IMAGE READING DEVICE, IMAGE READING METHOD, AND IMAGE READING PROGRAM

PROBLEM TO BE SOLVED: To reduce a cost in an image reading device.SOLUTION: An image reading device includes: an image reading unit that acquires an image of an original placed on an original platen; an image reading control unit that controls an image reading timing in the image reading unit so as to acquire a determination image in accordance with a predetermined period, and controls the image reading unit so as to acquire a reference image as a movement determination reference of the original in accordance with a user operation; a feature point coordinate calculation unit that calculates a reference feature point coordinate as a coordinate of a feature point in regards to the reference image and a determination feature point coordinate as a feature point in regards to the determination image; a feature point coordinate difference calculation unit that calculates a difference between the reference feature point coordinate and the determination feature point coordinate in each predetermined period; an original change determination unit that determines the change of the original on the basis of the difference of each predetermined period.SELECTED DRAWING: Figure 3 【課題】 画像読取装置におけるコスト低減を図ること。【解決手段】 原稿台に載置された原稿の画像を取得する画像読取部と、判定画像を所定の周期に従って取得するように画像読取部における画像読取タイミングを制御し、原稿の移動判定基準となる基準画像をユーザの操作に従って取得するように画像読取部を制御する画像読取制御部と、基準画像に係る特徴点の座標である基準特徴点座標と、判定画像に係る特徴点の座標である判定特徴点座標と、を算出する特徴点座標算出部と、基準特徴点座標と判定特徴点座標との差分を所定の周期毎に算出する特徴点座標差分算出部と、所定の周期毎の差分に基づいて原稿の入替を判定する原稿入替判定部と、特徴点座標算出部を有する画像読取装置による。【選択図】図３