Method and apparatus for displaying grey-scale or color images from binary images
AssigneeThe Regents of the University of Colorado
InventorDouglas J. McKnight
Life of this patent
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Abstract
An apparatus and method for improving image quality and in particular to an apparatus and method for converting binary images to grey-scale or color images and displaying those images. The apparatus and method utilize the natural process of integration which occurs when a person views images at sufficiently high rates and involves identifying least significant subframes within a group of subframes and reducing the intensity of those subframes or extending the duration of subframes other than the least significant subframes.
Claims25
A method for displaying a grey-scale image on a display unit with a plurality of pixels, comprising the steps of:
- receiving a group of image data including pixel location and pixel intensity, said image data to be displayed at a first rate;
- arranging said group of image data into bit plane subframes;
- attenuating intensity of the least significant unattenuated subframe as well as any previously attenuated subframes to yield attenuated subframes;
- combining unattenuated subframes to yield fewer unattenuated subframes;
- and
- displaying said fewer unattenuated subframes and said lower bit subframes on the display unit at a correspondingly reduced rate to achieve visual integration.
A method for displaying a grey-scale image on a display unit with a plurality of pixels wherein said grey-scale image can include colored or non-colored images, comprising the steps of:
- receiving a group of bit plane subframes to be displayed at a first rate;
- attenuating intensity of the least significant unattenuated subframe as well as any previously attenuated subframes to yield attenuated subframes;
- combining unattenuated subframes to yield fewer unattenuated subframes;
- and
- displaying said fewer unattenuated subframes and said attenuated subframes on the display unit at a correspondingly reduced rate to achieve visual integration.
A method for displaying a grey-scale image on a display unit with a plurality of pixels, wherein said grey-scale image can include colored or non-colored images, comprising the steps of:
- receiving at least one grey-scale image;
- bit slicing said at least one grey-scale image into bit plane subframe;
- attenuating intensity of the least significant unattenuated subframe as well as any previously attenuated subframes to yield attenuated subframes;
- combining unattenuated subframes to yield fewer unattenuated subframes;
- and
- displaying said fewer unattenuated subframes and said attenuated subframes on the display unit at a correspondingly reduced rate to achieve visual integration.
A method for displaying a grey-scale image on a display unit with a plurality of pixels, comprising the steps of:
- receiving a series of N frames of binary images to be displayed at a rate of approximately 1/t;
- arranging the series of N frames of binary images into n groups of m binary subframes, where m is less than or equal to N;
- attenuating the output of the least significant subframes within each of said N groups of subframes;
- combining pairs of subframes within each of said n groups of m subframes to yield a series of unattenuated subframes;
- doubling the duration of the display of the least significant subframes;
- and
- displaying said series of unattenuated subframes and said least significant subframes at a reduced rate of approximately 1/(2t).
A method for displaying a grey-scale image on a binary display unit with a plurality of pixels, comprising the steps of:
- receiving bit plane subframes;
- attenuating intensity of the least significant unattenuated subframe of said bit plane subframes as well as any previously attenuated subframes of said bit plane subframes to yield attenuated subframes;
- combining unattenuated subframes to yield fewer unattenuated subframes;
- and
- displaying said fewer unattenuated subframes and said attenuated subframes on at a correspondingly reduced rate to achieve visual integration.
Dependencies are inferred from the claim text.