Title:
【発明の名称】カメラワーク算出方法及び装置
Document Type and Number:
Japanese Patent JP3332202
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To estimate a content without decoding an original image by discriminating the presence of a correct camera work. SOLUTION: A shot unit classification section 21 classifies a data stream into shots for a consecutive image pickup blocks of the same camera in the unit 22 based on a DCT coefficient being an output of an inverse quantization processing section 62, a coding information analysis section 23 extracts an inter-frame prediction coding image data stream 24 in the unit 22. Then a coding information extract section 25 calculates a motion vector set 26 and the DCT coefficient 27 as coding information from the data string 24. Then a characteristic amount calculation section 28 calculates a motion vector characteristic amount 29 based on the set 26 and the coefficient 27 and a noise discrimination section 39 discriminates whether or not the data are noise vector not reflected on the camera work. Then when the vector is a noise vector, it is processed as a null vector, and when not, the vector is discriminated to be a camera work motion vector and a corrected motion vector 31, a camera work calculation section 32 calculates work information 33 from the vector 31 and the unit 22 and the information 33 are displayed via a reproduction display section 27.
Inventors:
Yasuhiro Niikura
Akihito Akutsu
Hiroshi Hamada
Akihito Akutsu
Hiroshi Hamada
Application Number:
JP26404696A
Publication Date:
October 07, 2002
Filing Date:
October 04, 1996
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04N5/232; H04N19/105; H04N19/134; H04N19/137; H04N19/139; H04N19/167; H04N19/196; H04N19/20; H04N19/42; H04N19/44; H04N19/50; H04N19/503; H04N19/51; H04N19/57; H04N19/61; H04N19/625; H04N19/85; H04N19/87; H04N19/91; (IPC1-7): H04N7/32; H04N5/232
Attorney, Agent or Firm:
Shuuki Akita