Improved refinement algorithm based on curve fitting

An algorithm and line technology, applied in the field of thinning algorithms based on linear fitting, which can solve problems such as distortion of thinning results and concave outlines of outlines.

Inactive Publication Date: 2017-11-07
JIANGNAN UNIV
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Problems solved by technology

However, all kinds of thinning algorithms have a common problem, that is, the thinning results are seriously distorted at the intersection of the outer frame line and the inner line. Almost all thinning algorithms form the outer frame line to the inner line. sunken

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  • Improved refinement algorithm based on curve fitting
  • Improved refinement algorithm based on curve fitting

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Embodiment Construction

[0019] The following describes the embodiments of the present invention in detail. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation modes and processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0020] The first is the design of the diamond window. After the study of the morphological refinement algorithm, if the morphological refinement does not use no pixels to be deleted as the iterative termination condition, it stops at a certain stage. At this stage, The line part has been refined to a single pixel width, and the intersection area has not been refined yet, and there is no distortion. In order to make the morphological algorithm stop at this stage and be inspired by the maximum square method, a maximum diamond window is designed to terminate the iterative process of the morphological algorithm. The judgment and termination process is ...

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Abstract

In the three-dimensional reconstruction process based on mesh projection, the mesh refinement is a crucial step and has a significant impact on the subsequent point matching. In order to solve the mesh refinement problem, the invention first adopts a refinement algorithm based on a mathematical morphology and improved by an index table to perform initial refinement processing on a binocular vision image. Then, for the problem that a frame line is depressed towards the internal line in the operation process of the refinement algorithm, the invention successfully solves the problem through an improved refinement algorithm based on linear fitting. The experimental results show that the algorithm improves the speed of mesh refinement and solves the problem of mesh depression.

Description

Technical field [0001] The invention relates to a method in the technical field of image processing, in particular to a thinning algorithm based on mathematical morphology that performs preliminary thinning processing on an image, and then a thinning algorithm based on linear fitting. Background technique [0002] In the research process of binocular vision 3D reconstruction, it is an important step to extract features from binocular vision images and obtain the correct matching point pairs. However, in the process of capturing images with the binocular camera, due to the shooting environment, camera lens processing accuracy, image transmission process and other reasons, some noise and distortion are inevitably generated, resulting in image quality degradation. When using the grid projection method, any free-form surface transformation is converted into grid line deformation. In order to make full use of the information expressed by the grid projection, the study of grid projecti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/136G06T7/155
CPCG06T7/136G06T7/155G06T2207/20036
Inventor 熊雪梅化春键
Owner JIANGNAN UNIV
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