Object tracking apparatus
US5473369A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/7864
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object detecting and tracking apparatus detects a tracking target object from a moving image photographed by a television camera and tracks the same, wherein the movement of the object is detected reliably and with high accuracy to automatically track the target object. When tracking is started after putting the target object in a region designating frame "WAKU" displayed on a screen in such a way as to be variable in size and position, a video signal input from a photographic optical system is Y/C-separated. After that, the target object is specified from a tracking region histogram, and movement vectors are obtained from a color-time-space image, color-time-space differential image, and/or luminance-time-space image thereof, thereby making it possible to more reliably detect even the movement of varied objects as compared with the conventional block matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.