05298697 is referenced by 54 patents and cites 6 patents.

An apparatus for detecting people waiting for an elevator. A detecting unit detects the number of people waiting on the basis of an image from an image pickup unit and delivers that number to a corresponding second people waiting detecting unit. The apparatus includes a unit which generates a coefficient depending on a percentage of overlap of the field of view of a reference image pickup unit, which is one of several image pickup units, with the field of view of a different image pickup unit on the basis of data on the allocation of an elevator, and calculates the number of waiting people in the overall hall from the respective numbers of waiting people output from the plurality of image pickup units and those coefficients. The coefficient generating unit generates a maximum coefficient for the reference image pickup unit and a smaller coefficient for any remaining image pickup unit based on the of overlap of the field of view of the respective image pickup units. Thus, even if the fields of view of the plurality of image pickup units overlap, an accurate number of people waiting in the elevator hall, and free from an error in detection, is detected.

Title
Apparatus and methods for detecting number of people waiting in an elevator hall using plural image processing means with overlapping fields of view
Application Number
7/948255
Publication Number
5298697
Application Date
September 21, 1992
Publication Date
March 29, 1994
Inventor
Naoto Oonuma
Hitachi
JP
Hiroaki Yamani
Katsuta
JP
Naofumi Nakata
Katsuta
JP
Kiyoshi Nakamura
Katsuta
JP
Hiromi Inaba
Katsuta
JP
Masato Suzuki
Ibaraki
JP
Agent
Antonelli Terry Stout & Kraus
Assignee
Hitachi
JP
IPC
B66B 1/20
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