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:
May. 12, 1998
Filed:
Nov. 02, 1995
Naoki Takaoka, Kanagawa, JP;
Atsushi Takagi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The improved method of determining the amount of exposure for use with an image forming apparatus reads the red, green and blue densities of an original image on a pixel basis and determines the amount of exposure of a light-sensitive material in accordance with the result of the reading step. In the method, those pixels of the same color which have been found to have red, green and blue densities within respective predetermined ranges as a result of the reading of said original image are added and after at least part of the pixels that represent a color having a greater number of pixels than a specified value are removed, the remaining pixels are used to perform mathematical operations for determining the amount of exposure. When applied to various types of optical image forming apparatus such as copiers, printers and photograph printing devices, the method enables consistent production of good prints having no density or color failure without the need to specify the identity of an image scene of interest even if a large area of the image is occupied by a particular color as in a scene showing a person on the lawn or a scene taken with backlighting.