Apparatus and method for compressing data while retaining image

Apparatus for binary-coding image and method using the same

Apparatus for effecting A/D conversation on image signal

Archival information storage on optical medium in human and...

Bi-level image compression by gray scale encoding

Binary-coding pattern creating method and apparatus,...

Cluster dot halftoning system

Clustered aperiodic mask

Clustered-dot dither with white-fleck suppression

Coder, coding method, program, and image forming apparatus...

Color document image recognizing apparatus

Device, method and storage medium for recognizing a document...

Digital halftone rendering of a gray scale image with frequency

Dither matrix producing method

Error sum method and apparatus for intercolor separation control

Halftone image formation using dither matrix generated based upo

Halftoning with gradient-based selection of dither matrices

Hybrid imaging system

Image compression and restoring method for binary images

Image compression system using halftoning and inverse halftoning