Method and apparatus for capturing images of a document with interaction
First Claim
1. An apparatus for capturing images of a document and interaction of a primary user with the document in an interaction session, the apparatus comprising:
- image capture means adapted to capture an initial image of the document and at least one subsequent, additional image of the document during an interaction session, the image being mapped to a known co-ordinate system;
interaction capture means for capturing the interaction of a user with the document, whereby the interaction capture means determines at least one co-ordinate of a pointer used for the interaction relative to the same co-ordinate system defined for the initial captured image; and
processing means for determining an appropriate transform that maps the additional image onto the original image.
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Abstract
The user assistance system provides a system and method for capturing images of a document and interaction of a primary user with the document in an interaction session. Briefly described, one embodiment comprises an image capture means adapted to capture an initial image of the document and at least one subsequent, additional image of the document during an interaction session, the image being mapped to a known co-ordinate system, interaction capture means for capturing the interaction of a user with the document whereby to determine at least one co-ordinate of a pointer used for the interaction relative to the same co-ordinate system defined for the initial captured image, and processing means for determining an appropriate transform that maps the additional image onto the original image.
14 Citations
29 Claims
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1. An apparatus for capturing images of a document and interaction of a primary user with the document in an interaction session, the apparatus comprising:
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image capture means adapted to capture an initial image of the document and at least one subsequent, additional image of the document during an interaction session, the image being mapped to a known co-ordinate system;
interaction capture means for capturing the interaction of a user with the document, whereby the interaction capture means determines at least one co-ordinate of a pointer used for the interaction relative to the same co-ordinate system defined for the initial captured image; and
processing means for determining an appropriate transform that maps the additional image onto the original image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for capturing images of a document and interaction of a primary user with the document in an interaction session and the display of the document and interaction at a remote location, the system comprising:
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image capture means adapted to capture an initial high-resolution image of the document and at least one subsequent, additional image of the document during an interaction session;
interaction capture means for capturing the interaction of a user with the document to determine at least one co-ordinate of a pointer used for the interaction relative to the co-ordinate system of the image capture device;
processing means for determining an appropriate transform that maps the additional image onto the original image;
data generating means for generating a data set indicative of the initial captured image and the mapped co-ordinates; and
transmission means adapted to transmit the generated data set across the network to a remote device, wherein the remote device comprises a composite image generating means which generates a plurality of composite images in which a pointer icon is superimposed on the initial image of the document which is sent across the network. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of capturing the interaction of a user with a document, comprising:
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capturing an initial image of the document using an image capture device;
capturing the interaction of a user with the document to determine at least one co-ordinate of a pointer used for the interaction relative to a co-ordinate system of the image capture device;
capturing at least one additional image of the document;
analyzing at least one additional image to determine if the document has moved within the field of view of the image capture device; and
determining a transform mapping the additional image onto the original image in the event that the document in the additional image is determined to have moved. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A medium which stores a computer program which when running on a processing apparatus causes the processing apparatus to:
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(a) capture an initial image of a document using an image capture device;
(b) capture the interaction of a user with the document to determine co-ordinates of a pointer used for the interaction relative to the co-ordinate system of the image capture device;
(c) capture at least one additional image of the document;
(d) analyse the additional image to determine if the document has moved within the field of view of the image capture device;
(e) determine an appropriate transform that maps the additional image onto the original image in the event that the additional image has moved; and
(f) apply the transform to the captured co-ordinates of the pointer to produced mapped pointer co-ordinates.
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Specification