Image processing device, imaging device equipped with same, image processing method, and image processing program

An image processing device (1) for performing image processing on image data containing a plurality of pixels and obtained by using an imaging element which uses two or more different types of exposure times according to the position of the pixels. The image processing device (1) is equipped with a blurriness estimation unit (104) and a correction unit (122). The blurriness estimation unit (104) estimates the amount of image blurriness present in the image data. The correction unit (122) corrects the image data on the basis of the amount of image blurriness.