Table 1-2 surface roughness and chrominance of treated wood .

表1-2处理材表面粗糙度及颜色之测定.

Also , as we 'll see shortly , we can reduce chrominance bandwidth considerably via subsampling , without much loss in visual perception .

另外，正如我们马上就会看到的那样，我们可以通过子采样的方法，在视觉效果不会出现较大损失的前提下，大大减小色度信号带宽。