I am interested in removing extraneous objects from an image. More specifically the situation is that there is a series of images of a particular background. In each image there are objects in the foreground, however these objects differ across the series of images in terms of their location. Note that some objects always exists in the foreground. The background is static. An example might be a busy tourist spot and you want to remove the people or tourist buses from the image.

I'd like the software to take the series of images and as much as possible reconstruct the background.

Is there software available that has this capability? If so what are the steps necessary to use that functionality? Similarly if anyone knows a lot about image processing, are there any image processing algorithms that could handle this? Thanks.