Converting greyscaled images into colored ones using OpenCV (C++)
This page explains the way to convert greyscale images into colored images using OpenCV's function. Note that the contents of the page is in C++.
Environment:
OpenCV 4.6
Ubuntu 20.04
Method#
Use cv::cvtColor to convert color.
cv::Mat grey_image;// contains grey image data
cv::Mat color_image;
cv::cvtColor(original_image, color_image, cv::COLOR_GRAY2RGB);Description#
cv::cvtColor is a API for conversion from one color space to another. As noted above, if you have greyslace image as an ordinary image file, you can convert it by imread . This page's method is for greyscale data generated from binary data like get RAW data from the CMOS image sensor or etc.
cv::cvtColor takes variety of arguments since the API is for color space conversion. See the API manual linked below.