METHOD AND DEVICE FOR DEPTH IMAGING

摘要

A projector (P) transilluminates dots (Di) of a matrix (M) in direction towards a scene (Sc) there forming scene dots. In a camera sensor (S) a displacement (”i) nf an image (Ii Z ) of an ith scene dot originating from projecting the dot (Di) and having a distance of (Z) from the projector is measured from a location, which is anticipated to be a location of an image (Ii Z- ) of an ith dot in a plane at a lowest distance of (Z-), which ith dot would originate from said dot (Di), and said distance of (Z) in the paraxial approximation is Z = (1/Z- - ”i/fC.d) -1 , whereat fC is a camera focal length. The distance of (Z) from a proposed device (DID) for any scene point is simply calculated on the basis of said displacement (”i) and straightforward interpolations.