Hello!!! I have to add a red (or other color) background with a previously uploaded image, someone could tell me how I can do this with openCV? In other words I must show the previously uploaded image, but with its background red. Thank you all for the help
Given your sample image, here two versions, depending of what you want exactly
Version 1:
Mat image = imread("woman.jpg", 0); //read grayscale version of image (1-channel)
cvtColor(image, image, CV_GRAY2BGR); //rgb version, r=g=b
Scalar color = Scalar(0, 0, 255); //define desired color
Mat mask = Mat(image.rows, image.cols, CV_8UC3, color); //create a mask of such color
Mat result;
addWeighted(image, 0.5, mask, 0.5, 0, result, CV_8UC3); //weights can be adjusted to needs
Version 2:
Mat image = imread("woman.jpg", 1); //read color version of image (3-channel)
Scalar color = Scalar(0, 0, 255); //define desired color
Mat mask = Mat(image.rows, image.cols, CV_8UC3, color); //create a mask of such color
Mat result;
addWeighted(image, 0.5, mask, 0.5, 0, result, CV_8UC3); //weights can be adjusted to needs
Results (original/version1/version2):
+1 I think the second solution is more natural and better :)
Asked: 2015-12-03 11:19:39 -0600
Seen: 5,245 times
Last updated: Dec 04 '15
A sample image would be helpful...
a sample image is : http://www.eugeniocorrao.it/wp-conten...