PROBLEM TO BE SOLVED: To provide an image processing device, etc. capable of appropriately extracting a representative image even when it is difficult to continue to image a subject in a stable state due to characteristics of a living body and a change in imaging conditions.SOLUTION: An image processing device 1 includes a detection part 110 for detecting an abnormal region from a series of image groups acquired by sequentially imaging the inside of a lumen of a living body, and extracting an abnormal image including the abnormal region, a vicinity range setting part 120 for setting a vicinity range of the abnormal image in the series of image groups arranged in time-series order as a time-series vicinity range, an abnormal image group extraction part 130 for extracting an abnormal image group including the same abnormal range from the abnormal image extracted by the detection part 110 on the basis of the time-series vicinity range, and a representative image extraction part 140 for extracting a representative image from the abnormal image group. The vicinity range setting part 120 sets a range wider than the interval of images that are successive in a time series manner in the series of image groups, as the time-series vicinity range.COPYRIGHT: (C)2016,JPO&INPIT【課題】生体の特性や撮像状況の変化により安定した状態で被写体を撮像し続けることが困難な場合であっても、代表画像を適切に抽出することができる画像処理装置等を提供する。【解決手段】画像処理装置1は、生体の管腔内を順次撮像することにより取得された一連の画像群から異常領域を検出し、該異常領域を含む異常画像を抽出する検出部110と、時系列順に並んだ一連の画像群における異常画像の近傍の範囲を時系列近傍範囲として設定する近傍範囲設定部120と、時系列近傍範囲に基づいて、検出部110が抽出した異常画像から同一の異常領域を含む異常画像群を抽出する異常画像群抽出部130と、異常画像群から代表画像を抽出する代表画像抽出部140とを備え、近傍範囲設定部120は、時系列近傍範囲として、上記一連の画像群において時系列的に連続する画像の間隔よりも広い範囲を設定する。【選択図】図1
