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lensmetadata: add abstract center radius helper class

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Add a CenterRadiusMetadataLensCorrection helper class that will be
implemented by vendor specific corrections based on center radius.
This commit is contained in:
Simone Gotti
2024-06-13 20:23:25 +02:00
parent 2b97de233f
commit f64ad13363
2 changed files with 150 additions and 0 deletions
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42
rtengine/lensmetadata.h
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@@ -37,6 +37,48 @@ public:
virtual void initCorrections(int width, int height, const procparams::CoarseTransformParams &coarse, int rawRotationDeg) = 0;
};
/* CenterRadiusMetadataLensCorrection is an abstract class the extends MetadataLensCorrection to easily handle center radius based corrections */
class CenterRadiusMetadataLensCorrection : public MetadataLensCorrection
{
public:
CenterRadiusMetadataLensCorrection(const FramesMetaData *meta);
void process(double &x, double &y, int cx, int cy, int channel, bool dist, bool ca) const;
void correctDistortionAndCA(double &x, double &y, int cx, int cy, int channel) const override;
void correctDistortion(double &x, double &y, int cx, int cy) const override;
void correctCA(double &x, double &y, int cx, int cy, int channel) const override;
void processVignette(int width, int height, float **rawData) const override;
void processVignette3Channels(int width, int height, float **rawData) const override;
void processVignetteNChannels(int width, int height, float **rawData, int channels) const;
void initCorrections(int width, int height, const procparams::CoarseTransformParams &coarse, int rawRotationDeg) override;
/* Implementers should implement the below methods */
virtual bool hasDistortionCorrection() const override = 0;
virtual bool hasCACorrection() const override = 0;
virtual bool hasVignettingCorrection() const override = 0;
/* These methods should return the distortion correction factor (cf) for the
* provided radius rout (radius of the output image (corrected)).
* So rin = rout * cf
* */
virtual double distortionCorrectionFactor(double rout) const = 0;
virtual double caCorrectionFactor(double rout, int channel) const = 0;
virtual double distortionAndCACorrectionFactor(double rout, int channel) const = 0;
/* This methods should return the vignetting correction factor (cf) for the
* provided radius */
virtual double vignettingCorrectionFactor(double r) const = 0;
protected:
bool swap_xy;
double w2;
double h2;
double rf;
Exiv2Metadata metadata;
};
/* MetadataLensCorrectionFinder tries to find and return MetadataLensCorrection for the provided metadata */
class MetadataLensCorrectionFinder
{