Abstract: An image processing apparatus includes an image obtainer that obtains captured images captured with a camera in a time series, an accumulator that accumulates movement information about a moving object in the captured images in the time series, a calculator that calculates movement information about the moving object based on the captured images in the time series obtained by the image obtainer, a comparator that compares the movement information about the moving object calculated by the calculator with the movement information about the moving object accumulated by the accumulator, a determiner that determines, based on a result of comparison of the movement information about the moving object performed by the comparator, whether the moving object being a target for the comparison performed by the comparator shows abnormal movement, and an output unit that outputs a result of determination performed by the determiner.