基于IHS空间的灰度图像互补色伪彩色编码

Gray Image Complementary Pseudo-Color Coding Based on IHS Space

对灰度图像的任一灰度级,将对应的彩色影射到垂直于I=0.5的平面上(I为强度),饱和度S可取的最大值为原始图像最大灰度值的0.75倍,相邻两灰度级对应的H值(H为色度)互为反相。将所得IHS值变换为RGB值即得伪彩色图像。用该方法对医学磁共振图像进行了处理,给出了实验结果。

The corresponding color for any gray level of a gray image is mapped to the plane that is perpendicular to a plane with which its intensity I=0.5, the maximal saturation value S is 0.75 times of the maximal gray value for the original image and the corresponding hue values H of the adjacent two gray levels are anti-phase. The obtained IHS values are converted into RGB values, i.e., pseudo-color image. The method is applied to processing medical magnetic resonance images and the experimental results are given.