Image data encoding/decoding method and apparatus configured to

Details Image data encoding/decoding method and apparatus configured to Image data encoding/decoding method and apparatus configured to

1998-02-17

2000-04-18

Williams, Kimberly A.

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358433, 382232, H04N 141

Patent

active

060522054

ABSTRACT:
Image data encoding/decoding method and apparatus uses a first data divider for dividing image data into--by n-pixel blocks, two data encoders for encoding an--by n-pixel block into a first data block including frequency data elements and into a second data block including an image density, locations of pixels, and a flag, respectively. A first image type determiner is also included for determining a number of different image density values included in the--by n-pixel block, as is a first data selector for selecting the first data block when the first image type determiner determines that the--by n-pixel block includes a number of different image density values different from a first predetermined value and the second data block when the first image type determiner determines that the--by n-pixel block includes a first predetermined number of the different image density values. Two data decoders are included for decoding the first data block into a block substantially similar to the block previously divided by the first data divider and the second data block into a block substantially similar to the block previously divided by the first data divider, respectively. A second image type determiner is used for determining the flag. A second data selector selects the block obtained by decoding the first data block when the flag is different from a second predetermined value and the block obtained by decoding the second data block when the flag is equal to the second predetermined value.

REFERENCES:
patent: 5644406 (1997-07-01), Harrington et al.
patent: 5881176 (1999-03-01), Keith et al.

Affiliated with

Also associated with

Rating

Image data encoding/decoding method and apparatus configured to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image data encoding/decoding method and apparatus configured to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image data encoding/decoding method and apparatus configured to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2340741