Method for performing projection display on veins plane

Abstract

The invention provides a method for projected display on a textured plane in the technical field of computer-based image processing. In the method, firstly, a radiation model is established for showing that after the light output by a projector is reflected by a projection screen, the light is grabbed by a camera; secondly, the luminosity response function of the projector and the camera, and thecolor mixing matrices of the projector and the camera are measured; thirdly, the geometrical mapping between the projector and the plane of the camera are established through projected checkerboard images; fourthly, with the given luminosity response function of the projector and the camera, and the color mixing matrices of the projector and the camera, two gray scale images are projected, and the reflectivity information of the projected surface and the ambient light information are found; fifthly, the projected images are rectified and are projected again before the projected images are output according to the geometrical mapping as stated in the third step and the reflectivity information of the projected surface and the ambient light information as stated in the fourth step. After theprojected images are rectified and the light is accelerated through a GPU, the speed can reach 60fps and meets the requirement for real time. The method is applicable to various practical circumstances.

Description

technical field [0001] The invention relates to a projection display method in the technical field of computer image processing, in particular to a projection display method on a textured plane. Background technique [0002] As an imaging system, projection display uses various optical, electronic and mechanical components to generate various optical images between the observer and the objective world. With the development of projector hardware technology, its ever-increasing display capabilities and falling prices have made it a widely used presentation device. Since the projector can project images with larger size and higher resolution than the input image at almost any place, it is more suitable for many application fields than other ordinary desktop screen display methods, especially in augmented reality applications. . However, in actual use, the projection display method is often greatly affected by the objective environment. Images produced by projectors are often...

AI Technical Summary

Problems solved by technology

However, this method ignores the fact that the brightness response function of the projector and camera is a curve, which leads to large calculation errors, and the correction result cannot achieve the desired projection display effect.

Images