IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM

To solve the problem that binarization processing using a relatively large binarization threshold converts a portion where a character is rubbed into a black pixel, but also converts an unnecessary portion such as a reflected portion of an illumination into the black pixel.SOLUTION: A portion used f...

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Bibliographic Details
Main Author MIYAUCHI TAKASHI
Format Patent
LanguageEnglish
Japanese
Published 06.12.2018
Subjects
CALCULATING
COMPUTING
COUNTING
PHYSICS
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Summary:To solve the problem that binarization processing using a relatively large binarization threshold converts a portion where a character is rubbed into a black pixel, but also converts an unnecessary portion such as a reflected portion of an illumination into the black pixel.SOLUTION: A portion used for prescribed processing of a portion which is converted into a black pixel by binarization processing using relatively large binarization threshold is specified by using a relatively small binarization threshold.SELECTED DRAWING: Figure 6 【課題】 相対的に大きい二値化閾値を用いた二値化処理は、文字が掠れた部分を黒画素化するが、照明の映り込み部分などの不要な部分も黒画素化してしまう。【解決手段】 相対的に大きい二値化閾値を用いた二値化処理で黒画素化された部分のうち、所定の処理に用いる部分を、相対的に小さい二値化閾値を用いて特定する。【選択図】 図６
Bibliography:Application Number: JP20170101042