MOVING PICTURE CODING METHOD AND MOVING PICTURE CODER

Title:

MOVING PICTURE CODING METHOD AND MOVING PICTURE CODER

Document Type and Number:

Japanese Patent JP3593929

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To attain compression with high efficiency by properly detecting a scene change.
SOLUTION: An inter-frame difference calculation means 13 calculated an absolute value of a difference for each corresponding pixel data between two consecutive frames and calculates a mean value per one frame of the difference absolute value and a mean value per one scene. A scene change discrimination means 14 discriminates the occurrence of a scene change when the frame mean value is a prescribed multiple of the scene value or over. A frame type revision means 15 change a frame type so as not to conduct inter-frame prediction coding when the discrimination means detects a scene change.

More Like This:

JP2024510094	Method for determining image encoding mode
JP5152189	Video decoder and digital broadcast receiver
JP2001346201	IMAGE CODER AND ITS METHOD, IMAGE DECODER AND ITS METHOD, IMAGE RECORDER, IMAGE TRANSMITTER

Inventors:

Hiroyuki Ishikawa

Application Number:

JP24972299A

Publication Date:

November 24, 2004

Filing Date:

September 03, 1999

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NEC

International Classes:

H04N19/103; H04N11/04; H04N19/142; H04N19/172; H04N19/196; H04N19/50; H04N19/587; H04N19/625; H04N19/87; H04N19/91; H04N5/14; (IPC1-7): H04N7/32; H04N11/04

Domestic Patent References:

JP7193818A
JP7111631A

Attorney, Agent or Firm:

Masaki Yamakawa

Previous Patent: METHOD FOR MOUNTING SEMICONDUCTOR PRESSURE SENSOR CHIP

Next Patent: CUP-TYPE AUTOMATIC VENDING MACHING