115 lines
2.9 KiB
C++
115 lines
2.9 KiB
C++
#include "ImageApplyDiscardBlank.h"
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#include "ImageProcess_Public.h"
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CImageApplyDiscardBlank::CImageApplyDiscardBlank(double threshold, int edge, double devTh, double meanTh)
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: m_threshold(threshold)
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, m_edge(edge)
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, m_devTh(devTh)
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, m_meanTh(meanTh)
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{
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}
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CImageApplyDiscardBlank::~CImageApplyDiscardBlank(void)
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{
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}
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void CImageApplyDiscardBlank::apply(cv::Mat& pDib, int side)
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{
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if (apply(pDib, m_threshold, m_edge, m_devTh))
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pDib.release();
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}
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void CImageApplyDiscardBlank::apply(std::vector<cv::Mat>& mats, bool isTwoSide)
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{
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(void)isTwoSide;
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int i = 0;
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for (cv::Mat& var : mats) {
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if (i != 0 && isTwoSide == false)
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break;
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if (!var.empty())
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apply(var, 0);
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i++;
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}
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}
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bool scalar_LE(const cv::Scalar& val1, const cv::Scalar& val2)
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{
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for (int i = 0; i < 3; i++)
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if (val1[i] > val2[i])
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return false;
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return true;
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}
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bool maxMinCompare(const cv::Mat& img, const cv::Mat& mask, double devTh, double meanTh)
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{
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double min, max;
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cv::minMaxLoc(img, &min, &max, 0, 0, mask);
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if (cv::mean(img, mask)[0] < meanTh)
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return false;
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return (max - min) < devTh;
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}
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bool CImageApplyDiscardBlank::apply(const cv::Mat& pDib, double threshold, int edge, int blockSize, double devTh, double meanTh)
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{
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if (pDib.empty())
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return true;
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cv::Mat img_resize;
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cv::resize(pDib, img_resize, cv::Size(), 0.2, 0.2);
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cv::Mat threshold_img;
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if (img_resize.channels() == 3)
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cv::cvtColor(img_resize, threshold_img, cv::COLOR_BGR2GRAY);
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cv::threshold(img_resize.channels() == 3 ? threshold_img : img_resize, threshold_img, threshold, 255, CV_THRESH_BINARY);
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std::vector<std::vector<cv::Point>> contours;
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std::vector<cv::Vec4i> h1;
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hg::findContours(threshold_img, contours, h1, cv::RETR_EXTERNAL, CV_CHAIN_APPROX_SIMPLE);
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std::vector<cv::Point> contour;
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for (const std::vector<cv::Point>& sub : contours)
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for (const cv::Point& p : sub)
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contour.push_back(p);
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cv::RotatedRect rect = hg::getBoundingRect(contour);
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rect.size = cv::Size2f(rect.size.width - edge / 2.5, rect.size.height - edge / 2.5);
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cv::Point2f box[4];
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rect.points(box);
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contour.clear();
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contours.clear();
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for (size_t i = 0; i < 4; i++)
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contour.push_back(box[i]);
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contours.push_back(contour);
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cv::Mat mask = cv::Mat::zeros(img_resize.size(), CV_8UC1);
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hg::fillPolys(mask, contours, cv::Scalar::all(255));
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cv::blur(img_resize, img_resize, cv::Size(3, 3));
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bool b = true;
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if (img_resize.channels() == 3)
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{
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cv::Mat bgr[3];
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cv::split(img_resize, bgr);
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for (size_t i = 0; i < 3; i++)
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{
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b &= maxMinCompare(bgr[i], mask, devTh, meanTh);
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if (!b) break;
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}
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}
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else
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b &= maxMinCompare(img_resize, mask, devTh, meanTh);
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/*
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if (b)
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{
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cv::imwrite("空白页/img1/" + std::to_string(index) + ".bmp", img_resize);
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cv::imwrite("空白页/mask1/" + std::to_string(index) + ".bmp", mask);
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}
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else
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{
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cv::imwrite("空白页/img2/" + std::to_string(index) + ".bmp", img_resize);
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cv::imwrite("空白页/mask2/" + std::to_string(index) + ".bmp", mask);
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}*/
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return b;
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}
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