Image_Shifting.s File Reference

Functions
ComplexImage	IPUImageShift (Image imgSrc, Number fShiftX, Number fShiftY, Image imgDst)
	Translate Image using FFT.

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Detailed Description

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Function Documentation

ComplexImage IPUImageShift	(	Image	imgSrc,
		Number	fShiftX,
		Number	fShiftY,
		Image	imgDst
	)

Translate Image using FFT.

Parameters:

	imgSrc	Source image
	fShiftX	X shift
	fShiftY	Y shift
	imgDst	Destination image (can be NULL, or imgSrc for in-place calculation)

Returns:

imgDst

This function shifts an image using the shift theorem of Fourier Transform. Thus, you can specify sub-pixel numbers to fShiftX and fShiftY.
If imgDst is allocated, this function put a result to it. Otherwise, this function allocates a new destination area and returns the result on it.

Example:

Image img := GetFrontImage().ImageClone();

img.ConvertToFloat();

// translate (X, Y) = (10.5, 3)
IPUImageShift(img, 10.5, 3, img);

img.ShowImage();