Vehicle-mounted HUD visual optical system parallax calculation algorithm

Abstract

The invention belongs to the technical field of optical display and relates to a visual optical system parallax calculation algorithm. The algorithm is mainly composed of an interactive interface setting module, a computational mesh module, a light trace direction judging module, a parallax calculation convergence speed control module, a parallax calculation precision control module, a data induction and analysis module, a graphical output module and so on, wherein the ray tracing direction judging module determines the ray tracing direction according to the trial and error method, then, according to the distance between the target point and the starting point, the convergence speed of the single calculation is determined by the parallax convergence speed control module. Through many iterative calculations, the tracking point gradually approaches to the target point, and finally the target point is determined by the parallax precision control module. As a visual optical system parallaxcalculation algorithm, that invention can realize one-key simulation analysis and graphic output of all field parallax in the entire pupil exit range of the visual optical system, has high parallax calculation efficiency and adjustable calculation precision, and provides an efficient and high-precision simulation analysis method for real-time calculation of the visual optical system parallax.

Description

technical field [0001] The invention belongs to the technical field of optical display and relates to a parallax calculation method. The present invention can be applied to virtual reality / augmented reality (VR / AR) systems such as head-up display / head-mounted display (HUD / HMD) that require imaging distance. Background technique [0002] When the aircraft is flying at high speed, the pilot needs to repeatedly look down at the airspeed, aircraft attitude and other information displayed on the lower display. In order to reduce the pilot's reaction time, military aircraft are equipped with a head-up display system (HUD), which can collimate and image relevant information in front of the eyes. Infinity, the pilot can see the information clearly without looking down while watching the distant target, which improves the battlefield generation rate. In order to see the infinite target and the relevant information displayed at the same time, both must be within the depth of field of ...

AI Technical Summary

Problems solved by technology

[0004] In addition, for the HUD / HMD system, if there is a large parallax, the observer will obviously feel the display screen jump when the head moves, which will easily cause visual fatigue when watching for a long time, and the display screen will appear when the parallax difference between different fields of view is large. The uneven phenomenon, that is, the characters in different fields of view are at different distances, so the parallax must be controlled during the HUD / HMD system design process, and the parallax must be simulated and analyzed in detail after the design is completed

The existing parallax is mostly obtained through the indirect calculation of the diffuse spots of the HUD / HMD system, which is not intuitive, and can only be calculated for feature points, which is difficult to meet actual needs

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