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iptransform: correct profile based distortion/CA before rotation

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Like perspective correction also rotation correction should be applied
after distortion/CA correction.
This commit is contained in:
Simone Gotti
2024-06-15 09:04:22 +02:00
parent 6ecaa6f301
commit 363f3cc2a6
1 changed files with 15 additions and 16 deletions
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31
rtengine/iptransform.cc
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@@ -515,14 +515,14 @@ bool ImProcFunctions::transCoord (int W, int H, const std::vector<Coord2D> &src,
break;
}
if (pLCPMap && params->lensProf.useDist) {
pLCPMap->correctDistortion(x_d, y_d, w2, h2);
}
// rotate
double Dx = x_d * cost - y_d * sint;
double Dy = x_d * sint + y_d * cost;
if (pLCPMap && params->lensProf.useDist) {
pLCPMap->correctDistortion(Dx, Dy, w2, h2);
}
// distortion correction
double s = 1;
@@ -700,7 +700,7 @@ void ImProcFunctions::transform (Imagefloat* original, Imagefloat* transformed,
}
}
transformGeneral(highQuality, original, dest, cx, cy, sx, sy, oW, oH, fW, fH, pLCPMap.get(), useOriginalBuffer);
if (highQuality && dest != transformed) {
transformLCPCAOnly(dest, transformed, cx, cy, pLCPMap.get(), useOriginalBuffer);
}
@@ -1240,25 +1240,25 @@ void ImProcFunctions::transformGeneral(bool highQuality, Imagefloat *original, I
break;
}
if (enableLCPDist) {
pLCPMap->correctDistortion(x_d, y_d, w2, h2);
}
// rotate
const double Dxc = x_d * cost - y_d * sint;
const double Dyc = x_d * sint + y_d * cost;
double Dxr = x_d * cost - y_d * sint;
double Dyr = x_d * sint + y_d * cost;
if (enableLCPDist) {
pLCPMap->correctDistortion(Dxr, Dyr, w2, h2);
}
// distortion correction
double s = 1.0;
if (enableDistortion) {
const double r = sqrt(Dxc * Dxc + Dyc * Dyc) / maxRadius;
const double r = sqrt(Dxr * Dxr + Dyr * Dyr) / maxRadius;
s = 1.0 - distAmount + distAmount * r;
}
for (int c = 0; c < (enableCA ? 3 : 1); ++c) {
double Dx = Dxc * (s + chDist[c]);
double Dy = Dyc * (s + chDist[c]);
double Dx = Dxr * (s + chDist[c]);
double Dy = Dyr * (s + chDist[c]);
// de-center
Dx += w2;
@@ -1386,7 +1386,7 @@ void ImProcFunctions::transformLCPCAOnly(Imagefloat *original, Imagefloat *trans
for (int c = 0; c < 3; c++) {
double Dx = x;
double Dy = y;
pLCPMap->correctCA(Dx, Dy, cx, cy, c);
// Extract integer and fractions of coordinates
@@ -1522,4 +1522,3 @@ bool ImProcFunctions::needsTransform (int oW, int oH, int rawRotationDeg, const
}