Issued Patents All Time
Showing 201–218 of 218 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5859931 | Image compression and decompression using predictive coding and error diffusion | Ying-wei Lin | 1999-01-12 |
| 5852678 | Detection and rendering of text in tinted areas | Jeng-Nan Shiau, Raymond J. Clark | 1998-12-22 |
| 5850474 | Apparatus and method for segmenting and classifying image data | Kathy Ryall, Jeng-Nan Shiau, Shriram V. Revankar | 1998-12-15 |
| 5799112 | Method and apparatus for wavelet-based universal halftone image unscreening | Ricardo L. de Queiroz, Jiebo Luo | 1998-08-25 |
| 5767978 | Image segmentation system | Shriram V. Revankar | 1998-06-16 |
| 5668891 | Methods for determining font attributes of characters | Robert Cooperman, Robert Shuchatowitz, Lucy Hadden, Emil V. Rainero, Frederick J. Roberts, Jr. | 1997-09-16 |
| 5533144 | Anti-counterfeit pattern detector and method | — | 1996-07-02 |
| 5521989 | Balanced error diffusion system | — | 1996-05-28 |
| 5495538 | Segmentation-based JPEG image artifacts reduction | — | 1996-02-27 |
| 5493416 | Method combining error diffusion and traditional halftoning with arbitrary screen orientation | — | 1996-02-20 |
| 5467201 | Iterative error diffusion system | — | 1995-11-14 |
| 5359676 | Decompression of standard ADCT-compressed document images | — | 1994-10-25 |
| 5353127 | Method for quantization gray level pixel data with extended distribution set | Jeng-Nan Shiau | 1994-10-04 |
| 5339170 | Image processing system and method employing hybrid filtering to provide improved reconstruction of continuous tone images from halftone screen-structured images | — | 1994-08-16 |
| 5335088 | Apparatus and method for encoding halftone images | — | 1994-08-02 |
| 5243444 | Image processing system and method with improved reconstruction of continuous tone images from halftone images including those without a screen structure | — | 1993-09-07 |
| 5226096 | Digital halftoning with selectively applied dot-to-dot error diffusion | — | 1993-07-06 |
| 5027078 | Unscreening of stored digital halftone images by logic filtering | — | 1991-06-25 |