#include?“l(fā)um_retinex.h“

#include?
#include?
#include?

namespace?lum?{

????//?timing?helper
	double?get_s（）?{
		using?namespace?std::chrono;
		auto?now?=?system_clock::now（）;
		system_clock::duration?tse?=?now.time_since_epoch（）;
		return?duration_cast（tse）.count（）?/?1e9;
	}

????//?Helper?image?processing?routines
	void?log（const?float*?inimg?float*?outimg?int?sz）?{
#ifdef?USE_MKL
		vsLn（sz?inimg?outimg）;
#else
		for?（int?i?=?0;?i?			float?in?=?inimg[i];
			outimg[i]?=?std::logf（inimg[i]?+?0.00001）;
		}
#endif
	}

	void?exp（const?float*?inimg?float*?outimg?int?sz）?{
#ifdef?USE_MKL
		vsExp（sz?inimg?outimg）;
#else
		for?（int?i?=?0;?i?			outimg[i]?=?std::expf（inimg[i]）;
		}
#endif
	}
	void?mean（const?float*?inimg?float*?outimg?int?outsz）?{
		for?（int?i?=?0;?i?			outimg[i]?=?（inimg[i?*?3]?+?inimg[i?*?3?+?1]?+?inimg[i?*?3?+?2]）?/?3;
		}
	}


	//?helpers?for?image?indices
	class?reflshadidx?{
	public:
		reflshadidx（int?w?int?h）
		:m_w（w）?m_h（h）{}
		int?reflidx（int?x?int?y）?const?{
			return?m_w?*?y?+?x;
		}
		int?shadidx（int?x?int?y）?const?{
			return?m_w?*?m_h?+?reflidx（x?y）;
		}
	private:
		int?m_w;
		int?m_h;
	};
	class?imwrap?{
	public:
		imwrap（const?float*?img?int?w?int?h）
		:m_w（w）?m_h（h）?m_img（img）{?}

		float?operator（）（int?x?int?y）?const?{
			assert（x?>=?0）;
			assert（y?>=?0）;
			assert（x?			assert（y?			return?m_img[m_w?*?y?+?x];
		}
	private:
		const?float*?m_img;
		int?m_w;
		int?m_h;
	};

	//?forward?declaration?of?internal?functions
	void?reflect_clamp（int?w?int?h?float*?refl_in?float*?shading_in）;
	void?preprocess（int?w?int?h?const?float*?img?float*?logimg）;
	void?postprocess（int?w?int?h?float*?refl_in?float*?shading_in?float*?refl_out?float*?shading_out）;
	Eigen::VectorXf?makeB（float?threshold?const?float*?im?int?w?int?h）;

	using?Triplet?=?Eigen::Triplet;
	int?nconstraints（int?w?int?h）?{
		return?w*h?+?2?*?w*（h?-?1）?+?2?*?（w?-?1）?*?h;
	}
	int?nentries（int?w?int?h）?{
		return?2?*?（w*h?+?2?*?w*（h?-?1）?+?2?*?（w?-?1）?*?h）;
	}
	std::vector?makeTriplets（int?w?int?h）?{
		reflshadidx?I（w?h）;
		printf（“Assemble?matrix.\n“）;
		double?assemble_start?=?get_s（）;
		std::vector??entries;
		int?cit?=?0;
		for?（int?y?=?0;?y?			for?（int?x?=?0;?x?				if?（x?					//?dxR（r?c）?=?-lR（r?c）?+?lR（r?c?+?1）
					entries.push_back（Triplet（cit?I.reflidx（x?y）?-1））;
					entries.push_back（Triplet（cit?I.reflidx（x?+?1?y）?+1））;
					cit++;

					//?dxS（r?c）?=?-lS（r?c）?+?lS（r?c?+?1）
					entries.push_back（Triplet（cit?I.shadidx（x?y）?-1））;
					entries.push_back（Triplet（cit?I.shadidx（x?+?1?y）?+1））;
					cit++;
				}
				if?（y?					entries.push_back（Triplet（cit?I.reflidx（x?y）?-1））;
					entries.push_back（Triplet（cit?I.reflidx（x?y?+?1）?+1））;
					cit++;

					entries.push_back（Triplet（cit?I.shadidx（x?y）?-1））;
					entries

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-10-27?04:09??retinex-master\
?????文件????????1296??2015-10-27?04:09??retinex-master\LICENSE.txt
?????文件?????????518??2015-10-27?04:09??retinex-master\README.md
?????目錄???????????0??2015-10-27?04:09??retinex-master\img\
?????文件??????186715??2015-10-27?04:09??retinex-master\img\input.jpg
?????文件?????2558417??2015-10-27?04:09??retinex-master\img\input.ppm
?????文件??????129119??2015-10-27?04:09??retinex-master\img\reflectance.jpg
?????文件??????638417??2015-10-27?04:09??retinex-master\img\reflectance.ppm
?????文件????????8611??2015-10-27?04:09??retinex-master\lum_retinex.cpp
?????文件?????????780??2015-10-27?04:09??retinex-master\lum_retinex.h
?????文件?????????734??2015-10-27?04:09??retinex-master\retinextest.cpp