it is determined whether the image of the test paper surface is inclined. If there is an inclination, the inclinati...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap