Method for rapidly extracting contour line under non-uniform illumination

A contour line, non-uniform technology, applied in instruments, character and pattern recognition, computer parts and other directions, can solve problems such as limited scene, achieve the effect of reducing complexity and superior processing time

Active Publication Date: 2020-06-05
XIAMEN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the hardware binarization camera only extracts two kinds of information, 0 / 1, the applicable scenarios are very limited.

Method used

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  • Method for rapidly extracting contour line under non-uniform illumination
  • Method for rapidly extracting contour line under non-uniform illumination
  • Method for rapidly extracting contour line under non-uniform illumination

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Embodiment Construction

[0040] The technical solutions and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In industrial control, it is difficult to create a scene with uniform illumination like the shadowless lamp on the operating table, and non-uniform illumination is an inevitable scene. In the case of non-uniform illumination, how to use a low-cost processor to efficiently extract boundary lines in scenarios with high time requirements for image data processing, reduce algorithm complexity, reduce processor processing time, and reduce enterprise hardware In terms of cost, the present invention well balances the game between system performance improvement and hardware cost reduction.

[0042] Such as figure 1 As shown, the present invention provides a method for quickly extracting contour lines under non-uniform illumination, comprising the following steps:

[0043] Step 1, image acquisition: use the grayscale ...

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Abstract

The invention discloses a method for quickly extracting a contour line under non-uniform illumination, and the method comprises the following steps: 1, collecting an image through employing a gray scale camera, and storing gray scale data in a two-dimensional array mode; 2, establishing a rectangular coordinate system in the x-y direction by taking any position as an original point; 3, selecting and extracting the starting coordinates of the contour line and the order of the kernel; 4, filtering and extracting the boundary at the same time, and storing the contour coordinates in a two-dimensional array form; 5, carrying out k times of B spline curve fitting on the contour array obtained in the step 4 to obtain a smooth contour line. The method is low in algorithm complexity, so the processing time of the processor is shortened, the low-cost processor can be adopted, the system performance is improved, and the hardware cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of computer vision and image processing, in particular to a method for quickly extracting contour lines under non-uniform illumination. Background technique [0002] In the mechanical control of some high-speed movements, computer vision and graphics processing technology will be used. In short, it is to obtain images through the camera, and then analyze the data of the images to control the mechanical movement. This requires the data processing speed of the core processor to match the speed requirements of the motion control system. [0003] Cameras currently on the market are roughly divided into three categories: full-color cameras, grayscale cameras, and binarized cameras. [0004] In terms of industrial control, in order to further reduce the expenditure on hardware costs, if a full-color camera is used, the data to be processed will be large. In order to achieve high performance of the system, the per...

Claims

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Application Information

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IPC IPC(8): G06K9/46
CPCG06V10/44
Inventor 袁江南赵嗣庆叶志伟梁涛廖铖伟张紫翔郑思杰
Owner XIAMEN UNIV OF TECH
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