| 7292365 |
Methods and systems for determining distribution mean level without histogram measurement |
— |
2007-11-06 |
| 7145697 |
Show-through compensation apparatus and method |
Gaurav Sharma |
2006-12-05 |
| 6961157 |
Imaging apparatus having multiple linear photosensor arrays with different spatial resolutions |
Jagdish C. Tandon, Robert R. Buckley |
2005-11-01 |
| 6958828 |
Method and apparatus for detecting photocopier tracking signatures |
Zhigang Fan, Eric J. Schneider |
2005-10-25 |
| 6628843 |
Image enhancement on JPEG compressed image data |
Reiner Eschbach |
2003-09-30 |
| 6526155 |
Systems and methods for producing visible watermarks by halftoning |
Shen-Ge Wang |
2003-02-25 |
| 6515764 |
Method and apparatus for detecting photocopier tracking signatures |
Zhigang Fan, Erie J. Schneider |
2003-02-04 |
| 6331860 |
Method and apparatus for stitching scanned image segments together to form an oversized document |
— |
2001-12-18 |
| 6128411 |
Method for embedding one or more digital images within another digital image |
— |
2000-10-03 |
| 6101283 |
Show-through correction for two-sided, multi-page documents |
— |
2000-08-08 |
| 5832137 |
Show-through correction for two-sided documents |
— |
1998-11-03 |
| 5790281 |
Method of correcting the measured reflectance of an image acquired by an image acquisition device for the integrating cavity effect |
Brian L. Waldron |
1998-08-04 |
| 5734752 |
Digital watermarking using stochastic screen patterns |
— |
1998-03-31 |
| 5668638 |
Error diffusion method with symmetric enhancement |
— |
1997-09-16 |
| 5649073 |
Automatic calibration of halftones |
Charles M. Hains, Gaurav Sharma |
1997-07-15 |
| 5646744 |
Show-through correction for two-sided documents |
— |
1997-07-08 |
| 5317653 |
Method for quantization gray level pixel data with application of under compensated error diffusion |
Reiner Eschbach, David Birnbaum |
1994-05-31 |
| 4345313 |
Image processing method and apparatus having a digital airbrush for touch up |
— |
1982-08-17 |
| 4305650 |
Illumination system |
— |
1981-12-15 |
| 4246614 |
Binary graphic printer system having an electronic screen with shift control suited for rescreening |
— |
1981-01-20 |
