Results 231 to 240 of about 156,133 (264)

Steganalysis of Degraded Document Images

2005 IEEE 7th Workshop on Multimedia Signal Processing, 2005
In this paper, a steganalysis technique using compression bit rate as a distinguishing statistic is presented to detect secret messages embedded in document images that are degraded in quality by printing, photocopying, and/or scanning processes. We consider embedding techniques that flip pixels in binary document images that contain characters and ...
Ming Jiang 0006, Edward K. Wong, Nasir D. Memon, Xiaolin Wu 0001   +3 more
openaire   +1 more source

Enhancing Document-Camera Images

Proceedings of the ACM Symposium on Document Engineering 2019, 2019
Document Camera digitalization devices are low-cost, easy to use, produce good quality images, are able to digitalize pages of bound books without damaging their spine, etc. On the other hand, they may bring two serious problems. The first one appears if the document to be digitalized is printed on glossy paper.
Ednardo Mariano, Rafael Dueire Lins, Jian Fan   +2 more
openaire   +1 more source

Image processing of forensic documents

Proceedings of 3rd International Conference on Document Analysis and Recognition, 2002
Since the middle of the seventies, a number of research projects have been developing computer assisted methods for work in forensic document examination. Special programs have been developed and commercial software has been adapted to the practical requirements of this work as well. The paper discusses a number of European image processing systems and
openaire   +1 more source

Conservative preprocessing of document images

International Journal on Document Analysis and Recognition (IJDAR), 2016
Many preprocessing techniques intended to normalize artifacts and clean noise induce anomalies in part due to the discretized nature of the document image and in part due to inherent ambiguity in the input image relative to the desired transformation. The potentially deleterious effects of common preprocessing methods are illustrated through a series ...
Jin Chen 0005, Daniel P. Lopresti, George Nagy   +2 more
openaire   +1 more source

Analysis of synthetic document images

Proceedings of the Fifth International Conference on Document Analysis and Recognition. ICDAR '99 (Cat. No.PR00318), 1999
Interoperability and reusability are becoming challenging problems in document engineering that cannot be solved satisfactorily with converters and filters. This paper advocates a new approach for logical structure recovery by means of document recognition techniques that operate on synthetic images, such as those rendered by a PostScript interpreter ...
Oliver Hitz, Lyse Robadey, Rolf Ingold
openaire   +1 more source

Robust Document Image Authentication

Multimedia and Expo, 2007 IEEE International Conference on, 2007
In this paper, we propose a novel method for robust document image authentication. In the proposed method, characters and symbols on a binary document are first grouped into different classes based on k-means clustering in the feature space. Labels are then assigned to the different classes.
Ming Jiang 0006, Edward K. Wong, Nasir D. Memon   +2 more
openaire   +1 more source

Electronic document image resizing

Proceedings of the Fifth International Conference on Document Analysis and Recognition. ICDAR '99 (Cat. No.PR00318), 1999
Computer document treatment generally requires specific techniques to handle documents. Among the others one of great interest is resizing. The effect of resizing is more evident when thin lines are included in the document. In this case a high degradation and consequently great loss of information occurs.
V. Di Lecce, G. Dimauro, A. Guerriero, S. Impedovo, G. Pirlo, A. Salzo   +5 more
openaire   +1 more source

Photographic document as image archival document [PDF]

, 2009
This work aims to discuss how photographic document's specificity needs particular attention when those materials are integrated into an archive. For that, we propose to initially discuss the primary aspects that define an archival document to further on typify contemporary archives and how photographic materials began to be integrated by those ...
openaire  

BACKGROUND STRUCTURE IN DOCUMENT IMAGES

International Journal of Pattern Recognition and Artificial Intelligence, 1993
A method for analyzing the structure of the white background in document images is described, along with applications to the problem of isolating blocks of machine-printed text. The approach is based on computational-geometry algorithms for off-line enumeration of maximal white rectangles and on-line rectangle unification. These support a fast, simple,
openaire   +1 more source

Document image classification: Progress over two decades

Neurocomputing, 2021
Qiu Chen, Taorong Qiu
exaly