82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
/********************************************************
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* ██████╗ ██████╗████████╗██╗
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* ██╔════╝ ██╔════╝╚══██╔══╝██║
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* ██║ ███╗██║ ██║ ██║
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* ██║ ██║██║ ██║ ██║
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* ╚██████╔╝╚██████╗ ██║ ███████╗
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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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* Geophysical Computational Tools & Library (GCTL)
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*
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* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
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*
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* GCTL is distributed under a dual licensing scheme. You can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 2
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* of the License, or (at your option) any later version. You should have
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* received a copy of the GNU Lesser General Public License along with this
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* program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If the terms and conditions of the LGPL v.2. would prevent you from using
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* the GCTL, please consider the option to obtain a commercial license for a
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* fee. These licenses are offered by the GCTL's original author. As a rule,
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* licenses are provided "as-is", unlimited in time for a one time fee. Please
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* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
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* to include some description of your company and the realm of its activities.
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* Also add information on how to contact you by electronic and paper mail.
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******************************************************/
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#ifndef _GAUSSFUNC_H
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#define _GAUSSFUNC_H
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#include "../core/enum.h"
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#include "../core/macro.h"
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#include "../core/exceptions.h"
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namespace gctl
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{
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/**
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* @brief 一维高斯分布参数
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*/
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struct gaussian_para1d
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{
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double mu; ///< 分布中心
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double sigma; ///< 分布标准差
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gaussian_para1d();
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gaussian_para1d(double in_mu, double in_sigma);
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};
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//正态函数参数组
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struct gaussian_para2d
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{
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// 中心位置x y 标准差位置半径x y 绕x轴逆时针旋转的弧度
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double mu_x, mu_y, sigma_x, sigma_y, rho;
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gaussian_para2d();
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gaussian_para2d(double in_mux, double in_muy, double in_sigmax,
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double in_sigmay, double in_rho);
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};
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/**
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* @brief 一维高斯分布值
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*
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* @param[in] para 高斯分布参数
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* @param[in] x 采样位置
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*
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* @return 采样位置的概率值
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*/
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double gaussian_dist1d(double x, const gaussian_para1d ¶, gradient_type_e mode = Value);
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/**
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* @brief 二维高斯分布，返回坐标位置的数值
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*
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* @param[in] x x坐标
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* @param[in] y y坐标
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* @param[in] p 高斯分布参数
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* @param[in] mode 计算模式(Value为分布值，Dx为x方向梯度，Dy为y方向梯度)
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*
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* @return 坐标位置的数值
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*/
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double gaussian_dist2d(double x, double y, const gaussian_para2d &p,
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gradient_type_e mode = Value);
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};
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#endif // _GAUSSFUNC_H
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