The invention provides an image processing device, an image processing method, and an image processing program which enable accurately observing a moving image of an object within a time interval within which the object is in a desired state. A control unit performs an analysis process after the elapse of every defined time period. As the analysis process, the control unit acquires evaluation values corresponding to image data of a plurality of frames stored within a latest defined time period and, based on the acquired evaluation values, selects a group of reproduction data formed from image data of a certain number of frames, out of the image data of the plurality of frames stored within the latest defined time period. After the completion of the analysis process, the control unit starts reproduction of a moving image based on the group of reproduction data selected through the analysis process.