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/*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) 2015, OpenCV Foundation, 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*/
/*#ifdef __OPENCV_BUILD
#error this is a compatibility header which should not be used inside the OpenCV library
#endif*/
#include "opencv2/structured_light/structured_light.hpp"
#include "opencv2/structured_light/graycodepattern.hpp"
#include "opencv2/structured_light/sinusoidalpattern.hpp"
/** @defgroup structured_light Structured Light API
Structured light is considered one of the most effective techniques to acquire 3D models.
This technique is based on projecting a light pattern and capturing the illuminated scene
from one or more points of view. Since the pattern is coded, correspondences between image
points and points of the projected pattern can be quickly found and 3D information easily
retrieved.
One of the most commonly exploited coding strategies is based on trmatime-multiplexing. In this
case, a set of patterns are successively projected onto the measuring surface.
The codeword for a given pixel is usually formed by the sequence of illuminance values for that
pixel across the projected patterns. Thus, the codification is called temporal because the bits
of the codewords are multiplexed in time @cite pattern .
In this module a time-multiplexing coding strategy based on Gray encoding is implemented following the
(stereo) approach described in 3DUNDERWORLD algorithm @cite UNDERWORLD .
For more details, see @ref tutorial_structured_light.
*/
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/*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) 2015, OpenCV Foundation, 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_GRAY_CODE_PATTERN_HPP__
#define __OPENCV_GRAY_CODE_PATTERN_HPP__
#include "opencv2/core.hpp"
#include "opencv2/structured_light/structured_light.hpp"
namespace cv {
namespace structured_light {
//! @addtogroup structured_light
//! @{
/** @brief Class implementing the Gray-code pattern, based on @cite UNDERWORLD.
*
* The generation of the pattern images is performed with Gray encoding using the traditional white and black colors.
*
* The information about the two image axes x, y is encoded separately into two different pattern sequences.
* A projector P with resolution (P_res_x, P_res_y) will result in Ncols = log 2 (P_res_x) encoded pattern images representing the columns, and
* in Nrows = log 2 (P_res_y) encoded pattern images representing the rows.
* For example a projector with resolution 1024x768 will result in Ncols = 10 and Nrows = 10.
* However, the generated pattern sequence consists of both regular color and color-inverted images: inverted pattern images are images
* with the same structure as the original but with inverted colors.
* This provides an effective method for easily determining the intensity value of each pixel when it is lit (highest value) and
* when it is not lit (lowest value). So for a a projector with resolution 1024x768, the number of pattern images will be Ncols * 2 + Nrows * 2 = 40.
*
*/
class CV_EXPORTS_W GrayCodePattern : public StructuredLightPattern
{
public:
/** @brief Parameters of StructuredLightPattern constructor.
* @param width Projector's width. Default value is 1024.
* @param height Projector's height. Default value is 768.
*/
struct CV_EXPORTS Params
{
Params();
int width;
int height;
};
/** @brief Constructor
@param parameters GrayCodePattern parameters GrayCodePattern::Params: the width and the height of the projector.
*/
static Ptr<GrayCodePattern> create( const GrayCodePattern::Params &parameters = GrayCodePattern::Params() );
// alias for scripting
CV_WRAP
static Ptr<GrayCodePattern> create( int width, int height );
/** @brief Get the number of pattern images needed for the graycode pattern.
*
* @return The number of pattern images needed for the graycode pattern.
*
*/
CV_WRAP
virtual size_t getNumberOfPatternImages() const = 0;
/** @brief Sets the value for white threshold, needed for decoding.
*
* White threshold is a number between 0-255 that represents the minimum brightness difference required for valid pixels, between the graycode pattern and its inverse images; used in getProjPixel method.
*
* @param value The desired white threshold value.
*
*/
CV_WRAP
virtual void setWhiteThreshold( size_t value ) = 0;
/** @brief Sets the value for black threshold, needed for decoding (shadowsmasks computation).
*
* Black threshold is a number between 0-255 that represents the minimum brightness difference required for valid pixels, between the fully illuminated (white) and the not illuminated images (black); used in computeShadowMasks method.
*
* @param value The desired black threshold value.
*
*/
CV_WRAP
virtual void setBlackThreshold( size_t value ) = 0;
/** @brief Generates the all-black and all-white images needed for shadowMasks computation.
*
* To identify shadow regions, the regions of two images where the pixels are not lit by projector's light and thus where there is not coded information,
* the 3DUNDERWORLD algorithm computes a shadow mask for the two cameras views, starting from a white and a black images captured by each camera.
* This method generates these two additional images to project.
*
* @param blackImage The generated all-black CV_8U image, at projector's resolution.
* @param whiteImage The generated all-white CV_8U image, at projector's resolution.
*/
CV_WRAP
virtual void getImagesForShadowMasks( InputOutputArray blackImage, InputOutputArray whiteImage ) const = 0;
/** @brief For a (x,y) pixel of a camera returns the corresponding projector pixel.
*
* The function decodes each pixel in the pattern images acquired by a camera into their corresponding decimal numbers representing the projector's column and row,
* providing a mapping between camera's and projector's pixel.
*
* @param patternImages The pattern images acquired by the camera, stored in a grayscale vector < Mat >.
* @param x x coordinate of the image pixel.
* @param y y coordinate of the image pixel.
* @param projPix Projector's pixel corresponding to the camera's pixel: projPix.x and projPix.y are the image coordinates of the projector's pixel corresponding to the pixel being decoded in a camera.
*/
CV_WRAP
virtual bool getProjPixel( InputArrayOfArrays patternImages, int x, int y, CV_OUT Point &projPix ) const = 0;
};
//! @}
}
}
#endif
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/*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) 2015, OpenCV Foundation, 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_SINUSOIDAL_PATTERN_HPP__
#define __OPENCV_SINUSOIDAL_PATTERN_HPP__
#include "opencv2/core.hpp"
#include "opencv2/imgproc.hpp"
#include "opencv2/structured_light/structured_light.hpp"
#include <opencv2/phase_unwrapping.hpp>
#include <opencv2/geometry.hpp>
namespace cv {
namespace structured_light {
//! @addtogroup structured_light
//! @{
//! Type of sinusoidal pattern profilometry methods.
enum{
FTP = 0,
PSP = 1,
FAPS = 2
};
/**
* @brief Class implementing Fourier transform profilometry (FTP) , phase-shifting profilometry (PSP)
* and Fourier-assisted phase-shifting profilometry (FAPS) based on @cite faps.
* This class generates sinusoidal patterns that can be used with FTP, PSP and FAPS.
*/
class CV_EXPORTS_W SinusoidalPattern : public StructuredLightPattern
{
public:
/**
* @brief Parameters of SinusoidalPattern constructor
* @param width Projector's width.
* @param height Projector's height.
* @param nbrOfPeriods Number of period along the patterns direction.
* @param shiftValue Phase shift between two consecutive patterns.
* @param methodId Allow to choose between FTP, PSP and FAPS.
* @param nbrOfPixelsBetweenMarkers Number of pixels between two consecutive markers on the same row.
* @param setMarkers Allow to set markers on the patterns.
* @param markersLocation vector used to store markers location on the patterns.
*/
struct CV_EXPORTS_W Params
{
CV_WRAP Params();
CV_PROP_RW int width;
CV_PROP_RW int height;
CV_PROP_RW int nbrOfPeriods;
CV_PROP_RW float shiftValue;
CV_PROP_RW int methodId;
CV_PROP_RW int nbrOfPixelsBetweenMarkers;
CV_PROP_RW bool horizontal;
CV_PROP_RW bool setMarkers;
std::vector<Point2f> markersLocation;
};
/**
* @brief Constructor.
* @param parameters SinusoidalPattern parameters SinusoidalPattern::Params: width, height of the projector and patterns parameters.
*
*/
CV_WRAP static Ptr<SinusoidalPattern> create( Ptr<SinusoidalPattern::Params> parameters =
makePtr<SinusoidalPattern::Params>() );
/**
* @brief Compute a wrapped phase map from sinusoidal patterns.
* @param patternImages Input data to compute the wrapped phase map.
* @param wrappedPhaseMap Wrapped phase map obtained through one of the three methods.
* @param shadowMask Mask used to discard shadow regions.
* @param fundamental Fundamental matrix used to compute epipolar lines and ease the matching step.
*/
CV_WRAP
virtual void computePhaseMap( InputArrayOfArrays patternImages,
OutputArray wrappedPhaseMap,
OutputArray shadowMask = noArray(),
InputArray fundamental = noArray()) = 0;
/**
* @brief Unwrap the wrapped phase map to remove phase ambiguities.
* @param wrappedPhaseMap The wrapped phase map computed from the pattern.
* @param unwrappedPhaseMap The unwrapped phase map used to find correspondences between the two devices.
* @param camSize Resolution of the camera.
* @param shadowMask Mask used to discard shadow regions.
*/
CV_WRAP
virtual void unwrapPhaseMap( InputArray wrappedPhaseMap,
OutputArray unwrappedPhaseMap,
cv::Size camSize,
InputArray shadowMask = noArray() ) = 0;
/**
* @brief Find correspondences between the two devices thanks to unwrapped phase maps.
* @param projUnwrappedPhaseMap Projector's unwrapped phase map.
* @param camUnwrappedPhaseMap Camera's unwrapped phase map.
* @param matches Images used to display correspondences map.
*/
CV_WRAP
virtual void findProCamMatches( InputArray projUnwrappedPhaseMap, InputArray camUnwrappedPhaseMap,
OutputArrayOfArrays matches ) = 0;
/**
* @brief compute the data modulation term.
* @param patternImages captured images with projected patterns.
* @param dataModulationTerm Mat where the data modulation term is saved.
* @param shadowMask Mask used to discard shadow regions.
*/
CV_WRAP
virtual void computeDataModulationTerm( InputArrayOfArrays patternImages,
OutputArray dataModulationTerm,
InputArray shadowMask ) = 0;
};
//! @}
}
}
#endif
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/*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) 2015, OpenCV Foundation, 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_STRUCTURED_LIGHT_HPP__
#define __OPENCV_STRUCTURED_LIGHT_HPP__
#include "opencv2/core.hpp"
namespace cv {
namespace structured_light {
//! @addtogroup structured_light
//! @{
//! Type of the decoding algorithm
// other algorithms can be implemented
enum
{
DECODE_3D_UNDERWORLD = 0 //!< Kyriakos Herakleous, Charalambos Poullis. "3DUNDERWORLD-SLS: An Open-Source Structured-Light Scanning System for Rapid Geometry Acquisition", arXiv preprint arXiv:1406.6595 (2014).
};
/** @brief Abstract base class for generating and decoding structured light patterns.
*/
class CV_EXPORTS_W StructuredLightPattern : public virtual Algorithm
{
public:
/** @brief Generates the structured light pattern to project.
@param patternImages The generated pattern: a vector<Mat>, in which each image is a CV_8U Mat at projector's resolution.
*/
CV_WRAP
virtual bool generate( OutputArrayOfArrays patternImages ) = 0;
/** @brief Decodes the structured light pattern, generating a disparity map
@param patternImages The acquired pattern images to decode (vector<vector<Mat>>), loaded as grayscale and previously rectified.
@param disparityMap The decoding result: a CV_64F Mat at image resolution, storing the computed disparity map.
@param blackImages The all-black images needed for shadowMasks computation.
@param whiteImages The all-white images needed for shadowMasks computation.
@param flags Flags setting decoding algorithms. Default: DECODE_3D_UNDERWORLD.
@note All the images must be at the same resolution.
*/
CV_WRAP
virtual bool decode( const std::vector< std::vector<Mat> >& patternImages, OutputArray disparityMap,
InputArrayOfArrays blackImages = noArray(),
InputArrayOfArrays whiteImages = noArray(),
int flags = DECODE_3D_UNDERWORLD ) const = 0;
};
//! @}
}
}
#endif