Nippon Telegraph and Telephone Corporation

Mitsubishi Electric Corporation

Kenji Ogura

Hiroyuki Arai

Toshiaki Sugimura

Shoji Kurakake

Minoru Takahata

Hidetaka Kuwano

Minoru Mori

Provided is an abnormality detection apparatus for a passenger conveyor, including: a first sensor arranged at an upper horizontal portion; a second sensor arranged at a lower horizontal portion; and a control device configured to receive respective outputs of the first sensor and the second sensor, wherein the first sensor and the second sensor are each configured to measure a distance to a side surface of each of steps along a traveling direction of each of steps, and wherein the control device is configured to detect abnormality of the passenger conveyor based on a change amount of each of measurement values given by the first sensor and the second sensor.

Abnormality detection apparatus for passenger conveyor

A scheme for detecting telop character displaying frames in video image which is capable of suppressing erroneous detection of frames without telop characters due to instability of image features is disclosed. In this scheme, each input frame constituting the video data is entered, and whether each input frame is a telop character displaying frame in which telop characters are displayed or not is judged, according to edge pairs detected from each input frame by detecting each two adjacent edge pixels for which intensity gradient directions are opposite on some scanning line used in judging an intensity gradient direction at each edge pixel and for which an intensity difference between said two adjacent edge pixels is within a prescribed range as one edge pair, edge pixels being pixels at which an intensity value locally changes by at least a prescribed amount with respect to a neighboring pixel among a plurality of pixels constituting each input frame.

Scheme for extraction and recognition of telop characters from video data

Scheme for extractions and recognitions of telop characters from video data

Growing community of inventors

Tokyo, Japan

Kenji Ogura