Optical motion sensing
AssigneeAvago Technologies General IP (Singapore) Pte. Ltd.
InventorsRene Helbing, Todd Sachs, Michael J. Brosnan
Life of this patent
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Abstract
Optical motion sensing systems and methods are described. In one aspect, light from subfields of a scene is focused onto respective capture areas of a focal plane. Successive sets of contemporaneous local images are captured from the focused light. Respective saliency measures are derived from respective ones of the local images. Respective local motion measures are determined from comparisons of corresponding ones of the local images in ones of the contemporaneous local image sets. A respective global motion measure is produced for each of the contemporaneous local image sets based on the respective ones of the local motion measures and the respective ones of the saliency measures.
Claims20
An apparatus, comprising:
- a lens system operable to focus light from subfields of a scene onto respective capture areas of a focal plane;
- an imaging system having active regions each coincident with a respective one of the capture areas in the focal plane, the active regions being operable to cooperatively capture successive sets of contemporaneous local images from the light focused by the lens system;
- a saliency measurement module operable to derive respective saliency measures from respective ones of the local images;
- a local motion measurement module operable to determine respective local motion measures from comparisons of corresponding ones of the local images in ones of the contemporaneous local image sets;
- and
- a global motion determination module operable to classify the local motion measures into a plurality of quantization classes and to produce a respective global motion measure for each of the contemporaneous local image sets based on the respective ones of the local motion measures and the respective ones of the saliency measures.
A method, comprising:
- focusing light from subfields of a scene onto respective capture areas of a focal plane;
- capturing successive sets of contemporaneous local images from the focused light;
- deriving respective saliency measures from respective ones of the local images;
- determining respective local motion measures from comparisons of corresponding ones of the local images in ones of the contemporaneous local image sets;
- classifying the local motion measures into a plurality of quantization classes;
- and
- producing a respective global motion measure for each of the contemporaneous local image sets based on the respective ones of the local motion measures and the respective ones of the saliency measures.
A system comprising, comprising:
- means for focusing light from subfields of a scene onto respective capture areas of a focal plane;
- means for capturing successive sets of contemporaneous local images from the light focused by the lens system;
- means for deriving respective saliency measures from respective ones of the local images;
- means for determining respective local motion measures from comparisons of corresponding ones of the local images in ones of the contemporaneous local image sets;
- means for classifying the local motion measures into a plurality of quantization classes;
- and
- means for producing a respective global motion measure for each of the contemporaneous local image sets based on the respective ones of the local motion measures and the respective ones of the saliency measures.
Dependencies are inferred from the claim text.