vpImgproc.h

/*
 * ViSP, open source Visual Servoing Platform software.
 * Copyright (C) 2005 - 2023 by Inria. All rights reserved.
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See https://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Static functions for basic image processing functions.
 */
 
#ifndef _vpImgproc_h_
#define _vpImgproc_h_
 
#include <visp3/core/vpConfig.h>
#include <visp3/core/vpImage.h>
#include <visp3/core/vpImageMorphology.h>
#include <visp3/imgproc/vpContours.h>
 
#define USE_OLD_FILL_HOLE 0
 
namespace vp
{
enum RETINEX_LEVEL
{
  RETINEX_UNIFORM = 0, 
  RETINEX_LOW = 1, 
  RETINEX_HIGH = 2 
};
 
typedef enum
{
  AUTO_THRESHOLD_HUANG,      
  AUTO_THRESHOLD_INTERMODES, 
  AUTO_THRESHOLD_ISODATA,    
  AUTO_THRESHOLD_MEAN,       
  AUTO_THRESHOLD_OTSU,       
  AUTO_THRESHOLD_TRIANGLE    
} vpAutoThresholdMethod;
 
typedef enum vpGammaMethod
{
  GAMMA_MANUAL = 0, 
  GAMMA_LOG_BASED = 1, 
  GAMMA_NONLINEAR_BASED = 2, 
  GAMMA_CDF_BASED = 3, 
  GAMMA_CLASSIFICATION_BASED = 4, 
  GAMMA_SPATIAL_VARIANT_BASED = 5,  
  GAMMA_METHOD_COUNT = 6
} vpGammaMethod;
 
VISP_EXPORT std::string vpGammaMethodList(const std::string &pref = "<", const std::string &sep = " , ",
                                            const std::string &suf = ">");
 
VISP_EXPORT std::string vpGammaMethodToString(const vpGammaMethod &type);
 
VISP_EXPORT vpGammaMethod vpGammaMethodFromString(const std::string &name);
 
typedef enum vpGammaColorHandling
{
  GAMMA_RGB = 0, 
  GAMMA_HSV = 1, 
  GAMMA_COLOR_HANDLING_COUNT = 2
} vpGammaColorHandling;
 
VISP_EXPORT std::string vpGammaColorHandlingList(const std::string &pref = "<", const std::string &sep = " , ",
                                            const std::string &suf = ">");
 
VISP_EXPORT std::string vpGammaColorHandlingToString(const vpGammaColorHandling &type);
 
VISP_EXPORT vpGammaColorHandling vpGammaColorHandlingFromString(const std::string &name);
 
VISP_EXPORT void adjust(vpImage<unsigned char> &I, double alpha, double beta);
 
VISP_EXPORT void adjust(const vpImage<unsigned char> &I1, vpImage<unsigned char> &I2, double alpha, double beta);
 
VISP_EXPORT void adjust(vpImage<vpRGBa> &I, const double alpha, double beta);
 
VISP_EXPORT void adjust(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2, double alpha, double beta);
 
VISP_EXPORT void clahe(const vpImage<unsigned char> &I1, vpImage<unsigned char> &I2, int blockRadius = 150,
                       int bins = 256, float slope = 3.0f, bool fast = true);
 
VISP_EXPORT void clahe(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2, int blockRadius = 150, int bins = 256,
                       float slope = 3.0f, bool fast = true);
 
VISP_EXPORT void equalizeHistogram(vpImage<unsigned char> &I, const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void equalizeHistogram(const vpImage<unsigned char> &I1, vpImage<unsigned char> &I2,
                                   const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void equalizeHistogram(vpImage<vpRGBa> &I, bool useHSV = false);
 
VISP_EXPORT void equalizeHistogram(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2, bool useHSV = false);
 
VISP_EXPORT void gammaCorrection(vpImage<unsigned char> &I, const float &gamma, const vpGammaMethod &method = vp::GAMMA_MANUAL,
                                 const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void gammaCorrection(const vpImage<unsigned char> &I1, vpImage<unsigned char> &I2, const float &gamma,
                                 const vpGammaMethod &method = vp::GAMMA_MANUAL, const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void gammaCorrection(vpImage<vpRGBa> &I, const float &gamma, const vpGammaColorHandling &colorHandling = vp::GAMMA_RGB,
                                 const vpGammaMethod &method = vp::GAMMA_MANUAL, const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void gammaCorrection(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2, const float &gamma,
                                 const vpGammaColorHandling &colorHandling = vp::GAMMA_RGB,
                                 const vpGammaMethod &method = vp::GAMMA_MANUAL, const vpImage<bool> *p_mask = nullptr);
 
VISP_EXPORT void retinex(vpImage<vpRGBa> &I, int scale = 240, int scaleDiv = 3, int level = RETINEX_UNIFORM,
                         double dynamic = 1.2, int kernelSize = -1);
 
VISP_EXPORT void retinex(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2, int scale = 240, int scaleDiv = 3,
                         int level = RETINEX_UNIFORM, double dynamic = 1.2, int kernelSize = -1);
 
VISP_EXPORT void stretchContrast(vpImage<unsigned char> &I);
 
VISP_EXPORT void stretchContrast(const vpImage<unsigned char> &I1, vpImage<unsigned char> &I2);
 
VISP_EXPORT void stretchContrast(vpImage<vpRGBa> &I);
 
VISP_EXPORT void stretchContrast(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2);
 
VISP_EXPORT void stretchContrastHSV(vpImage<vpRGBa> &I);
 
VISP_EXPORT void stretchContrastHSV(const vpImage<vpRGBa> &I1, vpImage<vpRGBa> &I2);
 
VISP_EXPORT void unsharpMask(vpImage<unsigned char> &I, float sigma, double weight = 0.6);
 
VISP_EXPORT void unsharpMask(const vpImage<unsigned char> &I, vpImage<unsigned char> &Ires, float sigma,
                             double weight = 0.6);
 
VISP_EXPORT void unsharpMask(vpImage<vpRGBa> &I, float sigma, double weight = 0.6);
 
VISP_EXPORT void unsharpMask(const vpImage<vpRGBa> &I, vpImage<vpRGBa> &Ires, float sigma, double weight = 0.6);
 
VISP_EXPORT void connectedComponents(const vpImage<unsigned char> &I, vpImage<int> &labels, int &nbComponents,
                                     const vpImageMorphology::vpConnexityType &connexity = vpImageMorphology::CONNEXITY_4);
 
VISP_EXPORT void fillHoles(vpImage<unsigned char> &I
#if USE_OLD_FILL_HOLE
                           ,
                           const vpImageMorphology::vpConnexityType &connexity = vpImageMorphology::CONNEXITY_4
#endif
);
 
VISP_EXPORT void floodFill(vpImage<unsigned char> &I, const vpImagePoint &seedPoint, const unsigned char oldValue,
                           const unsigned char newValue,
                           const vpImageMorphology::vpConnexityType &connexity = vpImageMorphology::CONNEXITY_4);
 
VISP_EXPORT void reconstruct(const vpImage<unsigned char> &marker, const vpImage<unsigned char> &mask,
                             vpImage<unsigned char> &h_kp1 /*alias I */,
                             const vpImageMorphology::vpConnexityType &connexity = vpImageMorphology::CONNEXITY_4);
 
VISP_EXPORT unsigned char autoThreshold(vpImage<unsigned char> &I, const vp::vpAutoThresholdMethod &method,
                                        const unsigned char backgroundValue = 0,
                                        const unsigned char foregroundValue = 255);
} // namespace vp
 
#endif