ImageUtils.h

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/* XBoost: Ada-Boost and Friends on Haar/ICF/HOG Features, Library and ToolBox
 *
 * Copyright (c) 2008-2014 Paolo Medici <medici@ce.unipr.it>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef _IMAGE_UTILS_H
#define _IMAGE_UTILS_H

#include "Image.h"
#include "Types.h"
#include "IntegralImage.h"

class ImageResampler {
  IntegralImage<uint32_t> img;
public:
  ImageResampler();
  ~ImageResampler();
  
  void ImportImage(const ImageHandle & in);
  void ExportImage(ImageHandle & out, const rect & area);
  void ExportImage(ImageHandle & out);
};

void Convert(ImageHandle & out, const ImageHandle & in);

void Resample(ImageHandle & out, const ImageHandle & in, const rect & area);

void BilinearResample(ImageHandle & out, const ImageHandle & in, const rect & area);

void DrawRect(ImageHandle & out, rect r, unsigned int color);

void DrawBox(ImageHandle & out, rect r, unsigned int color);

void BlendBox(ImageHandle & out, rect r, unsigned int color, float factor);

void Downsample2X(ImageHandle & out, const ImageHandle & in);

void Downsample1_5X(ImageHandle & out, const ImageHandle & in);

void Downsample2X(ImageHandle & out, const ImageHandle & in, const rect & area);

#endif