Invention Grant
US09105129B2 Level of detail transitions for geometric objects in a graphics application
有权
图形应用程序中几何对象的细节转换级别
- Patent Title: Level of detail transitions for geometric objects in a graphics application
- Patent Title (中): 图形应用程序中几何对象的细节转换级别
-
Application No.: US13626296Application Date: 2012-09-25
-
Publication No.: US09105129B2Publication Date: 2015-08-11
- Inventor: John H. Rohlf
- Applicant: John H. Rohlf
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Dority & Manning, P.A.
- Main IPC: G06T17/00
- IPC: G06T17/00 ; G06T17/05 ; G06T15/50

Abstract:
Systems and methods for providing smooth level of detail transitions for geometric objects, such as geometric terrain tiles, are provided. In one embodiment, a parent geometric tile associated with a first level of detail can be partitioned into sub-tiles. The sub-tiles can be blended independently with child geometric tiles associated with a second level of detail. The blends can be adjusted as a function of camera distance over a transition range to provide a smooth level of detail transition. Various enhancements and modifications can be made to the level of detail transition, such as implementing a bias in the level of detail calculation, implementing an unpop algorithm over only a subset of the transition range, implementing a time based fade during a camera stop, and other enhancements.
Public/Granted literature
- US20130321399A1 Level of Detail Transitions for Geometric Objects in a Graphics Application Public/Granted day:2013-12-05
Information query
IPC分类:
G | 物理 |
G06 | 计算;推算或计数 |
G06T | 一般的图像数据处理或产生 |
G06T17/00 | 用于计算机制图的3D建模 |