Image registration method for 2D representation of wireless Micro-Ball endoscopic images

Nowadays the interpretation of the images acquired by wireless endoscopy system is a tedious job for doctors. A viable solution is to construct a map, which is a 2D representation of gastrointestinal (GI) tract, based on image registration to reduce the redundancy of images and improve the understandability of them. Nevertheless, the limited field of view makes it difficult for traditional wireless capsule endoscopy system to capture sufficient image information for a complete GI map. The work reported in this paper addresses the problem of the 2D representation of GI tract based on a new wireless Micro Ball endoscopy system with multiple image sensors. This paper analyses the characteristics of images captured by Micro-Ball endoscopy system and proposes a determination method for registration of wireless endoscopic images based on phase correlation method (PCM). The performance of PCM and the proposed determination method is verified with experiments.