公开(公告)号：GB2336729A

公开(公告)日：1999-10-27

申请号：GB9808719

申请日：1998-04-25

Applicant: IBM

Inventor： CHAPMAN SYDNEY GEORGE ,  WALTER ANDREW GORDON NEIL

IPC: G01B3/00 ,  G01B11/02 ,  H03M1/24 ,  H03M1/22

Abstract: A reticle for an object measurement system has a pattern 10 having a plurality of pairs of contrasting elements in the form of black (11..14) and white (21..24) wedges. Each black/white wedge pair defines a path towards a pattern origin 19 such that an edge of an object 50 occluding the path causes a change in contrast adjacent an edge point along the path. The pattern has a series of Gray-coded elements 15 associated with each pair of black/white wedges. The Gray-coded elements are indicative of an absolute coordinate of each edge point at which an object edge crosses a path. A series of triangles 16 associated with each pair of black/white wedges, whose absolute coordinates are known, allow a measurement system to provide accurate coordinates for each edge point.

公开(公告)号：GB2336729A9

公开(公告)日：2001-07-10

申请号：GB9808719

申请日：1998-04-25

Applicant: IBM

Inventor： CHAPMAN SYDNEY GEORGE ,  WALTER ANDREW GORDON NEIL

IPC: G01B3/00 ,  G01B11/02 ,  H03M1/24 ,  H03M1/22

公开(公告)号：GB2352859A

公开(公告)日：2001-02-07

申请号：GB9917900

申请日：1999-07-31

Applicant: IBM

Inventor： LUKE JAMES ,  SHARP CHRISTOPHER EDWARD ,  WALTER ANDREW GORDON NEIL

IPC: G06T7/20 ,  H04N13/02 ,  H04N15/00 ,  G08B13/194

Abstract: A monitoring system using two or more cameras to monitor a three-dimensional space. A 3-D monitored volume(s) is(are) defined, preferably as CSG objects, within this space. By detecting a moving object using two or more cameras, the system can determine whether said moving object intersects the defined monitored volume(s) and take appropriate action.

公开(公告)号：GB2336729B

公开(公告)日：2001-10-31

申请号：GB9808719

申请日：1998-04-25

Applicant: IBM

Inventor： CHAPMAN SYDNEY GEORGE ,  WALTER ANDREW GORDON NEIL

IPC: G01B3/00 ,  G01B11/02 ,  H03M1/24 ,  H03M1/22

公开(公告)号：GB2409540A

公开(公告)日：2005-06-29

申请号：GB0329784

申请日：2003-12-23

Applicant: IBM

Inventor： AIRES KEVIN BARNABY ,  WALTER ANDREW GORDON NEIL

IPC: G06F17/30 ,  G11B17/00 ,  G11B27/028 ,  G11B27/034 ,  H04N7/173

Abstract: A system for preparing a first multimedia stream, comprises a repository 140 for storing a plurality of tracks wherein each track is associated with at least one second multimedia stream. A track comprises a single type of data e.g. audio, video etc. The system receives a request comprising an associated parameter); e.g. position parameter; determines at least two of the tracks associated with the parameter; 125 (e.g. wherein the at least two tracks have associated information that matches the position parameter); and collates 130 the determined at least two tracks in order to generate the first multimedia stream 135. The collation may involve interleaving, overlagging or concentration of the tracks.

公开(公告)号：GB2354390A

公开(公告)日：2001-03-21

申请号：GB9921786

申请日：1999-09-16

Applicant: IBM

Inventor： WALTER ANDREW GORDON NEIL

IPC: G02B5/09 ,  H04N5/225

Abstract: Disclosed is apparatus for wide-angle image capture comprising a pair of image capture device 301,302, each image capture device being arranged to capture an image from one plane mirror; and a pair of said plane mirrors, each plane mirror being arranged to reflect a portion of a scene to one of said image capture devices, said pair of plane mirrors being arranged in planes which intersect at an edge and form a reflective wedge 303, said edge being between said scene and a line between optical centres of said image capture devices. In the apparatus, the image capture devices have their virtual optical centres substantially lying on a common plane which intersects said edge, further characterised in that said virtual optical centres of said image capture devices are located substantially on a median plane of said wedge. Preferably, the field of view overlap is less than 0.1 and preferably less than 0.06 degrees. The devices can be cameras or charge-coupled devices. The mirrors can be rectangular or trapezoidal. Preferably a plurality of devices (601,603, Fig 6 or 703,704, Fig 7) are provided with either a further wedge mirror (605, Fig 6) or a pair of intersecting wedges (701,702, Fig 7).

公开(公告)号：GB2343579A

公开(公告)日：2000-05-10

申请号：GB9824338

申请日：1998-11-07

Applicant: IBM

Inventor： WALTER ANDREW GORDON NEIL

IPC: G06T3/40 ,  H04N5/262

Abstract: The invention relates to a method for reducing the computational overhead of bicubic interpolation while still providing a similar level of accuracy. The invention takes into account the fact that sampled points surrounding a point whose value is to be determined have respective first, second and third order effects on the calculated value. The invention combines linear interpolation, ignoring points having a third order effect, with cubic interpolation of points having a first and second order effect to derive the value.