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SharpenImage
Header: | AVL.h |
---|---|
Namespace: | avl |
Enhances contrast of an image so that it appears sharper.
Applications: Use this filter only to improve human perception, not to preprocess an image for analysis.
Syntax
void avl::SharpenImage ( const avl::Image& inImage, float inContrastFactor, avl::KernelShape::Type inKernel, int inRadiusX, atl::Optional<int> inRadiusY, avl::Image& outImage )
Parameters
Name | Type | Range | Default | Description | |
---|---|---|---|---|---|
inImage | const Image& | Input image | |||
inContrastFactor | float | 0.0 - | 1.0f | Value representing the strength of the contrast enhancement | |
inKernel | KernelShape::Type | Kernel shape | |||
inRadiusX | int | 0 - | 1 | Nearly half of the kernel's width (2*R+1) | |
inRadiusY | Optional<int> | 0 - | NIL | Nearly half of the kernel's height (2*R+1), or same as inRadiusX | |
outImage | Image& | Output image |
Description
This filter increases the contrast of the image by multiplying by inContrastFactor the difference between a pixel value and its corresponding pixel value in the smoothed input image:
\[ \begin{aligned} outImage[i,j] &= inImage[i,j] + inContrastFactor \times (inImage[i,j] - smoothedImage[i,j]) \\ \end{aligned} \]Examples
Hardware Acceleration
This operation supports automatic parallelization for multicore and multiprocessor systems.
This operation is optimized for SSE41 technology for pixels of type: UINT8.
This operation is optimized for AVX2 technology for pixels of type: UINT8.
This operation is optimized for NEON technology for pixels of type: UINT8.
This operation supports automatic parallelization for multicore and multiprocessor systems.