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SolARContoursExtractorOpencv.cpp
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77 lines (68 loc) · 2.66 KB
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/**
* @copyright Copyright (c) 2017 B-com http://www.b-com.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "SolARContoursExtractorOpencv.h"
#include "SolAROpenCVHelper.h"
#include "core/Log.h"
#include "opencv2/opencv.hpp"
namespace xpcf = org::bcom::xpcf;
XPCF_DEFINE_FACTORY_CREATE_INSTANCE(SolAR::MODULES::OPENCV::SolARContoursExtractorOpencv)
namespace SolAR {
using namespace datastructure;
namespace MODULES {
namespace OPENCV {
SolARContoursExtractorOpencv::SolARContoursExtractorOpencv():ConfigurableBase(xpcf::toUUID<SolARContoursExtractorOpencv>())
{
declareInterface<api::features::IContoursExtractor>(this);
declareProperty("minContourEdges",m_minContourEdges);
}
FrameworkReturnCode SolARContoursExtractorOpencv::extract(const SRef<Image> inputImg, std::vector<Contour2Df> & contours)
{
if (inputImg->getImageLayout() != Image::LAYOUT_GREY)
{
LOG_ERROR("SolARContoursExtractorOpencv::extract takes only binary image as input")
return FrameworkReturnCode::_ERROR_;
}
cv::Mat thresholdImg;
SolAROpenCVHelper::mapToOpenCV(inputImg, thresholdImg);
if(!thresholdImg.empty())
{
std::vector<std::vector<cv::Point>> ocv_contours;
cv::findContours(thresholdImg, ocv_contours, cv::RETR_LIST, cv::CHAIN_APPROX_NONE);
contours.clear();
for (size_t i = 0; i<ocv_contours.size(); i++)
{
size_t contourSize = ocv_contours[i].size();
if (contourSize > m_minContourEdges)
{
Contour2Df contour;
for (size_t j = 0; j < contourSize; j++)
{
contour.push_back(Point2Df(ocv_contours[i][j].x, ocv_contours[i][j].y));
}
contours.push_back(contour);
}
}
}
else
{
LOG_ERROR("SolARContoursExtractorOpencv::extract get an empty image as input")
return FrameworkReturnCode::_ERROR_;
}
return FrameworkReturnCode::_SUCCESS;
}
}
}
} // end of namespace Solar