lowpass

lowpass ( integer Input, integer Output, integer Size )

Use this function to apply the lowpass filter to an image or selection. The filter replaces the target pixel with the mean value in its neighborhood, thus eliminating high-frequency information. As a result, the image gets blurred and the noise suppressed.

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 neighborhood in which the averaging will be performed. 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 statement performs lowpass filtration of image 1 using the window of size 7:

lowpass (1,1,7)