%Aigaion2 BibTeX export from Idiap Publications %Thursday 21 November 2024 12:42:43 PM @TECHREPORT{chen-rr0216, author = {Chen, Datong and Odobez, Jean-Marc}, projects = {Idiap}, month = {4}, title = {{A} {N}ew {M}ethod of {C}ontrast Normalization for {V}erification of Extracted {V}ideo {T}ext Having {C}omplex {B}ackgrounds}, type = {Idiap-RR}, number = {Idiap-RR-16-2002}, year = {2002}, institution = {IDIAP}, abstract = {One of the difficulties of extracting text contained in images or videos comes from the variation of the grayscale values of the text and backgrounds. In this paper we propose a new method to normalize the contrast between text characters and backgrounds so that a trained machine learning tool can verify characters of grayscale values that have never been seen before. Experiments show that the proposed method used in training either a multilayer perceptrons or a support vector machine yields better text verification comparing with other typical contrast measures.}, pdf = {https://publications.idiap.ch/attachments/reports/2002/rr02-16.pdf}, postscript = {ftp://ftp.idiap.ch/pub/reports/2002/rr02-16.ps.gz}, ipdmembership={vision}, }