摘要
提出了一种基于RGB三基色系统的对高灰度分辨率图像进行伪彩色编码的非线性方法。在该方法中 ,对小于 2 4位灰度分辨率的图像来说 ,任一空间 (x ,y)处的灰度值 f(x ,y)均可用 2 4位二进制数 fi(i=0 ,1,… ,2 3)来表示。通过Ri=f3i,Gi=f3i+1,Bi=f3i+2 (i =0 ,1,… ,7)进行非线性编码 ,得到 3个 8位二进制数R ,G和B ,将其分别乘以KR,KG和KB 规模因子后 ,作为RGB三基色系统的三色系数 ,实现了灰度图像的等密度伪彩色编码。该方法通用性强 ,可实现 1位到 2 4位灰度图像的伪彩色编码 ,并且处理高分辨率灰度图像与处理低分辨率灰度图像的方法是一致的 。
A non linear method of pseudo color coding for high gray resolution image based on tri primaries is proposed firstly. For any space (x,y), a gray image which has less than 24 bit resolution refers to a two dimensional intensity function, denoted by f(x,y), can be expressed with one number of 24 bit, which is f i(i =0,1,...,23).Three numbers of 8 bits R,G and B are obtained individually through non linear coding by R i=f 3i , G i=f 3i+1 , B i=f 3i+2 (i =0,1,...,7). Then R,G and B are multiplied by scale factor K R,K G and K B individually, and are fed separately into the red, green and blue guns of the monitor. This method has characteristic of strong universal usage, which can process various image of gray resolution from 1 bit to 24 bit.
出处
《光学技术》
CAS
CSCD
2002年第2期115-117,共3页
Optical Technique
