logo

For the Inventor, By the Inventor

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.:

US 9087291 B1

PDFFull Text
Date of Patent:
Jul. 21, 2015

Filed:

Sep. 24, 2014

Image processing apparatus and method setting thresholds of dither patterns based on density range and generating binary data depending on thresholds of target pixels

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Shinjiro Hori, Yokohama, JP;

Nobutaka Miyake, Yokohama, JP;

Akitoshi Yamada, Yokohama, JP;

Fumitaka Goto, Tokyo, JP;

Ryosuke Iguchi, Kawasaki, JP;

Hidetsugu Kagawa, Kawasaki, JP;

Tomokazu Ishikawa, Yokohama, JP;

Kouta Murasawa, Yokohama, JP;

Hiromitsu Akiba, Yokohama, JP;

Junichi Nakagawa, Tokyo, JP;

Senichi Saito, Funabashi, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Fitzpatrick, Cella, Harper & Scinto

Primary Examiner:

Scott A Rogers

Int. Cl.
CPC ...
H04N 1/405 (2006.01); G06K 15/02 (2006.01); G06K 15/10 (2006.01); B41J 2/21 (2006.01); H04N 1/409 (2006.01); H04N 1/52 (2006.01); H04N 1/58 (2006.01);
U.S. Cl.
CPC ...
G06K 15/1881 (2013.01); B41J 2/21 (2013.01); G06K 15/102 (2013.01); G06K 15/1878 (2013.01); G06K 2215/0094 (2013.01); G06K 2215/101 (2013.01);
Abstract

An image processing apparatus includes a generation unit; wherein a first dither pattern and a second dither pattern have same threshold values that are set for same pixels in a first gradation range, and have different threshold values that are set for same pixels in a second gradation range that exceeds the first gradation range; and the generation unit sets a first threshold value for forming dots of the first dither pattern, and generates a first binary data according to whether or not a threshold value corresponding to a target pixel of the first dither pattern is included in the first threshold value, and sets a second threshold value for forming dots of the second dither pattern, and generates a second binary data according to whether or not a threshold value corresponding to a target pixel of the second dither pattern is included in the second threshold value.

Find Patent Forward Citations

Loading…