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Fixed bug in border interpolation.

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This commit is contained in:
Emil Martinec
2010-09-16 22:24:32 -05:00
parent a905d24190
commit b113a0bead
1 changed files with 11 additions and 12 deletions
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23
rtengine/fast_demo.cc
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@@ -58,6 +58,7 @@ void RawImageSource::fast_demo() {
//first, interpolate borders using bilinear
for (i=0; i<H; i++) {
for (j=0; j<bord; j++) {//first few columns
for (c=0; c<6; c++) sum[c]=0;
for (i1=i-1; i1<i+2; i1++)
for (j1=j-1; j1<j+2; j1++) {
if (i1 > -1 && i1 < H && j1 > -1) {
@@ -84,6 +85,7 @@ void RawImageSource::fast_demo() {
}//j
for (j=W-bord; j<W; j++) {//last few columns
for (c=0; c<6; c++) sum[c]=0;
for (i1=i-1; i1<i+2; i1++)
for (j1=j-1; j1<j+2; j1++) {
if (i1 > -1 && i1 < H && j1 < W) {
@@ -114,6 +116,7 @@ void RawImageSource::fast_demo() {
for (j=bord; j<W-bord; j++) {
for (i=0; i<bord; i++) {//first few rows
for (c=0; c<6; c++) sum[c]=0;
for (i1=i-1; i1<i+2; i1++)
for (j1=j-1; j1<j+2; j1++) {
if (j1 > -1 && j1 < W && i1 > -1) {
@@ -140,6 +143,7 @@ void RawImageSource::fast_demo() {
}//i
for (i=H-bord; i<H; i++) {//last few rows
for (c=0; c<6; c++) sum[c]=0;
for (i1=i-1; i1<i+2; i1++)
for (j1=j-1; j1<j+2; j1++) {
if (j1 > -1 && j1 < W && i1 < H) {
@@ -174,7 +178,7 @@ void RawImageSource::fast_demo() {
{
int rb;
float wtu, wtd, wtl, wtr;
float wt1, wt2, wt3, wt4;
float * dirwt = new float [0x20000];
@@ -198,18 +202,13 @@ void RawImageSource::fast_demo() {
} else {
//compute directional weights using image gradients
wtu=dirwt[(abs(ri->data[i+1][j]-ri->data[i-1][j])+abs(ri->data[i][j]-ri->data[i-2][j])+abs(ri->data[i-1][j]-ri->data[i-3][j])) >>8];
wtd=dirwt[(abs(ri->data[i-1][j]-ri->data[i+1][j])+abs(ri->data[i][j]-ri->data[i+2][j])+abs(ri->data[i+1][j]-ri->data[i+3][j])) >>8];
wtl=dirwt[(abs(ri->data[i][j+1]-ri->data[i][j-1])+abs(ri->data[i][j]-ri->data[i][j-2])+abs(ri->data[i][j-1]-ri->data[i][j-3])) >>8];
wtr=dirwt[(abs(ri->data[i][j-1]-ri->data[i][j+1])+abs(ri->data[i][j]-ri->data[i][j+2])+abs(ri->data[i][j+1]-ri->data[i][j+3])) >>8];
//wtu=1/SQR(1.0+fabs((int)ri->data[i+1][j]-ri->data[i-1][j])+fabs((int)ri->data[i][j]-ri->data[i-2][j])+fabs((int)ri->data[i-1][j]-ri->data[i-3][j]));
//wtd=1/SQR(1.0+fabs((int)ri->data[i-1][j]-ri->data[i+1][j])+fabs((int)ri->data[i][j]-ri->data[i+2][j])+fabs((int)ri->data[i+1][j]-ri->data[i+3][j]));
//wtl=1/SQR(1.0+fabs((int)ri->data[i][j+1]-ri->data[i][j-1])+fabs((int)ri->data[i][j]-ri->data[i][j-2])+fabs((int)ri->data[i][j-1]-ri->data[i][j-3]));
//wtr=1/SQR(1.0+fabs((int)ri->data[i][j-1]-ri->data[i][j+1])+fabs((int)ri->data[i][j]-ri->data[i][j+2])+fabs((int)ri->data[i][j+1]-ri->data[i][j+3]));
wt1=dirwt[(abs(ri->data[i+1][j]-ri->data[i-1][j])+abs(ri->data[i][j]-ri->data[i-2][j])+abs(ri->data[i-1][j]-ri->data[i-3][j])) >>4];
wt2=dirwt[(abs(ri->data[i-1][j]-ri->data[i+1][j])+abs(ri->data[i][j]-ri->data[i+2][j])+abs(ri->data[i+1][j]-ri->data[i+3][j])) >>4];
wt3=dirwt[(abs(ri->data[i][j+1]-ri->data[i][j-1])+abs(ri->data[i][j]-ri->data[i][j-2])+abs(ri->data[i][j-1]-ri->data[i][j-3])) >>4];
wt4=dirwt[(abs(ri->data[i][j-1]-ri->data[i][j+1])+abs(ri->data[i][j]-ri->data[i][j+2])+abs(ri->data[i][j+1]-ri->data[i][j+3])) >>4];
//store in rgb array the interpolated G value at R/B grid points using directional weighted average
green[i][j]=(int)((wtu*ri->data[i-1][j]+wtd*ri->data[i+1][j]+wtl*ri->data[i][j-1]+wtr*ri->data[i][j+1])/(wtu+wtd+wtl+wtr));
green[i][j]=(int)((wt1*ri->data[i-1][j]+wt2*ri->data[i+1][j]+wt3*ri->data[i][j-1]+wt4*ri->data[i][j+1])/(wt1+wt2+wt3+wt4));
//red[i][j] = green[i][j];
//blue[i][j] = green[i][j];