层级节点

层级节点。

The Levels Node read the input color channels and outputs analytical values.

图像

通道

C(合并的RGB)，R(红)，G(绿)，B(蓝)，L(亮度)

基于图像层级的1维值信息。

The mean is the average value of all image pixels in specified channel (combined, red, green, blue, luminance). It represents the overall brightness of the image and can be used as such for setups that depend on how “bright” or “dark” the input is.

Standard Deviation

How much pixel values differ from the mean. A low standard deviation indicates that the pixel values tend to be very close to the mean. A high standard deviation indicates that the values are spread out over a large range of values.