ImageBuilder.h

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/******************************************************************************
 * Copyright (c) 2012, 2013 All Rights Reserved, http://www.optris.de         *                                                                          *
 *  Optris GmbH                                                               *
 *  Ferdinand-Buisson-Str. 14                                                 *
 *  13127 Berlin                                                              *
 *  Germany                                                                   *
 *                                                                            *
 * Contributors:                                                              *
 * - Linux platform development in cooperation with Nuremberg Institute of    *
 *   Technology Georg Simon Ohm, http//www.th-nuernberg.de                    *
 * - Linux 64-Bit platform supported by Fraunhofer IPA,                       *
 *   http://www.ipa.fraunhofer.de                                             *
 *****************************************************************************/

#ifndef OPTRISIMAGEBUILDER_H
#define OPTRISIMAGEBUILDER_H

namespace optris
{

struct ExtremalRegion
{
  float t;
  int u1;
  int v1;
  int u2;
  int v2;
};

enum EnumOptrisColoringPalette{eAlarmBlue   = 1,
                                                           eAlarmBlueHi = 2,
                                                           eGrayBW      = 3,
                                                           eGrayWB      = 4,
                                                           eAlarmGreen  = 5,
                                                           eIron        = 6,
                                                           eIronHi      = 7,
                                                           eMedical     = 8,
                                                           eRainbow     = 9,
                                                           eRainbowHi   = 10,
                                                           eAlarmRed    = 11};

enum EnumOptrisPaletteScalingMethod{eManual = 1,
                                                                        eMinMax = 2,
                                                                        eSigma1 = 3,
                                                                        eSigma3 = 4};

typedef unsigned char (*paletteTable)[3];

class ImageBuilder
{
public:
        ImageBuilder(bool alignStride=true);

  ~ImageBuilder();

  void setData(unsigned int width, unsigned int height, unsigned short* data);

  unsigned int getWidth();

  unsigned int getHeight();

  float getTemperatureAt(int index);

  float getTemperatureAt(int u, int v);

  float getMeanTemperature(int u1, int v1, int u2, int v2);

  void getMinMaxRegion(int radius, ExtremalRegion* minRegion, ExtremalRegion* maxRegion);

  void setManualTemperatureRange(float min, float max);

  float getIsothermalMin();

  float getIsothermalMax();

  void setPaletteScalingMethod(EnumOptrisPaletteScalingMethod method);

  EnumOptrisPaletteScalingMethod getPaletteScalingMethod();

  unsigned int getStride(void);

  void setPalette(EnumOptrisColoringPalette palette);

  EnumOptrisColoringPalette getPalette();

  void getPaletteTable(paletteTable& table);

  void fillPaletteLookup(unsigned int lut[65536]);

  void convertTemperatureToPaletteImage(unsigned char* dst, bool ignoreStride=false);

  void convertTemperatureToPaletteImage(unsigned int lut[65536], unsigned char* dst);

  void calcHistogram(unsigned int* hist, unsigned int histsize, int tMin, int tMax);

  void drawCrosshair(unsigned char* img, unsigned int x, unsigned int y, unsigned channels=3);

  void yuv422torgb24(const unsigned char* src, unsigned char* dst, unsigned int w, unsigned int h);

private:

  void calculateIntegralImage();

  void calcMinMaxScalingFactor();

  void calcSigmaScalingFactor(float sigma);

  unsigned short* _data;

  unsigned long* _integral;

  EnumOptrisPaletteScalingMethod _scalingMethod;

  unsigned short _min;

  unsigned short _max;

  unsigned int _width;

  unsigned int _height;

  unsigned int  _stride;

  unsigned int _size;

  EnumOptrisColoringPalette _palette;

  bool _alignStride;

  bool _integralIsDirty;
};

}

#endif //OPTRISIMAGEBUILDER_H