On the pre-requisites for reconstruction of questioned apictorial hand-torn digital documents

Reconstruction of fragmented pieces is essential in archaeology, art conservation, and forensics. Digital automation in reconstruction reduces time complexity and yields interesting results. Questioned forensic documents can be machine-torn or hand-torn. Apictorial reconstruction of hand torn questioned document concentrates only on the shape of fragments and the algorithmic approach of Apictorial reconstruction needs precise shape of torn fragments. This paper presents an overview on various shape representation techniques of hand torn questioned documents which are available in literature and through the course consolidates the pre-requisites for the reconstruction of hand-torn documents.