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https://github.com/kerberos-io/openalpr-base.git
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65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/*
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* Copyright (c) 2014 New Designs Unlimited, LLC
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* Opensource Automated License Plate Recognition [http://www.openalpr.com]
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*
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* This file is part of OpenAlpr.
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*
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* OpenAlpr is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License
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* version 3 as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPENALPR_VERTICALHISTOGRAM_H
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#define OPENALPR_VERTICALHISTOGRAM_H
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#include "opencv2/imgproc/imgproc.hpp"
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struct Valley
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{
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int startIndex;
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int endIndex;
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int width;
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int pixelsWithin;
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};
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enum HistogramDirection { RISING, FALLING, FLAT };
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class VerticalHistogram
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{
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public:
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VerticalHistogram(cv::Mat inputImage, cv::Mat mask);
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virtual ~VerticalHistogram();
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cv::Mat histoImg;
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// Returns the lowest X position between two points.
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int getLocalMinimum(int leftX, int rightX);
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// Returns the highest X position between two points.
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int getLocalMaximum(int leftX, int rightX);
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int getHeightAt(int x);
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private:
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std::vector<int> colHeights;
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int highestPeak;
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int lowestValley;
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std::vector<Valley> valleys;
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void analyzeImage(cv::Mat inputImage, cv::Mat mask);
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void findValleys();
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HistogramDirection getHistogramDirection(uint index);
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};
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#endif // OPENALPR_VERTICALHISTOGRAM_H
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