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Image processing unit and method for executing image processing of a virtual environment

  • US 5,442,734 A
  • Filed: 03/06/1992
  • Issued: 08/15/1995
  • Est. Priority Date: 03/06/1991
  • Status: Expired due to Term
First Claim
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1. An image processing unit comprising:

  • sensor means for detecting a view direction of a person and for generating a view vector indicative of the view direction;

    display means having a display screen for displaying an image on the display screen, said display screen having a center; and

    image processing means for generating an image defined by the view vector in accordance with given image data, said image processing means comprising;

    view direction movement discrimination means for fetching the view vector at a certain time interval, and for calculating a view direction movement vector designating a moving speed of the view direction based on the difference between the latest two fetched view vectors;

    priority degree allocation means for receiving the view direction movement vector and for generating a projection vector by projecting the view direction movement vector on the display screen, setting the center of the display screen as an origin, dividing the display screen into a selected number of sections, each divided section having a priority degree and for determining the priority degree for each divided section of the display screen such that the priority degree is higher when the projection vector approaches the divided section and lower as the projection vector is more distant from the center of the display screen to a periphery of the display screen along the projection vector; and

    partial update means for updating the display of the display screen in each divided section by the image defined by the latest view vector, sequentially from the section having a higher priority degree.

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