You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
184 lines
6.5 KiB
184 lines
6.5 KiB
/*M/////////////////////////////////////////////////////////////////////////////////////// |
|
// |
|
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. |
|
// |
|
// By downloading, copying, installing or using the software you agree to this license. |
|
// If you do not agree to this license, do not download, install, |
|
// copy or use the software. |
|
// |
|
// |
|
// License Agreement |
|
// For Open Source Computer Vision Library |
|
// |
|
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved. |
|
// Copyright (C) 2009, Willow Garage Inc., all rights reserved. |
|
// Third party copyrights are property of their respective owners. |
|
// |
|
// Redistribution and use in source and binary forms, with or without modification, |
|
// are permitted provided that the following conditions are met: |
|
// |
|
// * Redistribution's of source code must retain the above copyright notice, |
|
// this list of conditions and the following disclaimer. |
|
// |
|
// * Redistribution's in binary form must reproduce the above copyright notice, |
|
// this list of conditions and the following disclaimer in the documentation |
|
// and/or other materials provided with the distribution. |
|
// |
|
// * The name of the copyright holders may not be used to endorse or promote products |
|
// derived from this software without specific prior written permission. |
|
// |
|
// This software is provided by the copyright holders and contributors "as is" and |
|
// any express or implied warranties, including, but not limited to, the implied |
|
// warranties of merchantability and fitness for a particular purpose are disclaimed. |
|
// In no event shall the Intel Corporation or contributors be liable for any direct, |
|
// indirect, incidental, special, exemplary, or consequential damages |
|
// (including, but not limited to, procurement of substitute goods or services; |
|
// loss of use, data, or profits; or business interruption) however caused |
|
// and on any theory of liability, whether in contract, strict liability, |
|
// or tort (including negligence or otherwise) arising in any way out of |
|
// the use of this software, even if advised of the possibility of such damage. |
|
// |
|
//M*/ |
|
|
|
#ifndef OPENCV_STITCHING_BLENDERS_HPP |
|
#define OPENCV_STITCHING_BLENDERS_HPP |
|
|
|
#if defined(NO) |
|
# warning Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers. |
|
#endif |
|
|
|
#include "opencv2/core.hpp" |
|
#include "opencv2/core/cuda.hpp" |
|
|
|
namespace cv { |
|
namespace detail { |
|
|
|
//! @addtogroup stitching_blend |
|
//! @{ |
|
|
|
/** @brief Base class for all blenders. |
|
|
|
Simple blender which puts one image over another |
|
*/ |
|
class CV_EXPORTS Blender |
|
{ |
|
public: |
|
virtual ~Blender() {} |
|
|
|
enum { NO, FEATHER, MULTI_BAND }; |
|
static Ptr<Blender> createDefault(int type, bool try_gpu = false); |
|
|
|
/** @brief Prepares the blender for blending. |
|
|
|
@param corners Source images top-left corners |
|
@param sizes Source image sizes |
|
*/ |
|
void prepare(const std::vector<Point> &corners, const std::vector<Size> &sizes); |
|
/** @overload */ |
|
virtual void prepare(Rect dst_roi); |
|
/** @brief Processes the image. |
|
|
|
@param img Source image |
|
@param mask Source image mask |
|
@param tl Source image top-left corners |
|
*/ |
|
virtual void feed(InputArray img, InputArray mask, Point tl); |
|
/** @brief Blends and returns the final pano. |
|
|
|
@param dst Final pano |
|
@param dst_mask Final pano mask |
|
*/ |
|
virtual void blend(InputOutputArray dst, InputOutputArray dst_mask); |
|
|
|
protected: |
|
UMat dst_, dst_mask_; |
|
Rect dst_roi_; |
|
}; |
|
|
|
/** @brief Simple blender which mixes images at its borders. |
|
*/ |
|
class CV_EXPORTS FeatherBlender : public Blender |
|
{ |
|
public: |
|
FeatherBlender(float sharpness = 0.02f); |
|
|
|
float sharpness() const { return sharpness_; } |
|
void setSharpness(float val) { sharpness_ = val; } |
|
|
|
void prepare(Rect dst_roi) CV_OVERRIDE; |
|
void feed(InputArray img, InputArray mask, Point tl) CV_OVERRIDE; |
|
void blend(InputOutputArray dst, InputOutputArray dst_mask) CV_OVERRIDE; |
|
|
|
//! Creates weight maps for fixed set of source images by their masks and top-left corners. |
|
//! Final image can be obtained by simple weighting of the source images. |
|
Rect createWeightMaps(const std::vector<UMat> &masks, const std::vector<Point> &corners, |
|
std::vector<UMat> &weight_maps); |
|
|
|
private: |
|
float sharpness_; |
|
UMat weight_map_; |
|
UMat dst_weight_map_; |
|
}; |
|
|
|
inline FeatherBlender::FeatherBlender(float _sharpness) { setSharpness(_sharpness); } |
|
|
|
/** @brief Blender which uses multi-band blending algorithm (see @cite BA83). |
|
*/ |
|
class CV_EXPORTS MultiBandBlender : public Blender |
|
{ |
|
public: |
|
MultiBandBlender(int try_gpu = false, int num_bands = 5, int weight_type = CV_32F); |
|
|
|
int numBands() const { return actual_num_bands_; } |
|
void setNumBands(int val) { actual_num_bands_ = val; } |
|
|
|
void prepare(Rect dst_roi) CV_OVERRIDE; |
|
void feed(InputArray img, InputArray mask, Point tl) CV_OVERRIDE; |
|
void blend(InputOutputArray dst, InputOutputArray dst_mask) CV_OVERRIDE; |
|
|
|
private: |
|
int actual_num_bands_, num_bands_; |
|
std::vector<UMat> dst_pyr_laplace_; |
|
std::vector<UMat> dst_band_weights_; |
|
Rect dst_roi_final_; |
|
bool can_use_gpu_; |
|
int weight_type_; //CV_32F or CV_16S |
|
#if defined(HAVE_OPENCV_CUDAARITHM) && defined(HAVE_OPENCV_CUDAWARPING) |
|
std::vector<cuda::GpuMat> gpu_dst_pyr_laplace_; |
|
std::vector<cuda::GpuMat> gpu_dst_band_weights_; |
|
std::vector<Point> gpu_tl_points_; |
|
std::vector<cuda::GpuMat> gpu_imgs_with_border_; |
|
std::vector<std::vector<cuda::GpuMat> > gpu_weight_pyr_gauss_vec_; |
|
std::vector<std::vector<cuda::GpuMat> > gpu_src_pyr_laplace_vec_; |
|
std::vector<std::vector<cuda::GpuMat> > gpu_ups_; |
|
cuda::GpuMat gpu_dst_mask_; |
|
cuda::GpuMat gpu_mask_; |
|
cuda::GpuMat gpu_img_; |
|
cuda::GpuMat gpu_weight_map_; |
|
cuda::GpuMat gpu_add_mask_; |
|
int gpu_feed_idx_; |
|
bool gpu_initialized_; |
|
#endif |
|
}; |
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////// |
|
// Auxiliary functions |
|
|
|
void CV_EXPORTS normalizeUsingWeightMap(InputArray weight, InputOutputArray src); |
|
|
|
void CV_EXPORTS createWeightMap(InputArray mask, float sharpness, InputOutputArray weight); |
|
|
|
void CV_EXPORTS createLaplacePyr(InputArray img, int num_levels, std::vector<UMat>& pyr); |
|
void CV_EXPORTS createLaplacePyrGpu(InputArray img, int num_levels, std::vector<UMat>& pyr); |
|
|
|
// Restores source image |
|
void CV_EXPORTS restoreImageFromLaplacePyr(std::vector<UMat>& pyr); |
|
void CV_EXPORTS restoreImageFromLaplacePyrGpu(std::vector<UMat>& pyr); |
|
|
|
//! @} |
|
|
|
} // namespace detail |
|
} // namespace cv |
|
|
|
#endif // OPENCV_STITCHING_BLENDERS_HPP
|
|
|