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February 19, 2019 03:58
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Experiment with Hue, Saturation and Value of image
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//Global variables | |
Mat src, img, image; | |
//int elem1 = 255; | |
int elem2 = 234; | |
int elem3 = 187; | |
/** @function main */ | |
int main(int argc, char** argv) | |
{ | |
/// Load an image | |
namedWindow("image"); | |
//createTrackbar("Huse", "image", &elem1, max_elem, Hue); | |
//createTrackbar("Saturation", "image", &elem2, max_elem, Saturation); | |
//createTrackbar("Value", "image", &elem3, max_elem, Value); | |
src = imread("road.jpg"); | |
cvtColor(src, img, CV_RGB2HSV); | |
//int hue = elem1 - 255; | |
int saturation = elem2 - 255; | |
int value = elem3 - 255; | |
for (int y = 0; y<img.cols; y++) | |
{ | |
for (int x = 0; x<img.rows; x++) | |
{ | |
//int cur1 = img.at<Vec3b>(Point(y, x))[0]; | |
int cur2 = img.at<Vec3b>(Point(y, x))[1]; | |
int cur3 = img.at<Vec3b>(Point(y, x))[2]; | |
//cur1 += hue; | |
cur2 += saturation; | |
cur3 += value; | |
//if (cur1 < 0) cur1 = 0; else if (cur1 > 255) cur1 = 255; | |
if (cur2 < 0) cur2 = 0; else if (cur2 > 255) cur2 = 255; | |
if (cur3 < 0) cur3 = 0; else if (cur3 > 255) cur3 = 255; | |
//img.at<Vec3b>(Point(y, x))[0] = cur1; | |
img.at<Vec3b>(Point(y, x))[1] = cur2; | |
img.at<Vec3b>(Point(y, x))[2] = cur3; | |
} | |
} | |
cvtColor(img, image, CV_HSV2RGB); | |
imshow("image", image); | |
waitKey(0); | |
return 0; | |
} |
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