公开(公告)号：GB2356114A

公开(公告)日：2001-05-09

申请号：GB0015421

申请日：2000-06-26

Applicant: IBM

Inventor： CHELSTOWSKI ILIESE CLAIRE ,  JOHNS CHARLES RAY ,  MINOR BARRY ,  WHITE JNR GEORGE LEOPOLD

IPC: G06T7/20 ,  G06T13/20 ,  G09G5/38 ,  G06T15/00

Abstract: A method for displaying a three-dimensional scene in which some objects are blurred because of motion comprises the steps of categorising the objects in a scene into two sets, a first set containing objects to be blurred and a second set containing objects not to be blurred. The first set of objects is rendered directly to a first buffer, the render time period is then divided into a plurality of time slices and for each time slice each object in the second set is rendered to the first buffer, a scene is accumulated from the first buffer to an accumulation buffer to be displayed. Thus, static objects (non-blurred) are rendered only once and moving objects (blurred) are rendered over a series of time slices. Preferably the categorising step includes determining if a motion vector is associated with an object.

公开(公告)号：GB2356114B

公开(公告)日：2003-09-10

申请号：GB0015421

申请日：2000-06-26

Applicant: IBM

Inventor： CHELSTOWSKI ILIESE CLAIRE ,  JOHNS CHARLES RAY ,  MINOR BARRY ,  WHITE JNR GEORGE LEOPOLD

IPC: G06T7/20 ,  G06T13/20 ,  G09G5/38 ,  G06T15/00

公开(公告)号：CA2307352A1

公开(公告)日：2000-12-30

申请号：CA2307352

申请日：2000-05-01

Applicant: IBM

Inventor： WHITE GEORGE L JR ,  JOHNS CHARLES R ,  MINOR BARRY L ,  CHELSTOWSKI ILIESE CLAIRE

IPC: G06T7/20 ,  G06T13/20 ,  G09G5/38 ,  G06T15/70 ,  G06F17/50

Abstract: A system, method, and computer-usable medium for simulating object blur uses motion vectors. A motion vector, or array of motion vectors, may be specified on either a per-vertex or per-primitive (i.e. per-object) basis. A motion vector is opposite to the direction of the motion, and thus points in the direction of the blur. The magnitude of the motion vector represents the distance the vertex or the primitive (i.e. each vertex in the primitive) travels in one unit of time. When a scene is rendered, only those objects which are in motion, or which are subject to depth of field blurring, are rendered over a series of time slices. All objects which are static (i.e. nonmoving) are rendered directly into a color buffer, rather than being repeatedly rendered over a series of time slices. Thus, static (i.e. non-blurred) objects are rendered only once, while objects which are to be blurred are rendered over a series of time slices.