Image capture control for in vivo autonomous camera
First Claim
1. A capsule camera apparatus, comprising:
- a housing adapted to be swallowed;
a light source within the housing;
an archival storage device;
a camera within the housing for capturing a first digital image and a second digital image of a scene illuminated by the light source;
a motion detector within the housing comprising;
a metric measurement module coupled to the first digital image and the second digital image measures a metric of a motion between the first digital image and the second digital image;
a motion detection module coupled to the metric measurement module detects the motion based on the metric and a threshold; and
a threshold update module coupled to the metric measurement module and the motion detection module updates the threshold; and
a control circuit within the housing that designates the second digital image for further processing based on the motion detected by the motion detection module.
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Abstract
Systems and methods are provided for motion detection and capture control of video data from a capsule camera system having an on-board storage. The capsule camera system moves through the GI tract under the action of peristalsis and records images of the intestinal walls. The capsule'"'"'s movement is episodic and jerky. The capacity of the on-board storage is limited. In order to avoid unnecessary capture of images when the capsule camera moves very slowly or stalls, motion detection technique is utilized to help control image capture. Furthermore, an adaptive capture control is disclosed that automatically adjusts the threshold level of capture control to maintain proper image capture. The invented capture control also conserves precious battery power by eliminating capture of unnecessary images when the capsule camera moves too slowly or stalls. The present invention of image capture control and threshold update is also applicable to a capsule camera system having a wireless transmitter instead of an on-board storage.
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Citations
35 Claims
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1. A capsule camera apparatus, comprising:
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a housing adapted to be swallowed; a light source within the housing; an archival storage device; a camera within the housing for capturing a first digital image and a second digital image of a scene illuminated by the light source; a motion detector within the housing comprising; a metric measurement module coupled to the first digital image and the second digital image measures a metric of a motion between the first digital image and the second digital image; a motion detection module coupled to the metric measurement module detects the motion based on the metric and a threshold; and a threshold update module coupled to the metric measurement module and the motion detection module updates the threshold; and a control circuit within the housing that designates the second digital image for further processing based on the motion detected by the motion detection module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for capsule camera, comprising:
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providing a housing adapted to be swallowed; providing a light source and a camera within the housing; providing an archival storage device; capturing a first digital image and a second digital image of a scene illuminated by the light source; measuring a metric of motion between the first digital image and the second digital image; detecting a motion based on the metric and a threshold; updating the threshold; and designating the second digital image for further processing based on the motion detected, wherein the measuring, detecting, updating and designating steps are performed by circuitry within the housing. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A capsule camera apparatus, comprising:
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a housing adapted to be swallowed; a light source within the housing; a camera within the housing for capturing a first digital image and a second digital image of a scene illuminated by the light source; a motion detector within the housing comprising; a metric measurement module coupled to the first digital image and the second digital image measures a metric of a motion between the first digital image and the second digital image; a motion detection module coupled to the metric measurement module detects the motion based on the metric and a threshold; and a threshold update module coupled to the metric measurement module and the motion detection module updates the threshold; a wireless transmitter within the housing coupled to transmit the second digital image; and a control circuit within the housing that designates the second digital image for transmission via the wireless transmitter based on the motion detected by the motion detection module.
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34. A capsule camera apparatus, comprising:
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a housing adapted to be swallowed; a light source within the housing; a light control circuitry coupled to the light source to provide light control signal; an archival storage device; a camera within the housing for capturing a first digital image and a second digital image of a scene illuminated by the light source; a motion detector within the housing comprising; a metric measurement module coupled to the first digital image and the second digital image measures a metric of a motion between the first digital image and the second digital image; a motion detection module coupled to the metric measurement module detects the motion based on the metric and a threshold; and a threshold update module coupled to the metric measurement module and the motion detection module updates the threshold, wherein the threshold updating is related to the light control signal; and a control circuit within the housing that designates the second digital image for further processing based on the motion detected by the motion detection module.
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35. A capsule camera apparatus, comprising:
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a housing adapted to be swallowed; a light source within the housing; a light control circuitry coupled to the light source to provide light control signal; a camera within the housing for capturing a first digital image and a second digital image of a scene illuminated by the light source; a motion detector within the housing comprising; a metric measurement module coupled to the first digital image and the second digital image measures a metric of a motion between the first digital image and the second digital image; a motion detection module coupled to the metric measurement module detects the motion based on the metric and a threshold; and a threshold update module coupled to the metric measurement module and the motion detection module updates the threshold, wherein the threshold updating is related to the light control signal; and a wireless transmitter within the housing coupled to transmit the second digital image; and a control circuit within the housing that designates the second digital image for transmission via the wireless transmitter based on the motion detected by the motion detection module.
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Specification