Television picture stabilizing system
First Claim
1. System for processing and producing from an input video signal exhibiting unsteadiness due to having been produced by an unsteady television camera, a corrected video signal essentially free of such unsteadiness, said system comprising, in combination:
- means receiving said input video signal and for selecting therefrom a reference object within the camera field of view, which reference object but for said camera unsteadiness would normally be stationary, against which to measure picture motion;
means for measuring motion of said selected reference object and for producing a correction signal representative of such measured motion; and
means operative responsively to said correction signal for making the necessary corrections to the overall television picture represented by said input video signal to eliminate picture unsteadiness.
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Accused Products
Abstract
The disclosed picture stabilizing system detects and measures picture unsteadiness in recorded or live video caused by an unsteady television camera and automatically eliminates the unsteadiness without destroying intentional panning and tilting of the camera. This is accomplished by selecting camera motion references within the camera field of view consisting of one horizontal edge and one vertical edge of an object which will normally be stationary, such as a door, a window, or a piece of furniture. The stabilizer "locks" onto these edges, continually measuring their motion from field to field and utilizing a frame store, makes the necessary vertical and horizontal corrections to the overall picture to eliminate such motion. The system is able to correct for movement due to random unsteadiness without interfering with planned camera movement.
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Citations
28 Claims
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1. System for processing and producing from an input video signal exhibiting unsteadiness due to having been produced by an unsteady television camera, a corrected video signal essentially free of such unsteadiness, said system comprising, in combination:
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means receiving said input video signal and for selecting therefrom a reference object within the camera field of view, which reference object but for said camera unsteadiness would normally be stationary, against which to measure picture motion; means for measuring motion of said selected reference object and for producing a correction signal representative of such measured motion; and means operative responsively to said correction signal for making the necessary corrections to the overall television picture represented by said input video signal to eliminate picture unsteadiness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification