1. A method of processing images captured using an in vivo capsule camera, the method comprising: receiving a plurality of images captured by the in vivo capsule camera as to-be-processed images; applying large-overlap image stitching to the to-be-processed images, wherein said applying the large-overlap image stitching comprises: generating each of one or more first-stage stitched images by stitching a current to-be-processed image with a previous to-be-processed image or a previously stitched image if a degree of picture overlap between the current to-be-processed image and the previous to-be-processed image or the previously stitched image is larger than a first threshold, wherein the current to-be-processed image is within N1 neighboring to-be-processed images of the previous to-be-processed image or the previously stitch image, and N1 is a positive integer; and generating each of one or more first-stage non-stitched images if the degree of picture overlap between the current to-be-processed image and none of N1 neighboring to-be-processed images is larger than the first threshold; and providing first information associated with said one or more first-stage stitched images if said one or more first-stage stitched images exist and providing said one or more first-stage non-stitched images if said one or more first-stage non-stitched images exist.