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Automatic straightening method for image linear geometric deformation

A technology of geometric deformation and geometric figures, applied to instruments, character and pattern recognition, computer components, etc., can solve problems such as low efficiency, difficulty in ensuring accuracy, and unautomated processing procedures

Inactive Publication Date: 2008-03-26
方正国际软件(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is effective, the efficiency is very low, and the automatic processing process cannot be realized, and the accuracy of the correction is difficult to be guaranteed.

Method used

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  • Automatic straightening method for image linear geometric deformation
  • Automatic straightening method for image linear geometric deformation
  • Automatic straightening method for image linear geometric deformation

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Embodiment Construction

[0065] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:

[0066] In this embodiment, the method of the present invention is used to identify the authenticity of the seal. In this application process, the image requirements of the reserved seal and the seal to be inspected must be the same size and not deformed, so that it is possible to complete the follow-up Image registration, error analysis, and finally realize seal recognition. Therefore, if the geometric deformation of the seal to be inspected needs to be corrected, it can be compared with the reserved seal for identification, so as to correctly determine the authenticity of the seal. As shown in FIG. 2 , the schematic diagram of the deformed image of the stamp after scanning the stamp is corrected by the method described in the present invention to obtain the corrected schematic diagram as shown in FIG. 3 .

[0067] As shown in Figure 1: a method for ...

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Abstract

The related auto-correction method for image linear geometric distortion comprises: according to pre-saved target image information, deciding the information similarity, analyzing multi-dimension distortion, calculating distortion parameters, and taking adaptive linear correction. Compared with prior art, this invention avoids manual operation to increase accuracy and efficiency.

Description

technical field [0001] The invention belongs to the technical field of graphics and image processing, and in particular relates to a method for automatically correcting linear geometric deformation of an image. Background technique [0002] With the development of science and technology, more and more graphics and images are processed, and the application fields are becoming more and more extensive. Usually, when the image starts to be processed, the image is collected by the image acquisition device. However, due to the reasons of the image acquisition device itself and the influence of various environmental factors, the collected image may have different degrees of geometric deformation with different characteristics. For similar devices, even in the same working environment, the difference in image geometric deformation is unpredictable. [0003] The main reasons for the uncertain geometric deformation of the image are as follows: (1) the systematic error of the image ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/60
Inventor 曾培祥
Owner 方正国际软件(北京)有限公司