PREPROCESSING SYSTEM FOR MOVING IMAGE ENCODING

Title:

PREPROCESSING SYSTEM FOR MOVING IMAGE ENCODING

Document Type and Number:

Japanese Patent JP2004023288

Kind Code:

A

Abstract:

To obtain information about visibility precedence which highly accurately describes human's visual characteristics on a moving image.

Objects in the screen of an input image are extracted (S1), and gazing degree parameters V(j) of each of the extracted objects are calculated (S2). Also, a texture attributes parameter t(k) of each macroblock contained in the object is determined (S3). A visibility precedence parameter w(k) for each macroblock is calculated by using the parameters V(j) and t(k). This parameter w(k) is output to an adaptive quantizer and is used for determination of a quantized parameter.

Inventors:

NAITO HITOSHI
TAKAGI KOICHI
WADA MASAHIRO
MATSUMOTO SHUICHI
ISHIHARA KOICHI

Application Number:

JP2002173141A

Publication Date:

January 22, 2004

Filing Date:

June 13, 2002

Export Citation:

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Assignee:

KDDI R & D LAB INC

International Classes:

H04N19/126; H04N7/24; H04N19/00; H04N19/134; H04N19/136; H04N19/139; H04N19/14; H04N19/142; H04N19/17; H04N19/186; H04N19/189; H04N19/196; H04N19/20; H04N19/503; H04N19/51; H04N19/527; H04N19/61; H04N19/625; H04N19/91; (IPC1-7): H04N7/24

Attorney, Agent or Firm:

Kaori Tanaka
Michito Hiraki
Sanji Tanabe

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