PROBLEM TO BE SOLVED: To provide a technique for accurately acquiring phase information by suppressing the influence of an abnormal value included in differential phase information, at the time of acquiring the phase information from the differential phase information.SOLUTION: A phase information acquisition device for acquiring phase information from differential phase information on a subject comprises: differential phase acquisition means for acquiring differential phase information relating to plural directions weight setting means for individually setting a weight onto the differential phase information relating to respective directions and phase acquisition means for acquiring the phase information by using an expression obtained by weighting and composing the differential phase information relating to the respective directions with the weight in the respective directions set by the weight setting means.COPYRIGHT: (C)2016,JPO&INPIT【課題】微分位相情報から位相情報を取得する際に、微分位相情報に含まれる異常値の影響を抑えて、精度良く位相情報を求めるための技術を提供する。【解決手段】被検体の微分位相情報から位相情報を取得する位相情報取得装置が、複数の方向に関する微分位相情報を取得する微分位相取得手段と、各方向の微分位相情報に対する重みを個別に設定する重み設定手段と、前記重み設定手段で設定された各方向の重みにより各方向の微分位相情報を重み付け合成した式を用いて、位相情報を求める位相取得手段と、を有する。【選択図】図4
