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0001 0002 /* 0003 Copyright (c) 2003-2007 Clarence Dang <dang@kde.org> 0004 Copyright (c) 2006 Mike Gashler <gashlerm@yahoo.com> 0005 All rights reserved. 0006 0007 Redistribution and use in source and binary forms, with or without 0008 modification, are permitted provided that the following conditions 0009 are met: 0010 0011 1. Redistributions of source code must retain the above copyright 0012 notice, this list of conditions and the following disclaimer. 0013 2. Redistributions in binary form must reproduce the above copyright 0014 notice, this list of conditions and the following disclaimer in the 0015 documentation and/or other materials provided with the distribution. 0016 0017 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 0018 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 0019 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 0020 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 0021 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 0022 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 0023 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 0024 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 0025 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 0026 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0027 */ 0028 0029 0030 #ifndef kpEffectToneEnhance_H 0031 #define kpEffectToneEnhance_H 0032 0033 0034 #include "imagelib/kpImage.h" 0035 0036 0037 // 0038 // Histogram Equalizer effect. 0039 // 0040 // It just divides out the color histogram from the pixel values. (So if 0041 // you plot the color histogram after equalizing, you should get a nearly 0042 // flat/uniform distribution.) 0043 // 0044 // The two sliders adjust: 0045 // 0046 // 1. The extent to which it equalizes 0047 // 2. The local-ness of the equalization. (In other words, it computes just 0048 // the histogram of the regions near the pixel it is adjusting.) 0049 // 0050 // ASSUMPTION: The given <image> is not paletted (currently, this is the 0051 // same as the screen mode not being paletted). 0052 // 0053 class kpEffectToneEnhance 0054 { 0055 public: 0056 static kpImage applyEffect (const kpImage &image, 0057 double granularity, double amount); 0058 }; 0059 0060 0061 #endif // kpEffectToneEnhance_H