UnsharpHQ

Abstract
Author	list
Version	v0.5
Download	UnsharpHQ_v05.zip
Category	Sharpeners
License	GPLv3

Description

This is a very strong and fast unsharp mask with some new features.

Requirements

- AviSynth 2.5.8 or later

- Progressive input only

- Supported color formats: YV12

- SSE2 capable CPU

- MSVCR80.DLL

Syntax and Parameters

UnsharpHQ (clip, int "THRESHOLD", float "SHARPSTR", float "SMOOTH", bool "SHOW")

int  THRESHOLD = 20

Range: 0 to 99

The value that determines whether or not to sharpen a pixel based on the luminance change between their neighbors.

Lower values allow more to be sharpened (including noise); higher values allow less but is set to high, small detail will not be sharpened.

float  SHARPSTR = 4.0

Range: 0.0 up to 99.0

Sharpening strength; values from 2.0 to 10.0 are recommended.

float  SMOOTH = 0.5

Range: 0.0 - 4.0

The smoothing strength for pixels not being sharpened (mainly flat areas). Set to 0.0 to disable smoothing.

bool  SHOW = false

When set to true a green and black mask is shown; useful for finding an optimal value* for THRESHOLD.

Anything in green gets sharpened, anything in black is not sharpened but can be smoothed if SMOOTH is greater than 0.

*optimal value - noise vs detail trade-off. The goal is to try to sharpen as much detail as possible while not sharpening noise.

Examples

UnsharpHQ with default settings:

AviSource("Blah.avi")
UnsharpHQ(THRESHOLD=20, SHARPSTR=4.0, SMOOTH=0.5, SHOW=false)

Changelog

Version      Date            Changes

v0.5         2014/01/19      - Released source code under GPLv3
                             - Added parameters THRESHOLD, SMOOTH, and SHOW
                             - Renamed parameter STR to SHARPSTR

v0.4         2011/02/26      - Optimized and more accurate v0.3

v0.3         2011/02/21      - Initial public release

External Links

• Doom9 Forum - UnsharpHQ discussion.
• Archive.org - Archived download.

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