2.6.6.4 imgGaussian

1 Menu Information
2 Brief Information
3 Command Line Usage
4 X-Function Execution Options
5 Variables
6 Description
7 Examples
8 Algorithm
9 References
10 Related X-Functions

Menu Information

Gaussian

Brief Information

Apply Gaussian filter to image

Command Line Usage

1. imgGaussian r:=20 img:=mat(1) oimg:=mat(2);

2. imgGaussian r:=10 oimg:=<new>;

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

Display
Name

Variable
Name

I/O
and
Type

Default
Value

Description

Radius

Input

int

Specifies the size of the neighborhood on which the Gaussian filter is applied. This value cannot be less than 1.

Input Matrix

img

Input

Image

Specifies the source image to be manipulated. The default input is the active image.

Output Image

oimg

Output

Image

<input>

Specifies the output image. By default, the output image is the same as the input image.

See the syntax here.

Description

The imgGussian function applies a Gaussian filter to the input image. The filtered image is blurred and looks smoother than the input image.

User can specify the radius of the filtering neighborhood. Generally speaking, a larger radius will result in a smoother image compared to a smaller radius.

Examples

In this example, we use the imgGaussian function to blur the input image:

When the image is active, select Image: Spatial Filters: Gaussian to open the dialog of the X-Function.
In the dialog, change the settings as the screenshot below and click OK to close the dialog.

A new image is created. It is the filtered image.


The original image	The output image

Algorithm

The computation uses L_GaussianFilterBitmap() function from LEADTOOLS Main API. Please refer to the LEADTOOLS Main API Help file, Version 14 and read the L_GaussianFilterBitmap topic.