Verfahren zur Erzeugung einer Schwellenmatrix, Bilddatenerzeugungsverfahren, Vorrichtung zur Bilddatenerzeugung, Bildaufzeichnungsvorrichtung und Aufzeichnungsmedium

Details

Veröffentlichungs-Nr.

EP2819391

Aktenzeichen

EP14170973

Anmeldetag

3. Juni 2014

Veröffentlichung

22. November 2017

Erteilung

22. November 2017

Rechtsraum

EP

IPC

H04N1/393H04N1/405

Abstract

In the generation of a threshold matrix for Nx speed writing, first and second areas are set, the first area being a cluster of a plurality of first partial areas substantially evenly distributed in a matrix space, and the second area being an area of the matrix space excluding the first area. Next, at least two writing elements in each of the first partial areas are allocated occurrence numbers and changed into determined elements. Then, at least one writing element in the second area is allocated an occurrence number and changed into a determined element. Thereafter, the other writing elements are allocated occurrence numbers and changed into determined elements. In accordance with the occurrence numbers, the threshold value of each writing element is determined to obtain a threshold matrix for Nx speed writing. This results in a reduction in the graininess of an image in a highlight area.

Anmelder

Firma

SCREEN Holdings Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete