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)
-
Just see the below example code 😊 pip install PyMuPDF document : https://pymupdf.readthedocs.io/en/latest/ I think this is better lib...
-
Image size of origin is 320*240. Processing time is 30.96 second took. The result of stitching The resul... -
* Introduction - The solution shows panorama image from multi images. The panorama images is processing by real-time stitching algorithm... -
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...
-
Background subtractor example souce code. OpenCV support about 3 types subtraction algorithm. Those are MOG, MOG2, GMG algorithms. Det... -
This post is about how to copy Mat data to vector and copy vector data to Mat. Reference this example source code. printf("///////...
-
This is data acquisition source code of LMS511(SICK co.) Source code is made by MFC(vs 2008). The sensor is communicated by TCP/IP. ... -
This example source code is to extract HOG feature from images. And save descriptors to XML file. The source code explain how to use HOGD...
-
In past, I wrote an articel about YUV 444, 422, 411 introduction and yuv <-> rgb converting example code. refer to this page -> ht...
-
fig 1. Left: set 4 points (Left Top, Right Top, Right Bottom, Left Bottom), right:warped image to (0,0) (300,0), (300,300), (0,300) Fi...
