Method and apparatus for eliminating steroscopic cross images
AssigneeRecherches Point Lab Inc.
InventorBrian Guralnick
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Abstract
The preferred embodiment of the present invention compensates for the phosphorous glow of cathode ray tube displays which is retained from one image to the next and eliminates the ghosting effect seen when viewing 3-D images using shutter, polarized or colored stereoscopic glasses. It can additionally be used to compensate for light leaking through LCD shutter glasses. The source images for each eye are not displayed directly once modulated. The source images are modified using positive and negative ratio combinations of both eye images to be displayed to each eye. The displayed image for one eye is a percentage of the source image for that eye, minus a percentage of the source image for the other eye, plus a percentage of white. The ratio can be preset or modified in real-time by the viewer.
Claims19
A method for eliminating a ghosting effect in images to be viewed with a 3-D stereoscopic apparatus, the method comprising:
- a) creating a left source image and a right source image from a test image wherein ghosting effect has been emphasized;
- b) modifying the left source image using a parameter and information from the right source image to create a compensated left source image;
- c) modifying the right source image using said parameter and information from the left source image to create a compensated right source image;
- d) displaying the compensated left image and compensated right image on a common display in a manner enabling 3-D viewing;
- e) at least one of Increasing and decreasing said parameter;
- f) repeating steps b) through e) until said ghosting effect disappears;
- g) creating a left source image and a right source image from a video source;
- h) modifying the left source image using said parameter and information from the right source image to create a compensated left source image:
- i) modifying the right source image using said parameter and information from the left source image to create a compensated right source image;
- j) displaying the compensated left image and compensated right image on a common display in a manner enabling 3-D viewing and
- wherein a viewer sees a 3-D stereoscopic image of the left and right images with reduced cross image.
A method for eliminating a ghosting effect in images prepared for 3-D viewing by a 3-D stereoscopic apparatus, the method comprising
- obtaining a source image stream containing alternating left source images prepared for 3-D viewing and right source images prepared for 3-D viewing;
- buffering the source image stream by a delay of one image;
- using the buffered source image stream and the source image stream to obtain the corresponding left and right source images;
- modifying the left source image using information from the right source image to create a compensated left source image;
- modifying the right source image using information from the left source image to create a compensated right source image;
- displaying the compensated left image and compensated right image on a common display in a manner enabling 3-D viewing and
- wherein a viewer sees a 3-D stereoscopic image of the left and right images with reduced cross image.
Dependencies are inferred from the claim text.