median

median ( integer Input, integer Output, integer Size )

Use this function to apply the median filter to an image or selection. The median filter replaces the target pixel with the median value in its neighborhood. As a result, the impulse noise on an image gets reduced without degrading edges or intensity gradients

Parameters

Input

An integer between 0 and 116 specifying the input image frame number. A value of 0 represents the DMA memory buffer of the video device. Values in the range of 100-116 correspond to hidden frames.

Output

An integer between 1 and 116 specifying the output image frame number. Values in the range of 100-116 correspond to hidden frames.

Size

An odd integer between 1 and 2*Overscan+1 specifying the size of the square kernel used for calculating the median. The Overscan setting is defined in ImageWarp Preferences.

Error flags

ERR_OK

The flag set if successful.

ERR_FAILED

The flag set if failed.

Example

This set of statements applies an impulse noise to a sample image and then suppresses the noise using the median filtration.

setCurDir("samples")

loadIm (1,"sample14.iwd")

genImpulse (1,1,50)

median (1,1,3)