toolboxes/image/include/nk/image/object/object.hpp

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// toolboxes/image/include/nk/image/object/object.hpp
//
// Object analysis: gradient / edge detection.
 
#pragma once
 
#include <memory_resource>
#include <nk/value/value.hpp>
 
#include <string>
#include <tuple>
 
namespace nk::image {

 

std::tuple<Value, Value>
imgradientxy(const Value &I, const std::string &method,
             std::pmr::memory_resource *mr = nullptr);

std::tuple<Value, Value>
imgradient(const Value &I, const std::string &method,
           std::pmr::memory_resource *mr = nullptr);

std::tuple<Value, Value, Value>
imgradientxyz(const Value &V, const std::string &method,
              std::pmr::memory_resource *mr = nullptr);

std::tuple<Value, Value, Value>
imgradient3(const Value &V, const std::string &method,
            std::pmr::memory_resource *mr = nullptr);
std::tuple<Value, Value, Value>
imgradient3_from_grads(const Value &Gx, const Value &Gy, const Value &Gz,
                       std::pmr::memory_resource *mr = nullptr);

Value edge(const Value &I, const std::string &method,
           double thresh_lo, double thresh_hi,
           std::pmr::memory_resource *mr = nullptr);

Value cornermetric(const Value &I, const std::string &method,
                   double sensitivity_factor,
                   const Value &filter_coef,
                   std::pmr::memory_resource *mr = nullptr);

Value corner(const Value &I, const std::string &method, int maxN,
             double quality_level, double sensitivity,
             const Value &filter_coef,
             std::pmr::memory_resource *mr = nullptr);

void hough(const Value &BW, double rho_res,
           const Value &theta_deg,
           Value &H_out, Value &T_out, Value &R_out,
           std::pmr::memory_resource *mr = nullptr);

Value houghpeaks(const Value &H, std::size_t numpeaks,
                 double threshold,
                 std::size_t nhoodRho, std::size_t nhoodTheta,
                 const Value &theta_deg,
                 std::pmr::memory_resource *mr = nullptr);

Value houghlines(const Value &BW, const Value &theta_deg,
                 const Value &rho, const Value &peaks,
                 double fillgap, double minlength,
                 std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::image