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:
Sep. 01, 2020
Filed:
Nov. 14, 2019
Seiko Epson Corporation, Tokyo, JP;
Masakazu Isomura, Nagano, JP;
Kiyoshi Kawai, Nagano, JP;
Kohei Utsunomiya, Nagano, JP;
Tadashi Hayashi, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An image conversion device that performs conversion processing on image data before compression processing is performed includes: a pixel designation unit that sequentially designate, as a second pixel, pixels in a raster line that forms the image data in a direction away from a first pixel, which is a pixel included in the raster line, starting from a pixel adjacent to the first pixel in the raster line as a start point of the designation; an evaluation value calculation unit that calculates, as an evaluation value, an absolute value of a difference between pixel values of the first pixel and the second pixel or a square value of the difference; a determination unit that determines whether or not the evaluation value exceeds a predetermined threshold value; and a conversion unit that calculates a representative value of pixel values from the first pixel to a third pixel that is a pixel adjacent to the second pixel at a side of the first pixel and converts the pixel values from the first pixel to the third pixel into the representative value, at a timing at which the evaluation value is determined to exceed the threshold value.