Forum Post: RE: How to quick get YUV420 video data in dsp?

Hi Changsheng,

Thanks for your post.

Y'UV signals are typically created fromRGB (red, green and blue) source. Weighted values of R, G, and B are summed to produce Y', a measure of overall brightness or luminance. U and V.

Y = 0.299R + 0.587G + 0.114B    U'= (B-Y)*0.565    V'= (R-Y)*0.713

Please check the below wiki article for more details:

http://en.wikipedia.org/wiki/YUV#Luminance.2Fchrominance_systems_in_general

I am not very clear about your question, but anyway, kindly check whether the above articled answered your question, if not, could you please elloborate your query with more details?

Thanks & regards,

Sivaraj K