Title:
FILTER
Document Type and Number:
Japanese Patent JPH07298101
Kind Code:
A
Abstract:
PURPOSE: To attain noise reduction through a filter for filtering only the noise- containing signal sections in digital video signals. CONSTITUTION: Each circuit means is operated by a fuzzy logic and provided with inference circuits (look-up tables) C1 and C2 and digital subtracters S1-S4. Each subtracter has an input terminal and is provided for receiving an individual digital video signal for reporting information concerning the pixel to be processed. The number of circuit means included in a filter 1 depends on the size of an image to be processed, and secondly, depends on the number of directions under the operation of a line operator. While using fuzzy type logic rules, a noise calculation circuit 4 compares trigger levels determined in the circuits C1 and C2 with such a trigger level. Thus, noise contained in the digital video signal are reduced effectively.
Inventors:
MANCUSO MASSIMO (IT)
POLUZZI RINALDO (IT)
RIZZOTTO GIANGUIDO (IT)
POLUZZI RINALDO (IT)
RIZZOTTO GIANGUIDO (IT)
Application Number:
JP29325394A
Publication Date:
November 10, 1995
Filing Date:
November 28, 1994
Export Citation:
Assignee:
ST MICROELECTRONICS SRL (IT)
CONS RIC MICROELETTRONICA (IT)
CONS RIC MICROELETTRONICA (IT)
International Classes:
G06F9/44; G06N7/02; G06T5/00; H03H17/00; H04N5/21; H04N5/93; (IPC1-7): H04N5/21; G06F9/44; H03H17/02; H04N5/93
Attorney, Agent or Firm:
Soga Doteru (6 people outside)