1. An image processing apparatus for decoding an image coded in coding processes including (i) prediction on at least one prediction unit (PU) and (ii) frequency transform on transform units (TUs) included in a region including the at least one PU, the image processing apparatus comprising: a partitioning unit configured to partition the at least one PU into blocks along an edge of the TUs; and a processing unit configured to perform image processing, for a predictive image of the at least one PU, on the blocks in a transform order.