mirror of http://192.168.1.51:8099/lmh188/twain3.0
109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
#include "ImageApplyAdjustColors.h"
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CImageApplyAdjustColors::CImageApplyAdjustColors(void)
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: m_brightness(0)
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, m_contrast(0)
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, m_gamma(1.0f)
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, lut(1, 256, CV_8UC1)
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{
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update_lutData();
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}
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CImageApplyAdjustColors::CImageApplyAdjustColors(int brightness, int contrast, float gamma)
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: lut(1, 256, CV_8UC1)
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{
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setAdjustColors(brightness, contrast, gamma);
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}
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CImageApplyAdjustColors::~CImageApplyAdjustColors(void)
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{
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}
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void CImageApplyAdjustColors::apply(cv::Mat& pDib,int side)
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{
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#ifdef LOG
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FileTools::write_log("imgprc.txt", "enter CImageApplyAdjustColors apply");
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#endif // LOG
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if (pDib.empty())
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{
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#ifdef LOG
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FileTools::write_log("imgprc.txt", "exit CImageApplyAdjustColors apply");
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#endif // LOG
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return;
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}
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if (m_brightness != 0 || m_contrast != 0 || m_gamma != 1.0)
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cv::LUT(pDib, lut, pDib);
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#ifdef LOG
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FileTools::write_log("imgprc.txt", "exit CImageApplyAdjustColors apply");
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#endif // LOG
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}
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void CImageApplyAdjustColors::apply(std::vector<cv::Mat>& mats, bool isTwoSide)
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{
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if (mats.empty()) return;
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if (!mats[0].empty()) {
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apply(mats[0], 0);
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}
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if (isTwoSide && mats.size() > 1) {
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if(!mats[1].empty())
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apply(mats[1], 1);
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}
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}
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void CImageApplyAdjustColors::setAdjustColors(int brightness, int contrast, float gamma)
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{
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setBrightness(brightness);
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setContrast(contrast);
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setGamma(gamma);
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update_lutData();
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}
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void CImageApplyAdjustColors::setBrightness(int brightness)
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{
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m_brightness = cv::max(-255, cv::min(brightness, 255));
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update_lutData();
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}
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void CImageApplyAdjustColors::setContrast(int contrast)
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{
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m_contrast = cv::max(-127, cv::min(contrast, 127));
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update_lutData();
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}
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void CImageApplyAdjustColors::setGamma(float gamma)
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{
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m_gamma = cv::max(0.1f, cv::min(gamma, 5.0f));
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update_lutData();
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}
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void CImageApplyAdjustColors::update_lutData()
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{
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unsigned char* ptr = lut.data;
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if (m_gamma != 1.0f)
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{
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float g = 1.0f / m_gamma;
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for (int i = 0; i < 256; i++)
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ptr[i] = static_cast<unsigned char>(cv::min(255, static_cast<int>(cv::pow(i / 255.0f, g) * 255.0f + 0.5f)));
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}
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else
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{
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for (int i = 0; i < 256; i++)
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{
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//update contrast
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if (i < 128)
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ptr[i] = static_cast<unsigned char>(cv::max(0, cv::min(i - m_contrast, 127)));
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else
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ptr[i] = static_cast<unsigned char>(cv::max(127, cv::min(i + m_contrast, 255)));
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//update brightness
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ptr[i] = static_cast<unsigned char>(cv::max(0, cv::min(ptr[i] + m_brightness, 255)));
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}
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}
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}
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