一种新的RGB空间的彩色图像编码方法

为了能够较好地去除彩色图像色彩分量的相关性, 并能获得较好的恢复图像, 基于图像色彩信息, 提出了一种基于RGB空间的彩色图像压缩编码算法, 高效地去除了彩色图像各分量间的相关性。算法对其中一个分量进行完整DCT变换，对其他两个分量只求少数几个非零系数。采用查表法来进行DCT变换，使查表法的优越性得到更好的体现。通过对新色彩空间编码性能进行的实验分析结果表明, 该方法较好地去除了彩色图像色彩分量的相关性, 且算法实现简单, 具有较好的信噪比, 不仅恢复图像视觉效果良好, 并且易于与其他的压缩、编码方法结合

New approach of color images coder in RGB color spaces

In order to dispel the correlation between color components of color images more efficiently and get better color images compression results,this paper presented an algorithm for the color image coding in the RGB color spaces.In RGB color space,coded one of the three color components of a color image using DCT coding, the other two components only asked the minority several effective coefficients. The method of searching tables took place of general DCT method. Many experiments were carried out to analyze the encoding performance in the new color space. The results show that the new approach can get rid of the correlation between color components of color images efficiently and is easily implemented. It also boasts of better signal to noise ratio. The reconstructed image is visual comfort and the coder is easily combined with other compression and encoding methods.