Display Enhancement

Brightness, Contrast, Saturation (Color), and Hue (Tint)

Working in the YCbCr color space simplifies the implementation of brightness, contrast, saturation, and hue controls, as shown in Figure 5.1. Also illustrated are multiplexers to allow the output of black screen, blue screen, and color bars.

Alert!

The designer should ensure that no overflow or underflow wraparound errors occur, effectively saturating results to the 0 and 255 values.

Figure 5.1. Hue, Saturation, Contrast, and Brightness Controls.

Many displays also use separate hue and saturation controls for each of the red, green, blue, cyan, yellow, and magenta ...

Get Digital Video and DSP: Instant Access now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.