To provide an image display apparatus, etc., that enables interpretation of radiograms to be started immediately after acquisition of image data captured by a capsule endoscope. The image display apparatus includes an I/F unit 51 for receiving input of information to the image display apparatus； a storage unit 55 for storing in-vivo image data and information related to a position of the capsule endoscope in a subject； an image processing unit 53 for executing image processing on the in-vivo image data； a position estimating unit 54 for estimating a position of the capsule endoscope during image-capturing of the in-vivo image, on the basis of the information related to the position； a processing setting unit 56 for setting a position estimation level of the position estimating processing and a content of the image processing, on the basis of the information received by the input receiving unit； a processing time estimating unit 57 for predicting a processing time required in processing executed by the image processing unit and the position estimating unit, on the basis of the position estimation level and the content of the image processing set by the processing setting unit； and a display unit 60 for displaying the processing time predicted by the processing time estimating unit.
