text: /*
    Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization
    dedicated to making software imaging solutions freely available.
    
    You may not use this file except in compliance with the License.
    obtain a copy of the License at
    
      http://www.imagemagick.org/script/license.php
    
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
  
    MagickCore statistical methods.
  */
  #ifndef MAGICKCORE_STATISTIC_H
  #define MAGICKCORE_STATISTIC_H
  
  #if defined(__cplusplus) || defined(c_plusplus)
  extern "C" {
  #endif
  
  #define MaximumNumberOfImageMoments  8
  #define MaximumNumberOfPerceptualColorspaces  6
  #define MaximumNumberOfPerceptualHashes  7
  
  typedef struct _ChannelStatistics
  {
    size_t
      depth;
  
    double
      area,
      minima,
      maxima,
      sum,
      sum_squared,
      sum_cubed,
      sum_fourth_power,
      mean,
      variance,
      standard_deviation,
      kurtosis,
      skewness,
      entropy;
  } ChannelStatistics;
  
  typedef struct _ChannelMoments
  {
    double
      invariant[MaximumNumberOfImageMoments+1];
  
    PointInfo
      centroid,
      ellipse_axis;
  
    double
      ellipse_angle,
      ellipse_eccentricity,
      ellipse_intensity;
  } ChannelMoments;
  
  typedef struct _ChannelPerceptualHash
  {
    double
      srgb_hu_phash[MaximumNumberOfImageMoments+1],
      hclp_hu_phash[MaximumNumberOfImageMoments+1];
  
    size_t
      number_colorspaces;
  
    ColorspaceType
      colorspace[MaximumNumberOfPerceptualColorspaces+1];
  
    double
      phash[MaximumNumberOfPerceptualColorspaces+1][MaximumNumberOfImageMoments+1];
  
    size_t
      number_channels;
  } ChannelPerceptualHash;
  
  typedef enum
  {
    UndefinedEvaluateOperator,
    AbsEvaluateOperator,
    AddEvaluateOperator,
    AddModulusEvaluateOperator,
    AndEvaluateOperator,
    CosineEvaluateOperator,
    DivideEvaluateOperator,
    ExponentialEvaluateOperator,
    GaussianNoiseEvaluateOperator,
    ImpulseNoiseEvaluateOperator,
    LaplacianNoiseEvaluateOperator,
    LeftShiftEvaluateOperator,
    LogEvaluateOperator,
    MaxEvaluateOperator,
    MeanEvaluateOperator,
    MedianEvaluateOperator,
    MinEvaluateOperator,
    MultiplicativeNoiseEvaluateOperator,
    MultiplyEvaluateOperator,
    OrEvaluateOperator,
    PoissonNoiseEvaluateOperator,
    PowEvaluateOperator,
    RightShiftEvaluateOperator,
    RootMeanSquareEvaluateOperator,
    SetEvaluateOperator,
    SineEvaluateOperator,
    SubtractEvaluateOperator,
    SumEvaluateOperator,
    ThresholdBlackEvaluateOperator,
    ThresholdEvaluateOperator,
    ThresholdWhiteEvaluateOperator,
    UniformNoiseEvaluateOperator,
    XorEvaluateOperator
  } MagickEvaluateOperator;
  
  typedef enum
  {
    UndefinedFunction,
    ArcsinFunction,
    ArctanFunction,
    PolynomialFunction,
    SinusoidFunction
  } MagickFunction;
  
  typedef enum
  {
    UndefinedStatistic,
    GradientStatistic,
    MaximumStatistic,
    MeanStatistic,
    MedianStatistic,
    MinimumStatistic,
    ModeStatistic,
    NonpeakStatistic,
    RootMeanSquareStatistic,
    StandardDeviationStatistic
  } StatisticType;
  
  extern MagickExport ChannelStatistics
    *GetImageStatistics(const Image *,ExceptionInfo *);
  
  extern MagickExport ChannelMoments
    *GetImageMoments(const Image *,ExceptionInfo *);
  
  extern MagickExport ChannelPerceptualHash
    *GetImagePerceptualHash(const Image *,ExceptionInfo *);
  
  extern MagickExport Image
    *EvaluateImages(const Image *,const MagickEvaluateOperator,ExceptionInfo *),
    *PolynomialImage(const Image *,const size_t,const double *,ExceptionInfo *),
    *StatisticImage(const Image *,const StatisticType,const size_t,const size_t,
      ExceptionInfo *);
  
  extern MagickExport MagickBooleanType
    EvaluateImage(Image *,const MagickEvaluateOperator,const double,
      ExceptionInfo *),
    FunctionImage(Image *,const MagickFunction,const size_t,const double *,
      ExceptionInfo *),
    GetImageEntropy(const Image *,double *,ExceptionInfo *),
    GetImageExtrema(const Image *,size_t *,size_t *,ExceptionInfo *),
    GetImageMean(const Image *,double *,double *,ExceptionInfo *),
    GetImageKurtosis(const Image *,double *,double *,ExceptionInfo *),
    GetImageRange(const Image *,double *,double *,ExceptionInfo *);
  
  #if defined(__cplusplus) || defined(c_plusplus)
  }
  #endif
  
  #endif
  