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== Redcode ==

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Doing image comparison revealed, that Kb = Kr = 0.0 for redcode :)
This commit is contained in:
Peter Schlaile 2008-06-22 15:48:12 +00:00
parent 5372def2b0
commit 63060128ec
1 changed files with 9 additions and 15 deletions
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24
extern/libredcode/debayer.c vendored
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@ -9,8 +9,6 @@ void redcode_ycbcr2rgb_fullscale(
int x,y;
int pix_max = 4096;
int mask = pix_max - 1;
float Kb = 0.0722;
float Kr = 0.2126;
float *o;
for (y = 0; y < height; y++) {
@ -25,9 +23,9 @@ void redcode_ycbcr2rgb_fullscale(
float y2 = (planes[3][i] & mask);
float y2p = (planes[3][i_p] & mask);
float b_ = cb * (1.0 - Kb)/(pix_max/2);
float r_ = cr * (1.0 - Kr)/(pix_max/2);
float g_ = (- Kr * r_ - Kb * b_)/(1.0 - Kr - Kb);
float b_ = cb /(pix_max/2);
float r_ = cr /(pix_max/2);
float g_ = 0.0;
float y_[4] = {y1 / pix_max,
(y2 + y2p)/2 / pix_max,
@ -68,8 +66,6 @@ void redcode_ycbcr2rgb_halfscale(
int x,y;
int pix_max = 4096;
int mask = pix_max - 1;
float Kb = 0.0722;
float Kr = 0.2126;
for (y = 0; y < height; y++) {
float *o = out + width * (height - y - 1);
@ -80,9 +76,9 @@ void redcode_ycbcr2rgb_halfscale(
float cr = (planes[2][i] & mask) - pix_max/2;
float y2 = (planes[3][i] & mask);
float b_ = cb * (1.0 - Kb)/(pix_max/2);
float r_ = cr * (1.0 - Kr)/(pix_max/2);
float g_ = (- Kr * r_ - Kb * b_)/(1.0 - Kr - Kb);
float b_ = cb /(pix_max/2);
float r_ = cr /(pix_max/2);
float g_ = 0.0;
float y = (y1 + y2)/2 / pix_max;
@ -101,8 +97,6 @@ void redcode_ycbcr2rgb_quarterscale(
int x,y;
int pix_max = 4096;
int mask = pix_max - 1;
float Kb = 0.0722;
float Kr = 0.2126;
for (y = 0; y < height; y += 2) {
float *o = out + (width/2) * (height/2 - y/2 - 1);
@ -113,9 +107,9 @@ void redcode_ycbcr2rgb_quarterscale(
float cr = (planes[2][i] & mask) - pix_max/2;
float y2 = planes[3][i] & mask;
float b_ = cb * (1.0 - Kb)/(pix_max/2);
float r_ = cr * (1.0 - Kr)/(pix_max/2);
float g_ = (- Kr * r_ - Kb * b_)/(1.0 - Kr - Kb);
float b_ = cb /(pix_max/2);
float r_ = cr /(pix_max/2);
float g_ = 0.0;
float y = (y1 + y2)/2 / pix_max;