How to find the 3D coordinates of images of a cube?

With given images of a cube (used edge detection), how do I find the 3D coordinates that correspond to some pixels?

For example if I choose a white pixel in the first image, how do you find the corresponding pixel in the other images?

The main goal is to calculate the volume of a cube, from just 3 pictures.

[KSSV]

Where is the image attached?

[Santo Adam Terranova]

These images are just pictures that are taken with an smartphone camera. One picture from the front, one from the side and one from above.

Answer 1

[Ashish Mishra]

If you mention a pixel location in front image of the cube , it will represent a line in side or top view , so better if you wish to calculate the volume of the cube you can locate your desired pixel with the use of impixelinfo function .

Further do activate the datacursormode and set the figure WindowButtonMotionFcn to get the figure's current point property.

Alternatively you can also use imtool function to get the location of a desired pixel as well as complete measurement of any edge.