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US 7,925,051 B2Granted
Method for capturing images comprising a measurement of local motions
AssigneeSTMicroelectronics S.r.l.
InventorsFabrice Gensolen, Lionel Martin, Guy Cathebras
Life of this patent
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Abstract
A method for capturing a sequence of video images, using an imager including an estimation of the parameters of a model of global motion between successive images. The method may include measurement of local motions on edges of the images, with the estimation of the parameters of the global motion model performed using the result of the measurement of local motions on the edges of the images.
Claims15
A video imager comprising:
- a first region equipped with light-sensitive cells for capturing images;
- and
- a second region having a plurality of unidirectional motion sensors adjacent to respective edges of the first region, enabling local motions to be measured on edges of the images simultaneously with the capture of the images, all of the unidirectional motion sensors in the second region having a detection axis oriented in a first direction with respect to the respective adjacent edge, wherein the video imager is configured to supply local motion data in addition to video data proceeding from the light-sensitive cells.
A video imager comprising:
- means for capturing a first video image and a second video image;
- and
- means for measuring local motions on edges of the images simultaneously with the capturing of the images, wherein the video imager is configured to supply local motion data in addition to video data and the means for measuring local motions measures only motions along an axis oriented along a first direction with respect to adjacent edges of the images.
A video imager, comprising:
- a plurality of light sensitive cells configured to capture first and second video images;
- a plurality of unidirectional motion sensors adjacent to the plurality of lights sensitive cells, all of which are configured to measure local motions along an axis oriented in a first direction with respect to adjacent edges of the captured video images, the motion sensors having:
- a plurality of photoreceptors;
- a first edge detector coupled to a first one of the plurality of photoreceptors;
- a first pulse shaper coupled to the first edge detector;
- a second edge detector coupled to a second one of the plurality of photoreceptors;
- and
- a second pulse shaper coupled to the second edge detector.
5 more elements
Dependencies are inferred from the claim text.