Displaying 1 result from an estimated 1 matches for "ms893078".
2009 Jun 16
2
YCbCr <-> RGB conversion question
...]: from colors import *
In [2]: a = [255, 0, 255]
In [3]: RGB2YCbCr(a)
Out[3]: (107, 202, 222)
In [4]: YCbCr2RGB(RGB2YCbCr(a))
Out[4]: array([255, 1, 255])
As you can see, the G component was increased from 0 to 1. Those
routines are the same as here:
http://msdn.microsoft.com/en-us/library/ms893078.aspx
Now let's try floating point conversions:
In [3]: RGB2YCbCr_precise(a)
Out[3]: array([106, 202, 222], dtype=uint8)
In [4]: YCbCr2RGB_precise(RGB2YCbCr_precise(a))
Out[4]: array([255, 0, 254], dtype=uint8)
This time the B component was decreased by 1... Those floating point
routines w...