Back to FabImage Library website
You are here: Start » Function Reference » Image » Image Local Transforms » SmoothImage_Deriche
Header: | FIL.h |
---|---|
Namespace: | fil |
Module: | FoundationLite |
Smooths an image using Deriche filter.
Applications: Approximation of the gaussian filter, which can be faster for large kernels.
Syntax
C++
C#
void fil::SmoothImage_Deriche ( const fil::Image& inImage, ftl::Optional<const fil::Region&> inRoi, const float inAlphaX, ftl::Optional<float> inAlphaY, fil::Image& outImage )
Parameters
Name | Type | Range | Default | Description | |
---|---|---|---|---|---|
![]() |
inImage | const Image& | Input image | ||
![]() |
inRoi | Optional<const Region&> | NIL | Range of output pixels to be computed | |
![]() |
inAlphaX | const float | 0.001 - ![]() |
0.5f | Horizontal coefficient |
![]() |
inAlphaY | Optional<float> | 0.001 - ![]() |
NIL | Vertical coefficient |
![]() |
outImage | Image& | Output image |
Hints
- To make smoothing stronger, decrease the inAlphaX and - optionally - inAlphaY.
- If the smoothing kernel is not very big, it is recommended to use SmoothImage_Gauss instead.
Examples
![]() |
![]() |
SmoothImage_Deriche performed on a sample image with inAlphaX = 0.5.
Hardware Acceleration
This operation supports automatic parallelization for multicore and multiprocessor systems.
Errors
List of possible exceptions:
Error type | Description |
---|---|
DomainError | Region exceeds an input image in SmoothImage_Deriche. |