Relief ObjectBasic Coord. Object
This command creates an object in the XZ plane that is similar to the landscape primitive. However, in this case an image is used instead of fractals to generate the height.
The relief map interprets the different grayscales within the image as altitude values. If you choose a color image, the grayscale is formed from the average value of the red, green and blue components of the bitmap picture. The brighter the pixel, the higher the elevation; the darker the pixel, the deeper it lies within the scene. In other words, darkness defines valleys, brightness is for mountains.
The relief initially has three handles:
If you enable Spherical, only two handles appear: