PROBLEM TO BE SOLVED: To provide a measurement device, a measurement method and a program for much more easily performing measurement.SOLUTION: A measurement section 44 calculates at least one of the area and peripheral length of a polygon based on measurement points designated on an image in accordance with the instruction of a user to be input via an operation section 6, that is, three more measurement points including undetermined points whose positions can be changed in accordance with a movement instruction to be input via the operation part 6. A control section 45 makes the measurement section 44 calculate at least one of the area and peripheral length of the polygon based on the measurement points, and makes a monitor 4 display at least one of the calculated area and peripheral length of the polygon, and when the movement instruction is input via the operation part 6, updates the positions of the undetermined points, and makes the measurement section 44 calculate at least one of the area and peripheral length of the polygon based on the measurement points including the updated undetermined points, and makes the monitor 4 display at least one of the calculated area and peripheral length of the polygon.【課題】より簡易に計測を行うことができる計測装置、計測方法、およびプログラムを提供する。【解決手段】計測部４４は、操作部６を介して入力されるユーザの指示により画像上で指定される計測点であって、操作部６を介して入力される移動指示により位置を変更可能な未確定点を含む３点以上の計測点に基づく多角形の面積および周長の少なくとも一方を計算する。制御部４５は、計測点に基づく多角形の面積および周長の少なくとも一方を計測部４４に計算させ、計算された多角形の面積および周長の少なくとも一方をモニタ４に表示させた後、操作部６を介して移動指示が入力された場合、未確定点の位置を更新し、更新された未確定点を含む計測点に基づく多角形の面積および周長の少なくとも一方を計測部４４に計算させ、計算された多角形の面積および周長の少なくとも一方をモニタ４に表示させる。【選択図】図３
