The method is simple to to get Color Information of specific pixel coordinate in the OpenGL is simple.
glReadPixels function enables these task.
The example source code is as follows.
struct{ GLubyte red, green, blue; } pixelColor;
glReadPixels(int(i), int(j), 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixelColor);
But the drawback is too slow and we can get exact color information after view rendering.
Thanks.
Subscribe to:
Posts (Atom)
-
In past, I wrote an articel about YUV 444, 422, 411 introduction and yuv <-> rgb converting example code. refer to this page -> ht...
-
Image size of origin is 320*240. Processing time is 30.96 second took. The result of stitching The resul... -
This post is about how to copy Mat data to vector and copy vector data to Mat. Reference this example source code. printf("///////...
-
The MNIST dataset is a dataset of handwritten digits, comprising 60 000 training examples and 10 000 test examples. The dataset can be downl... -
Background subtractor example souce code. OpenCV support about 3 types subtraction algorithm. Those are MOG, MOG2, GMG algorithms. Det... -
line, circle, rectangle, ellipse, polyline, fillConvexPoly, putText, drawContours example source code!!. ... //http://study.... -
As you can see in the following video, I created a class that stitching n cameras in real time. https://www.youtube.com/user/feelmare/sear...
-
Proceed with the project to update the 2012 version, or that you must reinstall Visual Studio 2010. If you are using Visual Studio 2... -
when you want to copy "unsigned char * pData" image buffer to Mat class in OpenCV. This source is simple example code. Mat In...
-
* Introduction - The solution shows panorama image from multi images. The panorama images is processing by real-time stitching algorithm...
