mirror of http://192.168.1.51:8099/lmh188/twain3.0
91 lines
2.2 KiB
C++
91 lines
2.2 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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(void)side;
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if (pDib.empty()) return;
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if (m_brightness != 0 || m_contrast != 0 || m_gamma < 0.999999f || m_gamma > 1.000001f)
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cv::LUT(pDib, lut, pDib);
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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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(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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void CImageApplyAdjustColors::setAdjustColors(int brightness, int contrast, float gamma)
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{
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m_brightness = cv::max(-255, cv::min(brightness, 255));
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m_contrast = cv::max(-127, cv::min(contrast, 127));
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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::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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uchar buffer[256];
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for (int i = 0; i < 256; i++)
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{
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//update brightness
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ptr[i] = static_cast<unsigned char>(cv::max(0, cv::min(i + m_brightness, 255)));
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//update contrast
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if (ptr[i] < 128)
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ptr[i] = static_cast<unsigned char>(cv::max(0, cv::min(ptr[i] - m_contrast, 127)));
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else
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ptr[i] = static_cast<unsigned char>(cv::max(127, cv::min(ptr[i] + m_contrast, 255)));
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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(static_cast<float>(ptr[i]) / 255.0f, g) * 255.0f + 0.5f)));
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}
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