SmoothUV

Abstract

• YV12 Colorspace

Functions

— SmoothUV
- SSHiQ

Syntax

1) SSHiQ(clip, int rY, int rC, int tY, int tC, int str, bool HQY, bool HQC, bool field)

• rY and rC are respectively the radii for luminance and chrominance (how far from the current pixel neighbours are used). The greater the more smooth.
• tY and tC are thresholds (details sensibility). The greater the more smooth (not exactly the same as fpr other SSHiQ filters).
• str is the strength (only used in HiQ mode), ie how much of the smoothed version should be used at best for calculating the new pixel
• HQY and HQC tell whether to use the HiQ mode, where the edge information automatically reduce the strength value.
  (HQ == 0) ? smoothed_pixel : ( (strength-edge)*smoothed_pixel + (256-(strength-edge))*pixel_in )/256
• field allows you to process independently fields (risks of worse blurring/color bleeding)

2) SmoothUV (used to reduce rainbows, as done by smartsmoothIQ)
SmoothUV (clip, int radius, int threshold, bool field)

• radius is the range of operation
• threshold is the one used in smartsmoothIQ
• field is the same as above

This filter doesn't process the luma at all, and can be seen as a shorter version of SSHiQ(rY, radius, -1, threshold, 255, false, false, field)

$Date: 2004/08/17 20:31:19 $