On 01/02/2010, at 5:50 AM, (*)·´`·.¸.»ÐëÄdMäñ·´`·.¸.»(*) wrote:
Mark you're a genius :) it works !
However, I changed the conversion formulas for reasons explained here:
http://www.fourcc.org/fccyvrgb.php (see Avery Lee's JFIF
Clarification )
This also depends on the colour space you are using, 420mpeg2 or
420jpeg.
this was my code:
// if (ITU601) {
yc =((16843 * r) + (33030 * g) + (6423 *
b)>>16) + 16;
uc =(-(9699 * r) - (19071 * g) + (28770 *
b)>>16) + 128;
vc =((28770 * r) - (24117 * g) - (4653 *
b)>>16) + 128;
Integer conversion is faster than floating point.
I do recommend optimising your code this way.
Thanks again for your time.
No Problem. One day I hope to get a job writing YUV video filters :-)
Mark
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