Public Member Functions
int	calcHaar (ImageData const imageData, SignatureData const sigData)

	Calculator ()

void	transform (ImageData *const data)

	~Calculator ()

Constructor & Destructor Documentation

◆ Calculator()

Digikam::Haar::Calculator::Calculator ( )

explicit

◆ ~Calculator()

Digikam::Haar::Calculator::~Calculator ( )

Member Function Documentation

◆ calcHaar()

int Digikam::Haar::Calculator::calcHaar	(	ImageData *const	data,
		SignatureData *const	sigData
	)

Determines a total of NUM_COEFS positions in the image that have the largest magnitude (absolute value) in color value. Returns linearized coordinates in sig1, sig2, and sig3. avgl are the [0,0] values. The order of occurrence of the coordinates in sig doesn't matter. Complexity is 3 x NUM_PIXELS^2 x 2log(NUM_COEFS).

References Digikam::Haar::SignatureData::avg, Digikam::Haar::ImageData::data1, Digikam::Haar::ImageData::data2, Digikam::Haar::ImageData::data3, and Digikam::Haar::SignatureData::sig.

Referenced by Digikam::HaarIface::bestMatchesForImageWithThreshold(), and Digikam::HaarIface::signatureAsText().

◆ transform()

void Digikam::Haar::Calculator::transform ( ImageData *const data )

Do the Haar tensorial 2d transform itself. Here input is RGB data [0..255] in Unit arrays. Results are available in a, b, and c. Fully inplace calculation; order of result is interleaved though, but we don't care about that.

References Digikam::Haar::ImageData::data1, Digikam::Haar::ImageData::data2, Digikam::Haar::ImageData::data3, I, and Digikam::Haar::NumberOfPixelsSquared.