IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND CONTROL PROGRAM

To provide an image processing apparatus, a control method and a control program capable of detecting vertical stripes from an image with higher accuracy.SOLUTION: An image processing apparatus 200 comprises: an input image acquisition unit 241 that acquires an input image obtained by imaging an ori...

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Bibliographische Detailangaben
Hauptverfasser: YAMANE MASAHIRO, OMI KUNIHIKO, YOKOKAWA TAKESHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an image processing apparatus, a control method and a control program capable of detecting vertical stripes from an image with higher accuracy.SOLUTION: An image processing apparatus 200 comprises: an input image acquisition unit 241 that acquires an input image obtained by imaging an original and the periphery of an original; an edge pixel extraction unit 245 that extracts a first edge pixel from the input image; an original region detection unit 246 that detects an original region on the basis of the first edge pixel; a shadow region detecting unit 247 that detects a shadow region within a predetermined range outside the original region; a noise pixel extracting unit 248 that extracts noise pixels within the shadow region; a vertical stripe detecting unit 249 that detects a noise pixel connected by a predetermined number or more as a vertical stripe; and a correcting unit 251 that corrects the inside of the original region of the input image on the basis of the detection result of the vertical stripe by the vertical stripe detecting unit.SELECTED DRAWING: Figure 18 【課題】より精度良く画像から縦筋を検出することができる画像処理装置、制御方法及び制御プログラムを提供する。【解決手段】画像処理装置200は、原稿及び原稿の周囲を撮像した入力画像を取得する入力画像取得部241と、入力画像から第1エッジ画素を抽出するエッジ画素抽出部245と、第1エッジ画素に基づいて原稿領域を検出する原稿領域検出部246と、原稿領域の外側の所定範囲内において影領域を検出する影領域検出部247と、影領域内でノイズ画素を抽出するノイズ画素抽出部248と、所定数以上連結するノイズ画素を縦筋として検出する縦筋検出部249と、縦筋検出部による縦筋の検出結果に基づいて、入力画像の原稿領域内を補正する補正部251と、を有する。【選択図】図18