05771307 is referenced by 301 patents and cites 22 patents.

In a passive identification apparatus for identifying a predetermined individual member of a television viewing audience in a monitored viewing area, a video image of a monitored viewing area is captured. A template matching score is provided for an object in the video image. A Eigenface recognition score is provided for an object in the video image. These scores may be provided by comparing objects in the video image to reference files. The template matching score and the Eigenface recognition score are fused to form a composite identification record from which a viewer may be identified. Body shape matching, viewer tracking, viewer sensing, and/or historical data may be used to assist in viewer identification. The reference files may be updated as recognition scores decline.

Title
Audience measurement system and method
Application Number
992383
Publication Number
5771307
Application Date
December 21, 1995
Publication Date
June 23, 1998
Inventor
Jia Zhang
Mundelein
IL, US
Bruce Bernard
Mundelein
IL, US
Morris Lee
Buffalo Grove
IL, US
William L Thomas
Clearwater
FL, US
Ceril T Shagrin
Palm Harbor
FL, US
Daozheng Lu
Buffalo Grove
IL, US
Agent
Marshall O Toole Gerstein Murray & Borun
Assignee
Nielsen Media Research
NY, US
IPC
G06K 9/00
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