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SharpenImage

Basic

Module: FoundationLite

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.
Name Type Range Description
Input value
 inImage Image Input image
Input value
 inContrastFactor Real 0.0 - Value representing the strength of the contrast enhancement
Input value
 inKernel KernelShape Kernel shape
Input value
 inRadiusX Integer 0 - Nearly half of the kernel's width (2*R+1)
Input value
 inRadiusY Integer* 0 - Nearly half of the kernel's height (2*R+1), or same as inRadiusX
Output value
 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

SharpenImage run on example image with inContrastFactor = 2.

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.

Complexity Level

This filter is available on Basic Complexity Level.