Inventor
THOMPSON GERHARD R
US16 patents
⚠️ This page may combine multiple inventors who share the name “THOMPSON GERHARD R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
14 patentsUS6801220B2Oct 5, 2004
Method and apparatus for adjusting subpixel intensity values based upon luminance characteristics of the subpixels for improved viewing angle characteristics of liquid crystal displays
IBM128 citations96
US4654721AMar 31, 1987
System for reproducing multi-level digital images on a bi-level printer of fixed dot size
IBM108 citations95
US6515770B1Feb 4, 2003
Dither mask generation with calibration-independent number of threshold levels
IBM20 citations92
US5053887AOct 1, 1991
Technique for producing a fine grained dithered halftone image having an increased number of gray levels
IBM33 citations92
US6721448B2Apr 13, 2004
Color clustering and segmentation using sigma filtering
IBM25 citations90
US6947178B2Sep 20, 2005
De-screening halftones using sigma filters
IBM44 citations89
US6597813B1Jul 22, 2003
Masks with modulated clustering and aperiodicity and rescaling of masks
IBM12 citations73
US6208431B1Mar 27, 2001
Method of eliminating artifacts in display devices
IBM8 citations73
US6714318B1Mar 30, 2004
Dithering method and apparatus for multitone printers
IBM8 citations72
US6782126B2Aug 24, 2004
Method for combining feature distance with spatial distance for segmentation
IBM12 citations71
US6738162B1May 18, 2004
Digital printer for avoiding moire patterns by using a dithering mask and angular rotation between print head and print medium to simulate analog printer halftoning of color images
IBM8 citations70
US4435782AMar 6, 1984
Data processing system with high density arithmetic and logic unit
IBM15 citations69
US7616347B2Nov 10, 2009
System and method for multi-bit halftoning
IBM0 citations52
US7333244B2Feb 19, 2008
Method and system for embedding an image into two other images
IBM2 citations52