Preprocessing of color image based on digital camera

QU Xing-hua; GONG Hui; JIA Guo-xin

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Preprocessing of color image based on digital camera

Article | 更新时间：2020-08-12

- Preprocessing of color image based on digital camera
- Optics and Precision Engineering Vol. 17, Issue 1, Pages: 207-212(2009)
- 作者机构：
  
  天津大学精密测试技术及仪器国家重点实验室天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： O432.3;TP391.4
- Received：27 March 2008，
  
  Revised：08 May 2008，
  
  Published：2009
- 稿件说明：
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曲兴华, 宫辉, 贾果欣. 数码相机的彩色图像预处理过程[J]. 光学精密工程, 2009,17(1): 207-212

QU Xing-hua, GONG Hui, JIA Guo-xin. Preprocessing of color image based on digital camera[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 207-212
曲兴华, 宫辉, 贾果欣. 数码相机的彩色图像预处理过程[J]. 光学精密工程, 2009,17(1): 207-212 DOI：

QU Xing-hua, GONG Hui, JIA Guo-xin. Preprocessing of color image based on digital camera[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 207-212 DOI：

摘要

结合数码相机图像采集特性和人眼视觉误差

讨论了彩色图像预处理过程。通过分析彩色图像的数据格式

将八叉树量化方法用于彩色图像的颜色信息量化

并采用矢量中值滤波消除彩色图像噪声

以实现对彩色图像的合理预处理。结合实验讨论分析了矢量中值滤波法的滤波器窗口参数

并结合颜色信息相似度理论提出了彩色图像预处理效果的评价方法。实验获得了合理的颜色量化方法和滤波器窗口参数

处理得到的图像最大色差变化控制在3个CIELAB色差单位。结果表明

用八叉树结构量化和矢量中值滤波对数码相机采集到的彩色图像进行预处理可达到较理想的效果。

Abstract

To realize color image segmentation

target identification

feature extraction

and other image processing projects

the image preprocessing methods are researched. Based on analysing characteristic of digital camera and human visual error and understanding data formats of color image

an octree arithmetic is applied to color quantization and a vector median filter is used to eliminate noise to realize preprocessing for color images. In combination with a experiment

this paper discusses and analyzes window parameters of vector median filter

and presents an effective evaluation methods by combining color information similarity theory. Finally

a reasonable color quantization method and window parameters are obtained for digital camera

and the chromatism can be controlled within 3 units. Experimental results show that octree color quantization and vector median filter can perform well in preprocessing of color image for digital camera.

关键词

Keywords

references

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