基于感知颜色空间的灰度图像伪彩色编码

提出了一种基于感知颜色空间的灰度图像伪彩色编码的新方法。首先建立了灰度级和色调、饱和度和亮度等与人的感知颜色特征之间的函数关系。然后通过感知颜色空间到RGB空间的矩阵变换 ,得到相应的RGB值。最后将其分别送入彩色显示器的红、绿、蓝枪即可得到伪彩色图像。建立了相应的数学模型 ,给出了分析和实验结果 ,并对如何获得符合人们视觉习惯的伪彩色图像等问题进行了讨论。根据不同的实际需要 ,可以方便地建立灰度级与颜色的色调、饱和度与亮度的不同对应关系 ,使产生的伪彩色图像符合人们的感知习惯。用该方法得到的伪彩色是近似均匀的 ,即在不同的灰度级上 ,相邻两灰度级对应的色差近似相等

Pseudocolor coding of gray image based on perceptual color space

A new approach of pseudo-color coding of gray image based on a perceptual color space is proposed. Firstly, the individual functional relationship of hue, satu ration, and intensity with gray level is established. Then the corresponding R, G, and B are obtained through the transformation from the perc eptual space to RGB space, and are fed separately into the red, green, and blue guns of the monitor. The corresponding mathematical models are established, and t he analysis and experimental results are also given. The problem of how to get a pseudo-color, which conforms to visual experience or convention,is also discu ss ed. This approach has advantages of allowing the user to specify color informati on easily, providing more pleasing results, and getting higher color sensitivity of gray levels.