The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2014
Filed:
Apr. 05, 2012
Kartheek Chandu, Longmont, CO (US);
Mikel J. Stanich, Longmont, CO (US);
Chai Wah Wu, Hopewell Junction, NY (US);
Barry M. Trager, Yorktown Heights, NY (US);
Kartheek Chandu, Longmont, CO (US);
Mikel J. Stanich, Longmont, CO (US);
Chai Wah Wu, Hopewell Junction, NY (US);
Barry M. Trager, Yorktown Heights, NY (US);
Ricoh Production Print Solutions LLC, Boulder, CO (US);
Abstract
A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.