Amp

Abstract
Author	wonkey_monkey
Version	2014-12-20
Download	amp.zip
Category	Debug filter
License
Discussion	Doom9 Thread

Description

Amp performs temporal smoothing, then (optionally) enhances the difference between the windowed average and the current frame. It was inspired by RgbAmplifier.

In theory, this should let you do things like make pulses visible in videos of human faces or wrists, but I suspect you need a very low noise video to pick that up.

Requirements

• [x86]: AviSynth+ or AviSynth 2.6
• Supported color formats: RGB24, RGB32, YUY2, YV12

Syntax and Parameters

amp (clip, int "window", float "y", float "u", float "v", float "a")

clip   =

Input clip.

int  window = 0

The number of frames either side of the current one used for the temporal smoothing, i.e. a value of 5 will smooth over 5*2+1=11 frames.

float  y = -1.0

float  u =

float  v =

float  a =

For YV12/YUY2 colour spaces, the parameters y u v specify the level of enhancement for each channel. a is ignored.

For RGB24/RGB32 colour spaces, the parameters y u v [a] specify the level of enhancement for the channels r g b [a].

A value of 0 performs no enhancement (returns the unaltered channel of the source frame).

If you only specify y, the same value will be used for the other channels.

By not specifying any of these four parameters (or giving them the value of -1) the filter acts purely as a temporal smoother.

Examples

amp with default settings:

AviSource("Blah.avi")
amp()

Changelog

Version      Date            Changes

20141220     2014/12/20      - Initial release

Archived Downloads

Version	Download	Mirror
2014-12-20	amp.zip	amp.zip

External Links

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