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‎LICENSE

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Simplified BSD License
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http://www.opensource.org/licenses/bsd-license.html
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Copyright (c) 2010-2011, Pascal Getreuer
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.

‎README.md

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% IPOL.IM Tools Image Interpolation.
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# ABOUT
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* Author : Pascal Getreuer <[email protected]>
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* Copyright : (C) 2010-2012 IPOL Image Processing On Line http://www.ipol.im/
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* Licence : BSD
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* Latest version available at: https://github.com/zvezdochiot/iminterp
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# OVERVIEW
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This source code provides an implementation of the "Image Interpolation"
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described in the IPOL article: http://www.ipol.im/
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# UNIX/LINUX/MAC USER GUIDE
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The code is compilable on Unix/Linux and Mac OS.
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- Compilation.
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Automated compilation requires the make.
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- Dependencies.
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This code requires the libipoliio (https://github.com/zvezdochiot/libipoliio), libfftw3f.
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- Image formats.
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Only the BMP, PNG, JPEG, and TIFF (float) formats are supported.
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-------------------------------------------------------------------------
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Usage:
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1. Download the code package and extract it. Go to that directory.
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2. Compile the source code (on Unix/Linux/Mac OS).
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make;
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# ABOUT THIS FILE
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This program is free software: you can use, modify and/or
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redistribute it under the terms of the simplified BSD License. You
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should have received a copy of this license along this program. If
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not, see <http://www.opensource.org/licenses/bsd-license.html>.

‎VERSION

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0.20130707

‎man/man1/imintace.1

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.\"Text automatically generated by txt2man
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.TH iminterp "20130706" "1" ""
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.RS
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ACE automatic color enhancement, P. Getreuer 2012
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Using OpenMP with 4 threads
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.PP
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Syntax: imintace [options] <input file> <output file>
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.PP
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Only BMP/JPEG/PNG/TIFF images are supported.
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.PP
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Options:
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.RS
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.TP
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.B
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\fB-a\fP <number>
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alpha, stronger implies stronger enhancement
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.TP
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.B
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\fB-w\fP <omega>
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omega, spatial weighting function, choices are
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.RS
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.TP
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.B
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1/r
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default ACE, \fBomega\fP(x,y) = \fB1/sqrt\fP(x^2+y^2)
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.TP
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.B
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1
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constant, \fBomega\fP(x,y) = 1
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.TP
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.B
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G:#
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Gaussian, where # specifies sigma,
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\fBomega\fP(x,y) = \fBexp\fP(-(x^2+y^2)/(2 sigma^2))
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.RE
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.TP
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.B
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\fB-m\fP <method>
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method to use for fast computation, choices are
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interp:# interpolate \fBs_a\fP(L - \fBI\fP(x)) with # levels
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.RS
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.TP
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.B
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poly:#
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polynomial s_a with degree #
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.RE
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.TP
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.B
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\fB-q\fP <number>
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quality for saving JPEG images (0 to 100)
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.RE
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.PP
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Example:
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imintace \fB-a\fP 5 \fB-w\fP 1/r \fB-m\fP interp:12 input.bmp output.bmp
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.SH "SEE ALSO"
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imintace(1), imintblur(1), imintcoarsen(1), imintdiff(1), imintdmbilinear(1), imintdmcswl1(1), iminterpcw(1), iminterpl(1), iminterpnn(1), iminterps(1), iminterptd(1), imintgaussianbench(1), imintgaussianconv(1), imintgenmstencil(1), iminthisteq(1), imintmaskapply(1), imintmaskrand(1), imintmosaic(1), imintnoise(1), iminttvdeconv(1), iminttvdenoise(1), iminttvinpaint(1).
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.PP

‎man/man1/imintblur.1

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.\"Text automatically generated by txt2man
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.TH iminterp "20130706" "1" ""
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.RS
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Image blurring utility, P. Getreuer 2011-2012
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.PP
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Usage: imintblur [param:value \.\.\.] input output
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.PP
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where "input" and "output" are BMP/JPEG/PNG/TIFF files.
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.PP
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Parameters
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.RS
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.TP
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.B
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K:<kernel>
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blur kernel for deconvolution
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.RS
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.TP
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.B
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K:disk:<radius>
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filled disk kernel
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.TP
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.B
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K:gaussian:<sigma>
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Gaussian kernel
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.TP
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.B
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K:<file>
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read kernel from text or image file
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.RE
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.TP
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.B
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noise:<model>:<sigma>
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simulate noise with standard deviation sigma
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.RS
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.TP
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.B
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noise:gaussian:<sigma>
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additive white Gaussian noise
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.TP
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.B
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noise:laplace:<sigma>
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Laplace noise
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.TP
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.B
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noise:poisson:<sigma>
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Poisson noise
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.RE
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.TP
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.B
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f:<file>
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input file (alternative syntax)
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.TP
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.B
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u:<file>
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output file (alternative syntax)
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.TP
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.B
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jpegquality:<number>
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quality for saving JPEG images (0 to 100)
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.RE
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.PP
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Example:
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imintblur noise:gaussian:5 K:disk:2 input.bmp blurry.bmp
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.SH "SEE ALSO"
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imintace(1), imintblur(1), imintcoarsen(1), imintdiff(1), imintdmbilinear(1), imintdmcswl1(1), iminterpcw(1), iminterpl(1), iminterpnn(1), iminterps(1), iminterptd(1), imintgaussianbench(1), imintgaussianconv(1), imintgenmstencil(1), iminthisteq(1), imintmaskapply(1), imintmaskrand(1), imintmosaic(1), imintnoise(1), iminttvdeconv(1), iminttvdenoise(1), iminttvinpaint(1).
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.PP

‎man/man1/imintcoarsen.1

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.\"Text automatically generated by txt2man
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.TH iminterp "20130706" "1" ""
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.RS
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Image coarsening utility, P. Getreuer 2010-2011
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.PP
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Usage: imintcoarsen [options] <input file> <output file>
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.PP
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Only BMP/JPEG/PNG/TIFF images are supported.
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.PP
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Options:
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.RS
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.TP
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.B
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\fB-x\fP <number>
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the coarsening factor (>= 1.0, may be non-integer)
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.TP
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.B
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\fB-p\fP <number>
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sigma_h, blur size of the Gaussian point spread
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function in units of output pixels.
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.TP
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.B
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\fB-b\fP <ext>
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boundary handling extension, choices for <ext> are
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.RS
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.TP
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.B
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const
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constant extension
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.TP
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.B
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hsym
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half-sample symmetric (default)
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.TP
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.B
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wsym
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whole-sample symmetric
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.TP
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.B
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per
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periodic
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.RE
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.TP
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.B
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\fB-g\fP <grid>
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grid to use for resampling, choices for <grid> are
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.RS
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.TP
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.B
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centered
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grid with centered alignment (default)
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.TP
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.B
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topleft
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the top-left anchored grid
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.RE
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.TP
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.B
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\fB-q\fP <number>
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quality for saving JPEG images (0 to 100)
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.RE
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.PP
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Example: coarsen by factor 2.5
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imintcoarsen \fB-x\fP 2.5 \fB-p\fP 0.35 frog.bmp coarse.bmp
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.SH "SEE ALSO"
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imintace(1), imintblur(1), imintcoarsen(1), imintdiff(1), imintdmbilinear(1), imintdmcswl1(1), iminterpcw(1), iminterpl(1), iminterpnn(1), iminterps(1), iminterptd(1), imintgaussianbench(1), imintgaussianconv(1), imintgenmstencil(1), iminthisteq(1), imintmaskapply(1), imintmaskrand(1), imintmosaic(1), imintnoise(1), iminttvdeconv(1), iminttvdenoise(1), iminttvinpaint(1).
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.PP

‎man/man1/imintdiff.1

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.\"Text automatically generated by txt2man
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.TH iminterp "20130706" "1" ""
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.RS
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Image difference calculator, P. Getreuer 2010-2011
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.PP
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Usage: imintdiff [options] <exact file> <distorted file>
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Only BMP/JPEG/PNG/TIFF images are supported.
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.PP
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Options:
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.RS
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.TP
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.B
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\fB-m\fP <metric>
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Metric to use for comparison, choices are
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.RS
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.TP
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.B
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max
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Maximum absolute difference, max_n |A_n - B_n|
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.TP
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.B
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mse
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Mean squared error, 1/N sum |A_n - B_n|^2
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.TP
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.B
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rmse
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Root mean squared error, (MSE)^1/2
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.TP
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.B
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psnr
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Peak signal-to-noise ratio, \fB-10\fP \fBlog10\fP(MSE/255^2)
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.TP
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.B
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mssim
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Mean structural similarity index
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.RE
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.TP
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.B
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\fB-s\fP
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Compute metric separately for each channel
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.TP
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.B
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\fB-p\fP <pad>
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Remove a margin of <pad> pixels before comparison
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.TP
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.B
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\fB-D\fP <number>
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D parameter for difference image
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.TP
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.B
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\fB-q\fP <number>
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Quality for saving JPEG images (0 to 100)
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.RE
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.PP
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Alternatively, a difference image is generated by the syntax
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imintdiff [\fB-D\fP <number>] <exact file> <distorted file> <output file>
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.PP
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The difference image is computed as
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D_n = 255/D (A_n - B_n) + 255/2.
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Values outside of the range [0,255] are saturated.
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.PP
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Example:
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imintdiff \fB-mpsnr\fP frog-exact.png frog-4x.png
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.SH "SEE ALSO"
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imintace(1), imintblur(1), imintcoarsen(1), imintdiff(1), imintdmbilinear(1), imintdmcswl1(1), iminterpcw(1), iminterpl(1), iminterpnn(1), iminterps(1), iminterptd(1), imintgaussianbench(1), imintgaussianconv(1), imintgenmstencil(1), iminthisteq(1), imintmaskapply(1), imintmaskrand(1), imintmosaic(1), imintnoise(1), iminttvdeconv(1), iminttvdenoise(1), iminttvinpaint(1).
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.PP

‎man/man1/imintdmbilinear.1

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.\"Text automatically generated by txt2man
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.TH iminterp "20130706" "1" ""
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.RS
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Bilinear demosaicing demo, P. Getreuer 2010-2011
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.PP
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Usage: imintdmbilinear [options] <input file> <output file>
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Only BMP/JPEG/PNG/TIFF images are supported.
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.PP
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Options:
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.RS
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.TP
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.B
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\fB-p\fP <pattern>
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CFA pattern, choices for <pattern> are
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.RS
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.TP
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.B
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RGGB
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upperleftmost red pixel is at (0,0)
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.TP
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.B
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GRBG
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upperleftmost red pixel is at (1,0)
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.TP
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.B
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GBRG
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upperleftmost red pixel is at (0,1)
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.TP
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.B
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BGGR
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upperleftmost red pixel is at (1,1)
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.RE
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.TP
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.B
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\fB-q\fP <number>
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Quality for saving JPEG images (0 to 100)
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.RE
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.PP
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Example:
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imintdmbilinear \fB-p\fP RGGB frog.bmp frog-dm.bmp
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.SH "SEE ALSO"
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imintace(1), imintblur(1), imintcoarsen(1), imintdiff(1), imintdmbilinear(1), imintdmcswl1(1), iminterpcw(1), iminterpl(1), iminterpnn(1), iminterps(1), iminterptd(1), imintgaussianbench(1), imintgaussianconv(1), imintgenmstencil(1), iminthisteq(1), imintmaskapply(1), imintmaskrand(1), imintmosaic(1), imintnoise(1), iminttvdeconv(1), iminttvdenoise(1), iminttvinpaint(1).
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.PP

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