3 Sep
2006
3 Sep
'06
10:58 a.m.
Mathieu Bouchard wrote:
On Wed, 30 Aug 2006, IOhannes m zmoelnig wrote:
now again my math strikes me. if one pixel takes 3 bytes in pdp and 4 bytes in Gem, then an image of 100x100 pixels has 30000 bytes in pdp and 40000 bytes in Gem. so its 25% less data and not 50% (however, with a better resolution)
Btw, didn't I hear Tom say that the YUV mode is using signed 16-bit instead of unsigned 8-bit values? Or is that just an option?
well, this was my point; that's why i am talking about 2byte datasize.
if pdp is using yuv420, then the above calculation is valid. if pdp is using yuv422, then pdp and Gem have the same imagesize.
i _think_ that signed short YUV is the "native" cs of pdp, though it can handle other cs's too.
mfg.asdr IOhannes