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US 2004/0105496 A1Published application
Adaptive early exit techniques in image correlation
AssigneeIntel Corporation
InventorsBradley C. Aldrich, Jose Fridman
Life of this patent
Estimating the term…
Abstract
Plural sum of absolute difference devices are used to calculate distortions between specified parts of specified images in a video stream. The video can be from a video camera, or other device.
Claims23
An apparatus, comprising:
- a plurality of image manipulating devices, each operating to determine similarities between two image parts;
- and
- a mode switching element, which configures each of said image manipulating devices to determine an entire calculation in a first mode, and configures each of said image manipulating devices to determine only a portion of an entire calculation in a second mode.
A distortion calculating device, comprising;
- a plurality of sum of absolute difference devices, each operating to calculate a total distortion between two image parts;
- and
- a calculation partitioning element which partitions a calculation between said sum of absolute difference devices based on characteristics of the two image parts.
A method of processing an image comprising;
- simultaneously calculating image distortions in a plurality of image distortion calculating devices;
- and
- configuring said image distortion calculating devices in a first mode in which each device calculates a whole calculation and a second mode in which each device calculates only a part of a calculation.
A method of processing an image comprising:
- calculating a difference between two image parts in a plurality of separate devices;
- and
- configuring said devices in a first mode in which each device calculates a whole calculation and a second mode in which each device calculates only a part of a calculation.
A calculating device, comprising:
- a video device producing output video signals;
- a plurality n of sum of absolute difference (“SAD”) devices, each having a subtract device, an absolute device, and an accumulator, connected to receive said video signals;
- and
- a mode changing device, changing a mode of operation between a first mode in which each SAD device calculates a difference between two image parts of said video signals, and a second mode in which each SAD device calculates 1/N of a total of said video signals.
1 more element
Dependencies are inferred from the claim text.