Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7925080 | Method for identifying marked images based at least in part on frequency domain coefficient differences | Chunhua Chen | 2011-04-12 |
| 7885470 | Method and apparatus for steganalysis for texture images | Chunhua Chen | 2011-02-08 |
| 7826638 | Methods and apparatus for lossless data hiding | Guorong Xuan | 2010-11-02 |
| 7822223 | Method for identifying marked images using statistical moments based at least in part on a JPEG array | Chunhua Chen | 2010-10-26 |
| 7783074 | Apparatus and method for steganalysis | Guorong Xuan | 2010-08-24 |
| 7778461 | System and/or method for image tamper detection | Dongdong Fu | 2010-08-17 |
| 7738709 | Method for identifying marked content, such as by using a class-wise non-principal component approach | Guorong Xuan | 2010-06-15 |
| 7724916 | System and method for data hiding using inter-word space modulation | Dekun Zou | 2010-05-25 |
| 7720305 | System and method for robust lossless data hiding and recovering from the integer wavelet representation | Dekun Zou, Zhicheng Ni | 2010-05-18 |
| 7706566 | System and method for reversible data hiding based on integer wavelet spread spectrum | Guorong Xuan | 2010-04-27 |
| 7496210 | System and method for steganalysis | Guorong Xuan | 2009-02-24 |
| 7457431 | System and method for robust reversible data hiding and data recovery in the spatial domain | Zhicheng Ni, Nirwan Ansari | 2008-11-25 |
| 7415155 | Methods and apparatus for reversible data hiding through histogram modification | Zhi Ni, Nirwan Ansari | 2008-08-19 |
| 7356158 | Methods and apparatus for lossless data hiding | Guorong Xuan | 2008-04-08 |
| 6925120 | Transcoder for scalable multi-layer constant quality video bitstreams | Ximin Zhang, Anthony Vetro, Huifang Sun | 2005-08-02 |
| 6708884 | Method and apparatus for rapid and precision detection of omnidirectional postnet barcode location | Wei Su, Cheng-Jyh Chang, Shu-Yang Lin | 2004-03-23 |