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Reverts the pixel value range (unsigned) or applies numeric negation (signed).


void avl::NegateImage
	const avl::Image& inImage,
	atl::Optional<const avl::Region&> inRoi,
	avl::Image& outImage


Name Type Default Description
inImage const Image& Input image
inRoi Optional<const Region&> NIL Range of pixels to be processed
outImage Image& Output image


The operation negates the pixel values of the inImage. Depending on the pixel type, the negation is defines as follows:

  • For the signed pixel types: \forall_{i,j} \text{\textbf{OutImage} }_{i,j} = -\text{\textbf{InImage} }_{i,j}
  • For the unsigned pixel types: \forall_{i,j} \text{\textbf{OutImage} }_{i,j} =  \text{\textbf{MaximalValue} } - \text{\textbf{InImage} }_{i,j} (which can be thought of as mirroring the pixel values around the center of the pixel values range)


The NegateImage performed on the sample image.

In-place Processing

This function supports in-place data processing - you can pass the same reference to inImage and outImage

Hardware Acceleration

This operation is optimized for SSE2 technology for pixels of types: UINT8, SINT8, SINT16, REAL.

This operation supports automatic parallelization for multicore and multiprocessor systems.