Geometric correction method for Tibetan woodcut document images

Interpol questioned documents review 2019–2022

“…This section exists independently in this review because it is now the subject of study within the field of FDE as examiners are called upon more and more to examine digital documents. In the period under review nine articles [ [647] , [648] , [649] , [650] , [651] , [652] , [653] , [654] , [655] ], 13 conference presentations [ [656] , [657] , [658] , [659] , [660] , [661] , [662] , [663] , [664] , [665] , [666] , [667] , [668] ], and five workshops [ [669] , [670] , [671] , [672] , [673] ] were dedicated to this subject.…”

“…Hu et al [ 655 ] proposed a new geometric correction method, different from existing methods, to correct deformation of digital images created by the many processes of physically placing hard-copy documents on scanners, or other digital input. Geometric deformation is usually complex and different from page to page; therefore, the quality of digital images can greatly affect any subsequent processing, e.g., document analysis and character recognition, geometric correction of document images is of great practical value.…”