Issued Patents All Time
Showing 151–175 of 218 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7283674 | Using graphic objects in MFD scan-to-export function | Yingjun Bai, Timothy W. Jacobs | 2007-10-16 |
| 7197161 | Embedding information in images using two-layer conjugate screening | — | 2007-03-27 |
| 7187805 | Maximum likelihood estimation of JPEG quantization values | Ricardo L. de Queiroz | 2007-03-06 |
| 7136189 | Color halftoning using a multi-level successive-filling halftone screening algorithm | Gaurav Sharma, Helen HaeKyung Shin, Shen-Ge Wang | 2006-11-14 |
| 7006256 | Watermarked image generator and method of embedding watermarks into an input image | Shen-Ge Wang, Hui Cheng, Ying-wei Lin | 2006-02-28 |
| 7002704 | Method and apparatus for implementing anti-counterfeiting measures in personal computer-based digital color printers | — | 2006-02-21 |
| 6996277 | Image type classification using color discreteness features | — | 2006-02-07 |
| 6991260 | Anti-counterfeiting see-through security feature using line patterns | Shen-Ge Wang | 2006-01-31 |
| 6985628 | Image type classification using edge features | — | 2006-01-10 |
| 6983068 | Picture/graphics classification system and method | Salil Prabhakar, Hui Cheng, John C. Handley, Ying-wei Lin | 2006-01-03 |
| 6980698 | Image finder method and apparatus for pixography and other photo-related reproduction applications | Reiner Eschbach | 2005-12-27 |
| 6973213 | Background-based image segmentation | Hui Cheng | 2005-12-06 |
| 6958828 | Method and apparatus for detecting photocopier tracking signatures | Keith T. Knox, Eric J. Schneider | 2005-10-25 |
| 6956958 | Method of embedding color information in printed documents using watermarking | Shen-Ge Wang, Hui Cheng | 2005-10-18 |
| 6954541 | Method of detecting changes occurring in image editing using watermarks | Hui Cheng, Robert J. Rolleston | 2005-10-11 |
| 6947597 | Soft picture/graphics classification system and method | Ying-wei Lin, Stuart A. Schweid, Jeng-Nan Shiau, Raja Bala | 2005-09-20 |
| 6870640 | Method and apparatus for rendering a continuous tone image representation with multiple digital halftoning | Shen-Ge Wang | 2005-03-22 |
| 6868174 | Anti-counterfeit detection for low end products | William A. Fuss | 2005-03-15 |
| 6844941 | Color halftoning using a single successive-filling halftone screen | Gaurav Sharma, Shen-Ge Wang | 2005-01-18 |
| 6839152 | Adaptive filtering method and apparatus for descreening scanned halftoned image representations | Ying-wei Lin, Hong Li | 2005-01-04 |
| 6798539 | Method for moire-free color halftoning using non-orthogonal cluster screens | Shen-Ge Wang, Zhenhuan Wen | 2004-09-28 |
| 6766053 | Method and apparatus for classifying images and/or image regions based on texture information | Thyagarajan Balasubramanian | 2004-07-20 |
| 6760127 | Multi-level semi-vector error diffusion | Helen HaeKyung Shin | 2004-07-06 |
| 6717696 | Systems and methods for moiré-reduced halftoning | Shen-Ge Wang | 2004-04-06 |
| 6580820 | Digital imaging method and apparatus for detection of document security marks | — | 2003-06-17 |