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公开(公告)号：AU753413B2
公开(公告)日：2002-10-17
申请号：AU3500499
申请日：1999-06-11
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , EDMARK JOHN T , ENSOR JAMES ROBERT
Abstract: A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen occurs when a computer graphic object represented by computer graphics, e.g., in front of, to the side, above, or below the video screen, undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, because such an object would disappear from view by the viewer. This limitation is overcome by having by determining when a computer graphic object undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, and representing such an object as computer graphics in front of the screen to which at least one perspective transformation is applied, the perspective transformation being at least a function of the position at which the object is actually located.
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公开(公告)号：GB2340329A
公开(公告)日：2000-02-16
申请号：GB9913319
申请日：1999-06-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , EDMARK JOHN T , ENSOR JAMES ROBERT
Abstract: A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen occurs when a computer graphic object represented by computer graphics, e.g., in front of, to the side, above, or below the video screen, undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, because such an object would disappear from view by the viewer. This limitation is overcome by having by determining when a computer graphic object undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, and representing such an object as computer graphics in front of the screen to which at least one perspective transformation is applied, the perspective transformation being at least a function of the position at which the object is actually located.
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Patent Agency Ranking
公开(公告)号：AU3584299A
公开(公告)日：2000-01-13
申请号：AU3584299
申请日：1999-06-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , ENSOR JAMES ROBERT
Abstract: A limitation of a three dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen is that when an object within the field represented by the video undergoes a trajectory that takes it to a location in the world that is not represented by the video but instead is a location which is represented by computer graphics, namely, any portion of the object that is no longer on the video screen disappears. To overcome this limitation, when an object within the field represented by the video undergoes a trajectory that takes it to a location in the world that is not represented by the video on the video screen as currently configured, i.e., shaped and sized, the configuration of the screen is changed so that the object can continue to be displayed as video. The size and/or shape of the video screen is changed. For example, the video screen may be increased in overall size, or it may "grow" a specific appendage screen on which the object is displayed as video. If an additional appendage screen is "grown", it need not be contiguous with the screen as previously configured. Such appendage screens may sized, shaped, and located so that, the video object continues to be visible rather than becoming invisible because it is no longer displayable within the video screen.
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公开(公告)号：CA2270734A1
公开(公告)日：1999-12-16
申请号：CA2270734
申请日：1999-04-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ENSOR JAMES ROBERT , EDMARK JOHN T , CARRARO GIANPAOLO U
Abstract: A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen occurs when a computer graphic object represented by computer graphics, e.g., in front of, to the side, above, or below the video screen, undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, because such an object would disappear from view by the viewer. This limitation is overcome by having by determining when a computer graphic object undergoes a trajectory that takes it to a location in the world that is not represented as computer graphics, but instead is within the field represented by the video, and representing such an object as computer graphics in front of the screen to which at least one perspective transformation is applied, the perspective transformation being at least a function of the position at which the object is actually located.
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公开(公告)号：GB2328102B
公开(公告)日：1999-10-13
申请号：GB9816368
申请日：1998-07-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , ENSOR JAMES ROBERT
Abstract: A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen is that when an object within the field represented by the video undergoes a trajectory that takes it to a location in the world that is not represented by the video but instead is a location in the foreground which is represented by computer graphics, namely, any portion of the object that is no longer on the video screen disappears. To overcome this limitation, when an object within the field represented by the video undergoes a trajectory that takes it to a location in the world that is not represented by the video but instead is a location in the foreground which is represented by computer graphics, such an object, or portion thereof, is made to continue to be visible to the user by representing it at the foreground location to which its trajectory was carrying it using computer graphic techniques, rather than video. Thus, the video object "pops" out of the video and becomes visible, e.g., in front of, or to the side of, the video screen, rather than becoming invisible because it is no longer on the video screen.
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公开(公告)号：GB2328102A
公开(公告)日：1999-02-10
申请号：GB9816368
申请日：1998-07-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , ENSOR JAMES ROBERT
Abstract: A limitation of a three-dimensional world in which objects in the distance may be represented in only two dimensions as a video on a screen is that when an object within the field represented by the video undergoes a trajectory that takes it to a location in the world that is not represented by the video but instead is a location in the foreground which is represented by computer graphics, namely, any portion of the object that is no longer on the video screen disappears. To overcome this limitation, when an object within the field represented by the video 103 undergoes a trajectory that takes it to a location in the world that is not represented by the video but instead is a location in the foreground which is represented by computer graphics 105, 109 such an object, or portion thereof, is made to continue to be visible to the user by representing it at the foreground location to which its trajectory was carrying it using computer graphic techniques 113, rather than video. Thus, the video object "pops" out of the video and becomes visible, e.g., in front of, or to the side of, the video screen, rather than becoming invisible because it is no longer on the video screen.
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公开(公告)号：CA2242166A1
公开(公告)日：1999-02-04
申请号：CA2242166
申请日：1998-06-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CARRARO GIANPAOLO U , ENSOR JAMES ROBERT
Abstract: A limitation of a three-dimensional world in which objects in the distance may b e represented in only two dimensions as a video on a screen occurs when a computer graphic object represented by computer graphics, e.g., in front of, to the side, above, or below the video screen, undergoes a trajectory that takes it to a location in th e world that is not represented as computer graphics, but instead is within the field represe nted by the video, because such an object would disappear from view by the viewer. This limi tation is overcome by having such an object be represented as video on the screen, rather than computer graphics. Thus, the computer graphics object "goes into the video" as v ideo and remains visible to a viewer in front of the video screen, rather than becomi ng invisible because it is blocked from view by the video screen if it were to be generated a t its proper location using computer graphic techniques.
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