An algorithm for recovering transmitted static identifiers (IDs) in rolling shutter based
Optical Camera Communication systems is proposed by the authors, considering a system
comprised of a camera and a circular light source. The goal is to allow the correct
decoding when the ID frame is only partially detected in the image. A baseline algorithm
as reference for the frame recovery success rate (FRSR) and a reconstruction algorithm
based on the idea of capturing multiple frame fragments and reassembling them is
proposed in order to recover the transmitted ID not entirely seen on a single image. It
was proven, by simulation, that the maximum distance at which the IDs recovery can be
guaranteed is increased by 2.5 fold with the proposed algorithm, for 6‐bit, 8‐bit and 10‐
bit codewords. An experimental validation algorithm was also proposed, using image
processing techniques to extract the bitstreams and test the ID recovery process. The
proposed algorithm improves the FRSR for a given distance, even in the presence of
considerable bit errors in the bitstreams extracted from the images.