计算机工程 ›› 2012, Vol. 38 ›› Issue (2): 226-228.doi: 10.3969/j.issn.1000-3428.2012.02.075

• 图形图像处理 • 上一篇    下一篇

基于RGB灰度值缩放的彩色图像增强

郑江云,江巨浪,黄 忠   

  1. (安庆师范学院物理与电气工程学院,安徽 安庆 246011)
  • 收稿日期:2011-07-06 出版日期:2012-01-20 发布日期:2012-01-20
  • 作者简介:郑江云(1973-),女,副教授、硕士,主研方向:图像质量评价,图像水印;江巨浪,教授、博士;黄 忠,助教、硕士
  • 基金项目:
    安徽省自然科学基金资助项目(090412065);安徽省高等学校省级自然科学基金资助项目(KJ2009B123)

Color Image Enhancement Based on RGB Gray Value Scaling

ZHENG Jiang-yun, JIANG Ju-lang, HUANG Zhong   

  1. (School of Physics and Electronic Engineering, Anqing Normal University, Anqing 246011, China)
  • Received:2011-07-06 Online:2012-01-20 Published:2012-01-20

摘要: 为保持彩色图像增强时色调不变,提出一种基于RGB灰度值缩放的彩色图像增强算法。采用二次函数增强像素RGB三基色的最大值,获得缩放因子k,利用k值增强相应像素的RGB灰度值。实验结果表明,该算法能增强不同压缩比的彩色图像,综合性能优于现有算法。

关键词: 彩色图像增强, RGB色彩空间, 二次函数, JPEG图像, 压缩质量

Abstract: In order to remain the hue invariability during the color image enhancement, this paper presents an enhancement algorithm of color image based on RGB gray value scaling. It uses the twicing function to enhance the maximum of RGB pixel values, and gets the scaling k to adjust the RGB value with gain acquired. Experimental results show that the algorithm is efficient for enhancement of color image with compression at different quality, and outperforms the existing algorithm in most cases.

Key words: color image enhancement, RGB color space, twicing function, JPEG image, compression quality

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