Patent ID: 11961244
Assignee: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The method according to claim 1, wherein the quad-camera fringe projection system includes a computer, four cameras, and a projector; the projector and the four cameras are connected by four trigger lines, and the four cameras and the computer are connected by four data lines,
wherein the first camera and the projector are kept at a long distance, there is a gap between the first camera and the projector where another camera is placed; the second camera is placed between the first camera and the projector and is placed close to the first camera; the fourth camera and the first camera are placed symmetrically for the projector; the third camera and the first camera are placed symmetrically for the projector, and
wherein the step 1 further comprises calibrating the entire system to unified world coordinates, obtaining internal and external parameters of the four cameras and projectors, and converting the internal and external parameters into 2D to 3D, 3D to 2D, and 2D to 2D mapping parameters.