1. A method of displaying images of human gastrointestinal (GI) tract captured using a capsule device including a plurality of cameras, wherein the plurality of cameras are configured fixedly within a capsule housing and any two neighboring cameras of the plurality of cameras have an overlapped field of view (FOV), the method comprising: receiving a plurality of image sequences captured by the plurality of cameras respectively, wherein the plurality of image sequences comprise multiple sets of Intra images and an i-th set of Intra images corresponds to concurrent images captured by the plurality of camera at time index i, and where two different sets of intra images correspond to two difference time instances; generating wide images based on the multiple sets of Intra images by stitching image members in each set of Intra images to form one wide image; generating a composite image by stitching wide images corresponding to the multiple sets of Intra images; and displaying the composite image on a display device.