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Color clustering method for central color fringes of De Bruijn color structure light coding image

A technology of color stripes and coded images, applied in image analysis, image data processing, optics, etc., can solve problems such as low sampling density and resolution, low measurement accuracy of three-dimensional objects, and difficult identification of color confusion

Inactive Publication Date: 2011-09-14
CHANGCHUN UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

In previous studies, the color structured light coding method was mostly used for spatial coding and direct coding, and most of them can be used for the measurement of dynamic objects, but due to the influence of the color fidelity and resolution of the CCD camera, it is easy to be affected. Due to the influence of the CCD camera, the ideal effect and accuracy cannot be obtained. It is not easy to find a clear and unambiguous correspondence. The measurement accuracy of three-dimensional objects is not high, and it is difficult to use for the measurement of precise objects.
At the same time, since there are generally more than three colors used, it is easy to cause color confusion and difficult to identify, and usually the sampling density and resolution are not high

Method used

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  • Color clustering method for central color fringes of De Bruijn color structure light coding image
  • Color clustering method for central color fringes of De Bruijn color structure light coding image
  • Color clustering method for central color fringes of De Bruijn color structure light coding image

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Embodiment Construction

[0050] A color clustering method for central color stripes of a De Bruijn color structured light coded image, the required equipment and implementation steps of the method are as follows:

[0051] Required equipment: such as figure 1 As shown, the required equipment includes a projector 1, a projection screen 2, a camera 3, a computer 4, and an object to be measured 5; where the projector 1 and the camera 3 are connected to the computer 4 through cables.

[0052] Implementation steps:

[0053] Step 1, in the computer 4, use the De Bruijn pseudo-random sequence with random characteristics and determinism to generate a 7-element 3-level De Bruijn sequence color structured light encoded image, the background color of the image is black, and its RGB value is ( 0, 0, 0), the width of each color stripe is one pixel, any two adjacent color stripes have different colors and are separated by 3 pixels, and the 7 colors are respectively represented by a 1 , a 2 , a 3 , a 4 , a 5 , ...

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Abstract

The invention provides a color clustering method for the central color fringes of a De Bruijn color structure light coding image, which belongs to the field of a computer image processing technique. In the color clustering method provided by the invention, the color of each pixel point on each central color fringe of the color structure light coding image is clustered by adopting a clustering analysis method. The color clustering method provided by the invention is suitable for the color structure light coding image which has the pixel points of each color in linear distribution, and can effectively improve the accuracy for determining the color of the central color fringes.

Description

technical field [0001] The invention relates to a color clustering method for central color stripes of a De Bruijn color structured light coded image, and belongs to the technical field of computer image processing. Background technique [0002] Optical three-dimensional measurement technology refers to the use of optical means to measure the shape of an object, so as to obtain the three-dimensional coordinate data of the shape of the object, and use this data to judge and evaluate the shape of the object, or to measure the three-dimensional shape of the object. reconstruction. The 3D reconstruction system based on structured light is an improvement and extension of the traditional stereo vision system. [0003] The structured light method is to form a certain form of light by passing the beam emitted by a laser or projector through an optical system, including point, single line, multi-line, single circle, concentric multi-circle, grid, cross, gray-scale coding pattern, co...

Claims

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Application Information

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IPC IPC(8): G06T7/40G03B29/00
Inventor 韩成杨华民李明勋姜会林范静涛丁莹
Owner CHANGCHUN UNIV OF SCI & TECH
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