Image processing system, digital camera, and printing apparatus

I Ozawa, K Ohtsuka - US Patent 6,115,137, 2000 - Google Patents
In order to print an image Sensed by a digital camera using a printing apparatus for forming
an image on a print medium, image data corresponding to the Sensed image is converted …

Tone-dependent error diffusion

P Li, JP Allebach - IEEE Transactions on Image Processing, 2004 - ieeexplore.ieee.org
We present an enhanced error diffusion halftoning algorithm for which the filter weights and
the quantizer thresholds vary depending on input pixel value. The weights and thresholds …

Adaptive error diffusion with improved edge and sharpness perception

WH Chang, S Daly - US Patent 6,671,068, 2003 - Google Patents
The dithering approaches, usually called ordered dithering, typically use Some type of
matrices with integer threshold values. These values are irepeatedly compared to the input …

Halftoning with changeable error diffusion weights

A Yamada, H Hirabayashi - US Patent 6,172,768, 2001 - Google Patents
2. Description of the Related Art Error diffusion halftoning, as generally described in the
seminal works by Floyd, Steinberg and Stucki, has become one of the most popular …

Higher order error diffusion of digital halftoning

WH Chang - US Patent 6,753,978, 2004 - Google Patents
The present invention relates to digital halftoning of continuous tone images and, more
particularly, to a method of error diffusion for digital halftoning. Digital halftoning is a …

Method of and system for automatically producing digital images of a moving object, with pixels having a substantially uniform white level independent of the velocity …

CJ Tsikos, CH Knowles, X Zhu, MD Schnee… - US Patent …, 2005 - Google Patents
2007-02-02 Assigned to METROLOGIC INSTRUMENTS, INC. reassignment METROLOGIC
INSTRUMENTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR …

Inkjet printer model-based halftoning

JH Lee, JP Allebach - IEEE transactions on image processing, 2005 - ieeexplore.ieee.org
The quality of halftone prints produced by inkjet (IJ) printers can be limited by random dot-
placement errors. While a large literature addresses model-based halftoning for …

Tone dependent plane dependent error diffusion halftoning

MT Schramm, JS Gondek - US Patent 6,501,564, 2002 - Google Patents
US Cl....................... 358/1.9; 358/3.03; 358/3.05; 358/534; 382/252 Tone dependent plane
dependent error diffusion halftoning takes into account multiple color planes, Such as cyan …

Method of enhancing a digital image by gray-level grou**

Z Chen, BR Abidi, M Al Abidi - US Patent 7,840,066, 2010 - Google Patents
2006-11-14 Assigned to RESEARCH FOUNDATION, UNIVERSITY OF TENNESSEE
reassignment RESEARCH FOUNDATION, UNIVERSITY OF TENNESSEE ASSIGNMENT …

Automated inspection of a printed image

M Vans, G Amir, R Jodra, O Barkol, R Dagan… - US Patent …, 2014 - Google Patents
design-rule approach a set of rules that describe properties of images are defined and can
be statistically verified for a potentially defective image. In this case, as little as 10% of a …