color parameters

Brightness  -128 ~ 127, usually set in the register as (8-bit) 2’s complement form.  1(1), 0x7F(127) is the brightest. 0x80(-128) is the darkest, 0xFF (-1).
Contrast (luminance contrast gain)  -128 ~ 127, 100(64h) means a gain of 1. Increase of contrast by “1” means adjustment of gain by %1.
Saturation(chroma gain, for U and V)  -128 ~ 127
Hue  +36 to –36. Only effective on NTSC system. The positive value gives greenish tone and negative value gives purplish tone.
Sharpness (for luma)  0 ~ 15. 15 provide the strongest sharpness.
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s