FFTQuiver

Abstract
Author	V.C.Mohan
Version	1.0.0.0.0
Download	2.5.8 versionFFTQuiver 2.6.0 alpha5 version URL -->FFTQuiver
Category	External filters
License	GPLv2
Discussion	[ Announced FFTQuiver plugin]

Description

Regular periodic noise is filtered in 1D frequency domain by F1Quiver and in 2D frequency domain by F2Quiver functions of this plugin and a full description is at click me.

Requirements

• AviSynth 2.5.8 or 2.6.0 Alpha 5 or greater
• Supported color formats: YUY2, YV12, *YV16, *YV24, *YV411, *Y8

* Not available in AviSynth 2.5.8.

• libfftw3f-3.dll or fftw3-3.dll

"F1Quiver", "ci*[custom]b[test]b[row]i[erow]i[gamma]f[morph]b";
"F2Quiver", "ci*[test]b[morph]b[rescale]b[gamma]f[mfact]i[frad]i";

Syntax and Parameters

FnQuiver (clip, int array "", bool "test", bool "morph ",float gamma",Effect_specific_parameters")

clip   =

Input clip.

  int array = none

Array of integer sets specifying frequency domain filters .May not specify for test mode.

test  bool = false

If true display power spectrum and designed filters .

morph  bool = false

Is homomorphic filtering intended? .

gamma  float = 0.05

scaling for spectral display .

refer_specific_function  * = ?

See detailed description of functions.

Examples

## This is some example code to remove noise from an image.
imagereader("C:\avi_plugins\varianslim\theoin.jpg", end = 10)
converttoyv16()
f1=F1Quiver(last, test = true)
f1a=F1Quiver (37,100,38,0,40,0, 44,100,test =true,row = 155, erow=250,custom = true,gamma =0.2 ) 
#F1Quiver(5,39,200,1,test = true, gamma = 0.2)
stackHorizontal(f1,f1a)

F2 example

# test with no filter
f2t1=f2Quiver(test = true)
#Following demonstrates filters that can be designed
#F2Quiver(5,5,60,-35,20,1,2,120,60,8,4,1,70,80,4,3,4,40,42,18,test = true,gamma=0.04)
f2t=F2Quiver(3,4,35,44,12,test = true)
# process
f2=F2Quiver(3,4,35,44,12)
#f2=F2Quiver(4,4,38,42,18,test = true,morph =false,gamma=0.04)

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