Spring-cleaning: calibration clarifies the picture, part 2; before you can reliably assess the quality of images a display presents, you first need to fine-tune the display for utmost accuracy. Last time, we focused on setting black-and-white levels. This time, we turn to color. (how it works).

EDN, April, 2003 by Dipert, Brian

IMAGING SCIENCE long ago figured out that the human visual system notices luminance errors more readily than it does chrominance inaccuracies. This fact is at the heart of the bandwidth-limited color portion of the NTSC (National Television Standards Committee) broadcast spectrum, and it's also the foundation of the color subsampling that most video-compression algorithms employ (Reference 1). Just because gray-scale accuracy is most important, though, you shouldn't conclude that color accuracy is unimportant. After I cover one remaining luminance issue left over from Part 1, I'll tackle the topic of color (Reference 2).

TAKING YOUR TV'S TEMPERATURE

Ideally, the color temperature that the display outputs should remain constant at 6500[degrees]K...