How can I access those UV's. And is there a way to check what the texture color is for a specific UV coordinate?
Step-4: Now, we will evaluate the texture at the UV coordinates (green points) in 3D Space with the help of Texture Input.
Step-5: But, we have a small problem that Blender does not show the Texture in the 3D space and its scale. So, I have added the Vector Math (scale) and Vector Offset nodes to estimate the scale of the texture,
Step-6: Next, connect the Texture Input node and adjust the scale such that it should match scale in Step-1. In this example, the value of scale is 2. The output of the Texture Input node is the colors of the image at the UV vertices.