Arithmetic unit for image transformation

摘要

An arithmetic unit for image transformation is disclosed for transforming a fisheye image obtained by using a fisheye lens (2) into a plane image for display, comprising: a first coordinate calculating unit (35) for obtaining first projection coordinates derived by projecting coordinates on the plane image onto a fisheye image face as an imaginary object face; and a second coordinate calculating unit (36) for obtaining second projection coordinates derived by projecting the first projection coordinates obtained by the first coordinate calculating unit (35) onto the fisheye image face.