Image information transmission system transmitting maximum and m

Details Image information transmission system transmitting maximum and m Image information transmission system transmitting maximum and m

1989-07-28

1991-09-10

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, H04N 712

Patent

active

050478540

ABSTRACT:
An image information transmission system that transmits image information, one frame of which is constituted by a plurality of image data. The plurality of pixel data corresponding to the one-frame image information is divided into a plurality of pixel blocks using a predetermined number of pixel data as a unit pixel block. Maximum and minimum values of pixel data within each pixel block are detected in units of divided pixel blocks. Maximum value data representing the detected maximum value and minimum value data representing a detected minimum value are output. One of the different quantization characteristics is selected in accordance with a difference between the maximum and minimum values of each pixel blocks output as described above. A level region between the maximum and minimum values is quantized to obtain a plurality of regions on the basis of the selected quantization characteristic. Position data representing one of the plurality of regions to which the pixel data within the pixel block belongs is output.
The maximum and minimum value data output in units of pixel blocks and the position data output in correspondence with the pixel data within each pixel block are transmitted as described above, and therefore, a high-quality image information signal can be transmitted regardless of the characteristics of images.

REFERENCES:
patent: 4722003 (1989-01-01), Kondo
patent: 4802005 (1989-01-01), Kondo
patent: 4845560 (1989-07-01), Kondo et al.

Affiliated with

Also associated with

Rating

Image information transmission system transmitting maximum and m 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 information transmission system transmitting maximum and m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image information transmission system transmitting maximum and m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-544422