Interactive display presentation system
First Claim
1. A display presentation control system suitable for use in providing control to a projection display apparatus including a display computer for generating initial and successive electronic images, a computer-controlled image projector, a projection screen, and a laser pointer operating in pulsing and continuous-radiation modes, the projector for receiving the initial electronic image for projection onto the projection screen as an initial presentation image, and the laser pointer for providing the control when used by a presenter to emit a laser spot onto the projection screen and project a spatial pattern on the initial presentation image, said control system comprising:
- an electronic camera directed at the initial presentation image and producing a sequence of acquired images thereof, each said acquired image comprising image elements; and
, a control module responsive to said acquired images, said control module comprising;
means for locating the laser spot in said acquired images;
means for assigning positional coordinates to each said located laser spot so as to produce a sequence of positional coordinates (xi,yi) corresponding to sequential positions of the laser spot in the initial presentation image;
means for analyzing said sequence of positional coordinates so as to capture a gesture spatial pattern formed by said sequence of positional coordinates;
means for matching said captured gesture spatial pattern to one of a set of pre-established gesture spatial patterns;
means for selecting a display command, said selected display command correlated to said matched pre-established gesture spatial pattern; and
means for generating a subsequent electronic image in response to said selected display command, said subsequent electronic image transmitted to the image projector for projection onto the projection screen as a subsequent presentation image.
2 Assignments
0 Petitions
Accused Products
Abstract
An interactive presentation control system, used with a display computer, a computer-controlled image projector, a laser pointer, and a projection screen, comprises a digital camera and a control module. The display computer generates electronic images which are projected onto the projection screen as presentation images. During operation, a presenter uses the laser pointer to trace out a pre-established gesture spatial pattern onto the presentation image. The digital camera acquires these presentation images from which images a processing section in the control module analyzes and identifies the gesture spatial pattern. The identified gesture spatial pattern is compared to a set of pre-established patterns to find a match and to subsequently select a correlated display command. The display command, which can be executed within the control module or transmitted to the display computer, changes the presentation image by an action such as: advancing to the next image, highlighting a text segment, or zooming in on the image.
310 Citations
37 Claims
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1. A display presentation control system suitable for use in providing control to a projection display apparatus including a display computer for generating initial and successive electronic images, a computer-controlled image projector, a projection screen, and a laser pointer operating in pulsing and continuous-radiation modes, the projector for receiving the initial electronic image for projection onto the projection screen as an initial presentation image, and the laser pointer for providing the control when used by a presenter to emit a laser spot onto the projection screen and project a spatial pattern on the initial presentation image, said control system comprising:
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an electronic camera directed at the initial presentation image and producing a sequence of acquired images thereof, each said acquired image comprising image elements; and
,a control module responsive to said acquired images, said control module comprising;
means for locating the laser spot in said acquired images;
means for assigning positional coordinates to each said located laser spot so as to produce a sequence of positional coordinates (xi,yi) corresponding to sequential positions of the laser spot in the initial presentation image;
means for analyzing said sequence of positional coordinates so as to capture a gesture spatial pattern formed by said sequence of positional coordinates;
means for matching said captured gesture spatial pattern to one of a set of pre-established gesture spatial patterns;
means for selecting a display command, said selected display command correlated to said matched pre-established gesture spatial pattern; and
means for generating a subsequent electronic image in response to said selected display command, said subsequent electronic image transmitted to the image projector for projection onto the projection screen as a subsequent presentation image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A display presentation control system suitable for use in providing control to a projection display apparatus including a display computer for generating initial and successive electronic images, a computer-controlled image projector, a projection screen, and a laser pointer operating in pulsing and continuous-radiation modes, the projector for receiving the initial electronic image for projection onto the projection screen as an initial presentation image, and the laser pointer for providing the control when used by a presenter to emit a laser spot onto the projection screen and project a spatial pattern on the initial presentation image, said control system comprising:
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an electronic camera directed at the initial presentation image and producing a sequence of acquired images thereof, each said acquired image comprising image elements; and
,a control module responsive to said acquired images, said control module comprising;
a memory section comprising a set of pre-established gesture spatial patterns and a set of display commands, each said display command corresponding to one of said pre-established gesture spatial patterns;
locating circuitry for locating the laser spot in said acquired images;
image processing circuitry responsive to the locating of the laser spot in said acquired images, said image processing circuitry for assigning positional coordinates to each said located laser spot, for producing a sequence of positional coordinates (xi,yi) corresponding to sequential positions of the laser spot in the initial presentation image, and for analyzing said sequence of positional coordinates so as to capture a gesture spatial pattern formed by said sequence of positional coordinates; and
command circuitry responsive to said captured gesture spatial pattern for matching said captured gesture spatial pattern to one of said pre-established gesture spatial patterns, for selecting one of said display commands corresponding to said matched gesture spatial pattern; and
for generating a mouse command in response to said selected display command;
said mouse command transmitted to the display computer such that a subsequent presentation image is projected onto the projection screen. - View Dependent Claims (23, 24, 25, 26)
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27. A method for controlling a display presentation apparatus comprising a computer-controlled image projector projecting a sequence of presentation images onto a projection screen, control effected by means of a presenter using a laser pointer to project a laser spot onto the projection screen, the laser spot moved across the presentation image in a pre-established gesture spatial pattern, said method comprising the steps of:
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acquiring a series of images corresponding to the projected presentation image and laser spot, each said acquired image comprising a plurality of image elements;
assigning a series of positional coordinates to the location of the laser spot within each acquired image;
analyzing said series of positional coordinates so as to identify the gesture spatial pattern produced by the laser spot; and
, generating a presentation command in accordance with said identification of the gesture spatial pattern.- View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification