Output calibration method for public-viewpoint naked-eye true three-dimensional display system

Abstract

The invention discloses an output calibration method for a public-viewpoint naked-eye true three-dimensional display system. The method comprises the following steps that photosensitive sensors are arranged at the two ends of the side edges of a standard display area, and a current projector is selected; only the current projector is turned on, the central point of the current projector is adjusted so as to be aligned with the central point of the standard display area, wherein the projection area is larger than the standard display area; a content output window is initialized, and the four vertexes of the content output window are sequentially moved toward the inner side of the content output window in a black background so that the content output window and the standard display area can coincide with each other; whether all the projectors are calibrated or not is judged, and if not, the next projector which is not calibrated is selected as the current projector to be calibrated and is recalibrated; if all the projectors are calibrated, the task is ended and quit. The output calibration method has the advantages that adjustment accuracy is high, adaptability is high, hardware overheads are low, the interference between all videos is little, adjustment is fast, the method is easy and convenient to use, and manpower consumption and time consumption are low.

Description

technical field [0001] The invention relates to a calibration technology for multi-viewpoint naked-view true three-dimensional display, in particular to an output calibration method for a multi-viewpoint naked-view true three-dimensional display system. Background technique [0002] True 3D display technology is essentially different from 2D display technology and 3D display technology. True 3D display is a display technology with spatial 3D light field distribution. Each pixel in the true three-dimensional display has three-dimensional characteristics, and its position can be represented by three-dimensional space coordinates (x, y, z); naked vision means that the observer does not need to wear any auxiliary equipment (such as stereoscopic glasses, helmets, etc.) ), you can observe different sides of the observed scene from different directions; true color display can truly display various colors of objects; dynamic 3D display technology can display a 3D world that changes...

AI Technical Summary

Problems solved by technology

[0010] The methods in the prior art include digital keystone correction and optical keystone correction. Digital keystone correction is the keystone correction function of the projector itself, but its keystone correction function is weak and cannot solve the deformation problem of complex direction projection, and the adjustment range is limited. And the adjustment accuracy is poor, unable to meet the needs of true three-dimensional display of multiple viewpoints

Optical keystone correction refers to adjusting the physical position of the lens so that the beam of the projected image is zoomed inversely to the position of the projector, so as to achieve the purpose of trapezoidal correction. Calibration is carried out on the gimbal, and the height, horizontal offset and pitch angle of the projector are adjusted through the gimbal. However, this adjustment method consumes a lot of instruments, and it is difficult and time-consuming to achieve a certain calibration accuracy. Long, for multi-view point display, the number of projectors is large, and the time, equipment and manpower for each adjustment are very large.

Images