Title:
IMAGE PROCESSING METHOD AND PROCESSOR THEREFOR
Document Type and Number:
Japanese Patent JP3423585
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To multiplex sub information onto an image without giving visual effect onto the image and to correctly read the sub information multiplexed on magnification/reduction of the image size.
SOLUTION: The processor is provided with a means 6 that an original image 2 into a frequency component matrix, a means 7 that normalizes the frequency component matrix, a means 8 that receives the normalized frequency component matrix, multiplexed sub information 3, a multiplexed key 4 and a multiplexed strength 5, selects an optional normalized frequency component by the multiplexed key 4, revises the frequency component with the sub information and the multiplexed strength to multiplex the sub information, a means 9 that inversely normalizes the multiplexed normalized frequency component matrix, and a means 10 that applies inverse conversion to the multiplexed normalized frequency component matrix to obtain a multiplexed image 11.
Inventors:
Takao Nakamura
Hiroshi Ogawa
Youichi Takashima
Hiroshi Ogawa
Youichi Takashima
Application Number:
JP21846797A
Publication Date:
July 07, 2003
Filing Date:
August 13, 1997
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04N19/60; G06F17/14; G06T1/00; H04N1/387; H04N1/41; H04N7/08; H04N7/081; H04N19/467; H04N19/70; (IPC1-7): H04N1/387; G06T1/00; H04N1/41; H04N7/08; H04N7/081; H04N7/30
Domestic Patent References:
| JP9191394A |
Attorney, Agent or Firm:
Makoto Suzuki