Doom9's Forum - View Single Post - s_ExLogo v1.1 Logo Removal

StainlessS · 13th May 2010, 23:26

Code:

#------------------------------------------------------------------------
# s_ExLogo() v1.1, De-logo Function, With Clipping
# by StainlessS
#
# http://forum.doom9.org/showthread.php?t=154559
#------------------------------------------------------------------------
# History:
#
# v1.0 Initial release, featuring Lousy coordinate calculations.
# v1.1 15 Sept 2010: Fixed haphazard coord calcs + lots of other alterations.
# More like what v1.0 should have been, with more rigorous error checking and reporting.
# SPow now 2.2 by default as in pre-release v0.0
#------------------------------------------------------------------------
#
# ("s_" Just Means Script Function)
#
# Filter requirements:- NONE (Tested only on Avisynth v2.5.8 and v2.6)
#
# Based on Dekafka (YUY2 Only)
#
# HHHHHH s_Exlogo, samples above and below (shown left as 'H')
# VLLLLLLV and combines them into a horizontal bar.
# VLLLLLLV Samples left and right and combines them into a vertical bar (show as 'V'.
# VLLLLLLV Logo area shown as 'L'.
# VLLLLLLV These bars may or may not be blurred, and are then resized to fit
# HHHHHH the logo area. The resized bars are then mixed together based
# on arg "Spow" and the ratio of length of Vertical bars to length
# of horizontal bars. Finally, the resultant de-logo'd area is
# Layer'ed onto the clip using the Amount arg.
# Clipping can be set so as to avoid eg sampling letterboxing when
# blurring out the logo (would normally result in nasty black
# block instead of a nasty logo).
#
# Basic usage:-
# s_ExLogo(clip, int LogoX, int LogoY, int LogoW, Int LogoH)
#
# LogoX,LogoY,LogoW,LogoH, position of logo, width and height (Compulsory args)
# LogoX, LogoY, Sets upper left position of logo rectangle.
# LogoW, LogoH, Width and height of Logo rectangle,
# Zero and -ve, values can be used, relative to the width and height,
# (as used in crop)
# s_ExLogo(Last,680,520,-4,-4) would set logo area to (680,520,36,52)
# on a 720x576 clip.
# LogoX and LogoW should be in even numbers only (YUY2).
#
# Optional args
# int LogoMode, 0-4, Default 2.
# 0 = Show LOGO position by dimmed rectangle. (initial logo setup)
# 1 = Show PATCH (CLIPPED logo) position & Clipping. NON CLIPPED area shown in GREEN.
# Clipping setup, Used AFTER LogoMode=0 (Initial Logo Setup).
# 2 = Normal, Default.
# 3 = Keep Chroma (delogo Luma only)
# 4 = Keep Luma (delogo Chroma only)
#
# int BlurMode, 0-6, Default 4, Sets Both HBlur and VBlur as below.
# 0 = 0.0, Off, No Blurring, BilinearResize only. (maybe subtitles)
# 1 = 0.2
# 2 = 0.33
# 3 = 0.5
# 4 = 1.0 Default
# 5 = 1.58 Maximum possible
# 6= 1.0 User Defined. (defaults to 1.0 here, as HBlur & VBlur, default 1.0)
#
# int HBlur, Int VBlur, Default 1.0
# Set by BlurMode or user defined if BlurMode = 6.
# HBlur controls amount of Horizontal blurring in Vertical bars.
# VBlur controls amount of Vertical blurring in Horizontal bars.
#
# int ClipX, ClipY,ClipW,ClipH, Clipping rectangle, All default 0
# As used in crop.
# ClipX, ClipY, Sets upper left position of clipping rectangle.
# ClipW, ClipH, Width and height of clipping rectangle,
# Zero and -ve, values can be used, relative to the clip width and height.
# The defaults (0) sets ClipW to Width and ClipH to Height.
# In Normal usage, (no borders/letterboxing), not used at all.
# Sometimes (black borders) rarely more than 1 of these Clip? args
# and never more than 2 will be set.
# ClipX and ClipW should be in even numbers only (YUY2).
#
# float spow, 1.0 to 150.0, Default 2.2
# When mixing blurred horizontal and vertical bars either side, top and bottom,
# of a logo, this arg controls the mix. When spow==1.0, the bars with the
# longest sides are given precedence weighted by how long they are compared
# to the other bars. If the vertical bars either side of the logo are eg
# 100 pixels tall and the horizontal bars are 50, then the vertical bars
# are mixed with 2:1 the strength of the horizontal bars, ie 66%, (about
# 170 for argument to Layer(), 256*0.66). Dekafka would have given this
# example a strength of 255, close to 100% (255/256). Strangely, if lengths
# were swapped about, it would have gotten a strength of 64, = 25%. s_ExLogo
# is symetrical, whereas Dekafka is not.
#
# Based on the above example where vertical bars are twice as long as the
# horizontal bars:-
# spow V_Strength% Layer_arg ratio
# 1.0 66% 170 2:1 (Linear)
# 1.6 75% 191 3:1
# 2.2 80% 205 4:1 (Default)
# 2.8 83% 213 5:1
# 3.3 86% 219 6:1
# 4.0 88% 224 7:1
# 4.6 89% 228 8:1
# 5.0 90% 230 9:1
# 5.7 91% 233 10:1
# 143.0 99.6 255 255:1
#
#
# As you can see, the above spow Default is 2.2, with a ratio of 4:1
# meaning that if the vertical bars are twice as long as the horizontal ones,
# they acquire a strength of 80%, 4:1 as opposed to 2:1 when linear spow of 1.0
# is used.
# Using spow=143.0 (or anywhere close) pretty much switches OFF the shortest side
# which may have application. Anything else above about 5.7 is unlikely to be of
# any great use. The spow arg does NOT produce miracles, but is something else
# to play with if you get bored.
# In this version, the default spow has reverted back to the original test value
# of 2.2 (was 1.6 in first release). spow really is just an externally adjustable
# default value, meant for testing and not really intended to be changed, suggest
# that if you dont like the default setting, that you manually change it in the
# source instead of submitting an spow arg every time its used.
#
# int Mix, -1 to 256, default -1 (Use SPow)
# Overrides Spow calculations for controlling mixing of vertical and horizontal
# bars based on vertical : horizontal ratio.
# Sets the argument passed to 'Layer()" directly, eg 256 uses ALL of the vertical
# bars and NONE of the horizontal, 128 does a 50/50 mix and 0 uses only
# horizontal bars. For one-off adjustments, may be best to use Mix instead
# of using the spow arg.
#
# int Amount, 0-256, Default 252, How much of blurred de-logo is used.
# This controls how much of the blurred de-logo put together by spow (or Mix, above)
# is finally combined with the original clip to replace the logo area.
#
#------------------------------------------------------------------------
# X-Coords should be in even numbers only (YUY2).
# -------
# IN-USE:
# Position logo using LogoMode=0 (Ignores clipping in this mode).
# Displays Logo area as a "dimmed" rectangle. MUST SET LOGO IN THIS MODE 1st.
# If borders/letterboxing, then:
# Switch to LogoMode=1,
# Shows Patch (CLIPPED logo) position & Clipping. NON CLIPPED area shown in GREEN.
# NOTE, the Logo rectangle (patch) will have been clipped in this mode and any
# that has been clipped out will NOT be hi-lited. Changed NON Clipped color
# in v1.1 from Pink to GREEN. I'm sure that a better (more intuitive) method for
# clipped hi-liting could be found, but this is the easy way, and I'm basically lazy.
# When coords of Logo and optional clipping set then:
# Switch to LogoMode=2, Normal usage. (LogoMode 3 and 4, may also have application)
# -------
# CLIPPING:
# If you have a standard set of LOGO coords for a particular station logo then
# you would use these LOGO coords whether or not there are any borders/letterboxing.
# You would only use the CLIP coords if borders/letterboxing, LOGO coords are NOT
# changed. The only Clipping coords that need be set, are the ones where the
# borders are, so if eg:
# Video clip has eg letter boxing top and bottom, and logo is in top left, then:
# Use LogoMode=1, to set only "ClipY", in this case ClipY should be the coord
# of the topmost logo pixel that does NOT contain any border.
# When set correctly, switch to LogoMode=2 (default use).
# Blurred de-logo data is (in this case) taken only from left, right and bottom
# of logo patch area. (Patch area = clipped LOGO area).
# -------
# SOME USAGE EXAMPLES, TO SHOW YOU WHAT TO EXPECT with LogoModes 0 and 1.
#
# s_ExLogo(20,20,100,100,LogoMode=0) # Logo Top LHS, No clipping, Show Logo
# s_ExLogo(20,20,100,100,ClipY=70,LogoMode=1) # Logo Top LHS, Top HALF LOGO Clipped, Show Logo/Clipping
#
# s_ExLogo(0,12,-0,40,LogoMode=0) # Full width scrolling logo, No clipping, Show Logo
# s_ExLogo(0,12,-0,40,ClipY=32,logomode=1) # Full width scrolling logo, Top HALF LOGO Clipped, Show Logo/Clipping
# -------
# LASTLY, Have had pretty impressive results using this as a post processor to AvsInpaint with low setting
# for amount and FFT3DFilter doing a further little bit of smoothing on a cropped area slightly larger
# than the patch area. (AvsInpaint using InPaintFunc.avs by Reuf Toc). AvsInpaint, can be a little on the slow
# side, but whilst you are waiting, you could always spend your time wisely, perhaps; write a good book.
#------------------------------------------------------------------------

Find v1.1 s_ExLogo update here:

Also, if comments/complaints, post here.

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