Tracking digital zoom in a digital video camera
First Claim
Patent Images
1. Apparatus comprising:
- a record button;
a lens;
an image sensor for receiving a series of images viewed by the lens that have a resolution that is higher than the resolution required to record a good quality video image; and
a zoom control for digitally zooming the images received by the image sensor;
processing circuitry coupled to the image sensor that comprises a motion detection and tracking algorithm that extracts video frames from the sensor images, such that the resulting video image substantially tracks the scene, despite motion of the apparatus.
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Abstract
A digital video camera and method that employs a motion detection algorithm to keep the camera locked onto an image when recording digital video images, particularly when using digital zoom features of the camera. The digital video camera comprises a record button, a lens, an image sensor for receiving images viewed by the lens, a viewfinder for viewing the images received by the image sensor, a zoom control for digitally zooming the image received by the image sensor, and processing circuitry coupled to the image sensor. The motion detection algorithm extracts video frames from the sensor images, such that the resulting video image substantially tracks the scene, despite motion of the camera.
93 Citations
18 Claims
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1. Apparatus comprising:
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a record button;
a lens;
an image sensor for receiving a series of images viewed by the lens that have a resolution that is higher than the resolution required to record a good quality video image; and
a zoom control for digitally zooming the images received by the image sensor;
processing circuitry coupled to the image sensor that comprises a motion detection and tracking algorithm that extracts video frames from the sensor images, such that the resulting video image substantially tracks the scene, despite motion of the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method that keeps an apparatus locked onto a scene when recording a video image using digital zoom, comprising the steps of:
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providing apparatus comprising a record button, a lens, an image sensor for receiving an image viewed by the lens, received by the image sensor, a zoom control for digitally zooming the image received by the image sensor, and processing circuitry coupled to the image sensor; and
processing the image using a motion detection and tracking algorithm that extracts video frames from the sensor images, such that the resulting video image substantially tracks the scene, despite motion of the apparatus. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification