OpenCV亮度对比度调节
static void on_track_lightness(int b, void* user_data)
{
Mat image = *((Mat *)user_data);
if (image.empty())
return;
Mat dst = Mat::zeros(image.size(), image.type());
Mat m = Mat::zeros(image.size(), image.type());
addWeighted(image, 1.0, m, 0, b, dst);
imshow("亮度对比度调节", dst);
}
static void on_track_contrast(int b, void* user_data)
{
Mat image = *((Mat *)user_data);
Mat dst = Mat::zeros(image.size(), image.type());
Mat m = Mat::zeros(image.size(), image.type());
double contrast = b / 100.0;
addWeighted(image, contrast, m, 0.0, 0, dst);
imshow("亮度对比度调节", dst);
}
void on_pushButton_brightness_clicked()
{
namedWindow("亮度对比度调节", WINDOW_AUTOSIZE);
int lightness = 50;
int max_value = 100;
int contrast_value = 100;
createTrackbar("Value Bar:", "亮度对比度调节", &lightness, max_value, on_track_lightness,(void*)(&img));
createTrackbar("Constrast Bar:", "亮度对比度调节", &contrast_value, 200, on_track_contrast, (void*)(&img));
on_track_lightness(50, &img);
}
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