System, method and article of manufacture for tracking a head of a camera-generated image of a person
First Claim
1. A method of tracking a head of a person image in video images comprising:
- identifying an initial location of a point of separation between a torso portion and a head portion of the person image in the video images;
tracking a current location of the point of separation between the torso portion and the head portion of the person image starting at the initial location;
generating a confidence value representative of a confidence that the current location of the point of separation between the torso portion and the head portion of the person image in the video images is correct; and
identifying the initial location of the point of separation between the torso portion and the head portion of the person image upon each instance that the confidence value falls below a predetermined amount.
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Accused Products
Abstract
A system, method and article of manufacture are provided for tracking a head portion of a person image in video images. Upon receiving video images, a first head tracking operation is executed for generating a first confidence value. Such first confidence value is representative of a confidence that a head portion of a person image in the video images is correctly located. Also executed is a second head tracking operation for generating a second confidence value representative of a confidence that the head portion of the person image in the video images is correctly located. The first confidence value and the second confidence value are then outputted. Subsequently, the depiction of the head portion of the person image in the video images is based on the first confidence value and the second confidence value.
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Citations
27 Claims
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1. A method of tracking a head of a person image in video images comprising:
identifying an initial location of a point of separation between a torso portion and a head portion of the person image in the video images;
tracking a current location of the point of separation between the torso portion and the head portion of the person image starting at the initial location;
generating a confidence value representative of a confidence that the current location of the point of separation between the torso portion and the head portion of the person image in the video images is correct; and
identifying the initial location of the point of separation between the torso portion and the head portion of the person image upon each instance that the confidence value falls below a predetermined amount. - View Dependent Claims (2, 3, 4, 5)
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6. A computer program embodied on a computer readable medium for tracking a head of a person image in video images comprising:
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a code segment for identifying an initial location of a point of separation between a torso portion and a head portion of the person image in the video images;
a code segment for tracking a current location of the point of separation between the torso portion and the head portion of the person image starting at the initial location;
a code segment for generating a confidence value representative of a confidence that the current location of the point of separation between the torso portion and the head portion of the person image in the video images is correct; and
a code segment for identifying the initial location of the point of separation between the torso portion and the head portion of the person image upon each instance that the confidence value falls below a predetermined amount.
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7. A method of tracking a head of a person image in video images comprising:
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identifying an initial location of a point of separation between a torso portion and a head portion of a person image in video images;
tracking a current location of the point of separation between the torso portion and the head portion of the person image starting at the initial location;
obtaining a flesh map while tracking the current location of the point of separation between the torso portion and the head portion of the person image; and
using the flesh map during subsequent identification of an initial location of the point of separation between the torso portion and the head portion of the person image.
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8. A computer program embodied on a computer readable medium for tracking a point of separation between a torso portion and a head of a person image in video images comprising:
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a code segment for identifying an initial location of the point of separation between the torso portion and the head portion of a person image in video images;
a code segment for tracking a current location of the point of separation between the torso portion and the head portion of the person image starting at the initial location;
a code segment for obtaining a flesh map while tracking the current location of the point of separation between the torso portion and the head portion of the person image; and
a code segment for using the flesh map during subsequent identification of a next initial location of a point of separation between the torso portion and the head portion of the person image.
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9. A system for tracking a head portion of a person image in video images, comprising:
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a receiver for receiving video images;
logic for executing a first head tracking operation for generating a first confidence value representative of a confidence that a head portion of a person image in the video images is located, the first head tracking operation comprising identifying a point of separation between a torso portion of the person image and the head portion of the person image;
logic for executing a second head tracking operation for generating a second confidence value representative of a confidence that the head portion of the person image in the video images is located; and
an output device for outputting the first confidence value and the second confidence value, wherein the depiction of the head portion of the person image in the video images is based on the first confidence value and the second confidence value. - View Dependent Claims (10, 11, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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12. A system for tracking a head portion of a person image in video images, comprising:
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a receiver for receiving video images;
logic for executing a first head tracking operation for generating a first confidence value representative of a confidence that a head portion of a person image in the video images is located;
logic for executing a second head tracking operation for generating a second confidence value representative of a confidence that the head portion of the person image in the video images is located; and
an output device for outputting the first confidence value and the second confidence value, wherein the depiction of the head portion of the person image in the video images is based on the first confidence value and the second confidence value; and
wherein the logic for executing the first head tracking operation subtracts a background image from the video images in order to extract the person image, generates a histogram representing the extracted person image, and identifies a point of separation between a torso portion of the person image and the head portion of the person image. - View Dependent Claims (13, 14)
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27. A system for tracking a head portion of a person image in video images, comprising:
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a receiver for receiving video images;
a processor for executing a head tracking operation for generating a confidence value representative of a confidence that a head portion of a person image in the video images is located, the head tracking operation comprising identifying a point of separation between a torso portion of the person image and the head portion of the person image; and
a display for depicting the head portion of the person image in the video images based on the confidence value.
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Specification