Depth image vs depth map

1. What is the difference between depth map and disparity map?
2. What does image depth mean?
3. What does a depth map do?
4. How do I get a depth map from an image?

What is the difference between depth map and disparity map?

Disparity is the horizontal displacement of a point's projections between the left and the right image. Whereas, depth refers to the z coordinate (usually z) of a point located in the real 3D world (x, y, z).

What does image depth mean?

Image Depth, Bit Depth, & Deep Color Image Support

Bit depth is the amount of color information contained in each pixel in an image. An image with a bit depth of 1 means each pixel in the image can either be black or white, as the pixel can only contain 2 values (1 bit is either "on" or "off").

What does a depth map do?

In 3D computer graphics and computer vision, a depth map is an image or image channel that contains information relating to the distance of the surfaces of scene objects from a viewpoint. The term is related (and may be analogous) to depth buffer, Z-buffer, Z-buffering, and Z-depth.

How do I get a depth map from an image?

Go to Photopea.com, press File - Open, and select a JPG photo from your device. You should see layers on the right side (if it is hidden, press Window - Layers). You will see a depth map layer, and possibly a sharp version of your image, too. Press "the eye icon" next to a layer to unhide it.