METHOD FOR REDUCING COMPUTER CALCULATIONS WHEN GENERATING VIRTUAL IMAGES

摘要

This invention relates to a method for reducing the computer calculations when generating virtual images. The invention is based on the principle that image details which are redundant as regards the function of the vision are neither calculated nor displayed. This is achieved by taking the following steps. The direction of the eyes of an observer is sensed and used as a basis for calculating the observer's momentary point of fixation in the image. At least one zone of the image is defined with the point of fixation as centre point, and if a plurality of zones are defined, these zones are of gradually increasing size. The image information in the smallest zone is calculated and generated with high resolution, and the image information in each larger zone is calculated and generated with lower and lower resolution, the image information in the image outside the largest zone being finally calculated and generated with the lowest resolution.