基于频谱面的黑白图片彩色化

Color the Black and White Picture Based on the Frequency Plane

黑白图片彩色化,能够更好地获取图片信息。通过观察动态激光散斑,当散斑不再变化的时候,观察面就是频谱面的位置,确定了频谱面,然后将黑白图片置于物平面,将π位相滤波器置于频谱面上的正一级(或负一级)谱的频谱面上,并置以绿色滤色片,在负一级(或正一级)谱上置以红色滤色片。在输出像面上,就会形成按灰度均匀分布的假彩色像。

Coloring the black and white picture can obtain the information of the picture better.The imaging position is at the location of the frequency plane when the speckle no longer changes by observing dynamic laser speckle.Confirm the frequency plane,and then place the black and white picture and the Langqi raster on the object plane,and place theπ-phase filter on the first positive level(or the first negative level)spectrum on the frequency plane.And place green color filter on the first negative level or the red color filter placed on the first positive level frequency spectrum.In the output image plane,it will form a pseudo-color image of gray degree distribution.