To change the brightness of an image, you need to change the value of each color channel by an equal amount. 要改变图象的颜色,需要用相等的量改变每一个颜色通道。
The cloud optical thickness and effective particle radius of water clouds can be determined solely from reflection function measurements at channel 1 and channel 6 or from function measurements at channel 1 and brightness temperature at channel 3 of FY-1C/ CHPRT data when cloud optical thickness is thicker. 因此当云光学厚度较厚时,可利用通道1和通道6反射率,或通道1反射率和通道3亮度温度同时计算出云的光学厚度和有效粒子半径。
Brightness channel, G, has higher sampling rate than chroma channels, R and B. According to this, we know that variable G saves more image detail. 亮度通道(G通道)采样率高于色度通道(R、B通道)。即G分量相对于R、B分量将保存更多的图像细节。