As shown in the following code snippet, the bright-pass filter first maps the scene to a desired middle gray target luminance before subtracting out the dark areas.
下面的代码片段展示了光亮过滤器在减去黑暗区域之前首先映射场景到希望的中等灰度的亮度的物体。
2
Morphological filtration is a new nonlinear filtration technology. It is most effective to (filter) pulse noise in the processing of gray images.
形态滤波是一种新型的非线性滤波技术，在灰度图像处理中，它对滤除脉冲噪声最为有效。
3
Treat with plate grain image got by video using methods of gray level transformation, median filter, erosion, expansion and so on, gain the image which only includes grain, then detect brim of grain.