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Fix incorrect sampled L*a*b* values

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Use LCMS to convert values back into L*a*b*. The pipette buffer has the
output or working profile applied with LCMS. Performing the inverse
operation fixes the incorrect values shown in the navigator, histogram
indicator bars, and lockable color pickers.
This commit is contained in:
Lawrence Lee
2023-05-28 18:15:27 -07:00
parent 6a11c59b79
commit 8accebe416
10 changed files with 144 additions and 36 deletions
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2
rtengine/improcfun.h
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@@ -116,6 +116,7 @@ class ImProcFunctions
bool multiThread;
void calcVignettingParams(int oW, int oH, const procparams::VignettingParams& vignetting, double &w2, double &h2, double& maxRadius, double &v, double &b, double &mul);
static void rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings, bool multithread);
void transformLuminanceOnly(Imagefloat* original, Imagefloat* transformed, int cx, int cy, int oW, int oH, int fW, int fH);
void transformGeneral(bool highQuality, Imagefloat *original, Imagefloat *transformed, int cx, int cy, int sx, int sy, int oW, int oH, int fW, int fH, const LensCorrection *pLCPMap, bool useOriginalBuffer);
@@ -497,6 +498,7 @@ enum class BlurType {
Image8* lab2rgb(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true);
void rgb2lab(const Image8 &src, int x, int y, int w, int h, float L[], float a[], float b[], const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true) const;
static void rgb2lab(std::uint8_t red, std::uint8_t green, std::uint8_t blue, float &L, float &a, float &b, const procparams::ColorManagementParams &icm, bool consider_histogram_settings = true);
Imagefloat* lab2rgbOut(LabImage* lab, int cx, int cy, int cw, int ch, const procparams::ColorManagementParams &icm);
// CieImage *ciec;
void workingtrc(const Imagefloat* src, Imagefloat* dst, int cw, int ch, int mul, Glib::ustring &profile, double gampos, double slpos, int &illum, int prim, cmsHTRANSFORM &transform, bool normalizeIn = true, bool normalizeOut = true, bool keepTransForm = false) const;