The tall and short masts of yachts are useful to find ghost, registration shifting and waveform distortion (i. e. linking) of brightnesssignal.
游艇的长和短桅杆是用来评估电视屏幕上的重影、定位转移和亮度信号波形失真的。
2
The best signal depends not only on its brightness but also on how well it contrasts with the background against which it must be seen.
最好的信号不仅取决于它的亮度，还取决于它与背景的对比度。
3
In Human Vision System, the optical signal is separated to brightness and chroma information, and they are processing differently. It is an important quality of Human Vision System.