def yuvToRgb( yuv ):
"take an yuv array [y,u,v] (0..255) and return it in [r,g,b] (0..255)"
"Attended value:"
"red: [255,0,0] => [0°=>0,255,255]"
y, u, v = yuv;
r = numeric.limitRange( int( 1.164*(y - 16) + 1.596*(v-128) ), 0, 255 );
g = numeric.limitRange( int( 1.164*(y - 16) - 0.813*(u-128) - 0.391*(v-128) ), 0, 255 );
b = numeric.limitRange( int(1.164*(y - 16) + 2.018*(u-128) ), 0, 255 );
return [ r, g, b];
def interpolatePosition( aPos1, aPos2, rRatio = 0.5 ):
"create a position intermediary between two positions if rRatio is 0. => pos1, if at 1. => pos2"
"rRatio in [0.,1.]"
listPosResult = {};
rRatio = numeric.limitRange( rRatio, 0., 1. );
for k, v in aPos1.iteritems():
if( k in aPos2 ):
listPosResult[k] = v * ( 1. - rRatio ) + aPos2[k] * rRatio;
return listPosResult;
def interpolatePosition(aPos1, aPos2, rRatio=0.5):
"create a position intermediary between two positions if rRatio is 0. => pos1, if at 1. => pos2"
"rRatio in [0.,1.]"
listPosResult = {}
rRatio = numeric.limitRange(rRatio, 0., 1.)
for k, v in aPos1.iteritems():
if (k in aPos2):
listPosResult[k] = v * (1. - rRatio) + aPos2[k] * rRatio
return listPosResult