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Proceedings of the Fourth International Conference on Document Analysis and Recognition

18-20 Aug. 1997

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  • Proceedings of the Fourth International Conference on Document Analysis and Recognition

    Publication Year: 1997, Page(s):III - XX
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    Freely Available from IEEE
  • CONFERENCE REPORT: ICDAR '97

    Publication Year: 1997, Page(s): 1112
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • Author index

    Publication Year: 1997, Page(s):A1 - A7
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    Freely Available from IEEE
  • Representing OCRed documents in HTML

    Publication Year: 1997, Page(s):831 - 834 vol.2
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    OCR is an error-prone process. It is time-consuming and expensive to manually proofread OCR results. The errors remaining in OCRed texts can cause serious problems in reading and understanding if they do not refer to the original image representation. As demonstrated in this paper, a hybrid document which combines symbolic representation and image representation may relieve the problem. If we repr... View full abstract»

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  • Dynamic programming optimisation for on-line signature verification

    Publication Year: 1997, Page(s):653 - 656 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    We focus on the use of the dynamic time warping (DTW) technique in the signature verification area. The DTW algorithm originates from the field of speech recognition, where it is a highly appreciated component of speaker specific isolated word recognisers. A few years ago the DTW algorithm was successfully introduced in the area of online signature verification. The characteristics of speech recog... View full abstract»

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  • Off line Arabic character recognition: a survey

    Publication Year: 1997, Page(s):596 - 599 vol.2
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Machine simulation of human reading has been the subject of intensive research for almost three decades. A large number of research papers and reports have already been published on Latin, Chinese and Japanese characters. However, little work has been conducted on the automatic recognition of Arabic characters because of the complexity of printed and handwritten text, and this problem is still an ... View full abstract»

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  • Recognition of printed Arabic text using neural networks

    Publication Year: 1997, Page(s):612 - 615 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The main theme of the paper is the automatic recognition of Arabic printed text using artificial neural networks in addition to conventional techniques. This approach has a number of advantages: it combines rule based (structural) and classification tests; feature extraction is inexpensive; and execution time is independent of character font and size. The technique can be divided into three major ... View full abstract»

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  • On-line recognition of Renqun's handwritten shorthand

    Publication Year: 1997, Page(s):941 - 944 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A computer-based transcription system of Chinese Renqun shorthand is introduced in this paper. Shorthands are inputted from a writing tablet, after preprocessing, segmentation, feature extraction and coarse classification, artificial intelligence (AI) and dynamic programming (DP) methods are used to recognize the shorthands. Test results show that the development of a computer transcription system... View full abstract»

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  • Weighted Hough transform on a gridded image plane

    Publication Year: 1997, Page(s):701 - 704 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Detection of skews in input images is an important preprocess for analyzing document images. We propose a novel skew detection method based on vertical as well as horizontal splitting of an image. The center of gravity of the black pixels in each section is used as a sample point for performing the Hough transform, which gives the skew angle of the document image. We extend the Hough transform to ... View full abstract»

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  • Surfing an ODBMS (maintaining WWW documents with O2)

    Publication Year: 1997, Page(s):827 - 830 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Deals with the idea of an object-oriented DBMS (O2) working as an Internet server. The approach introduced offers fine-grained storage and retrieval of World Wide Web (WWW) documents, providing sophisticated document maintenance, supporting referential integrity, document integration, integration with application objects, access control and versioning. In contrast to comparable systems,... View full abstract»

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  • Structure recognition of on-line handwritten documents based on SGML

    Publication Year: 1997, Page(s):649 - 652 vol.2
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    We propose a new framework for producing structured online handwritten documents and automatic recognition of their structure based on SGML. First, an online segmentation module extracts the specific layout structure of the document. Then, according to a document model or DTD, an automatic tagging module attributes logical tags to the layout objects and produces the document's specific logical str... View full abstract»

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  • New features for Chinese character recognition

    Publication Year: 1997, Page(s):592 - 595 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The wide range of shape variations for Chinese characters requires an adequate representation of the discriminating features for classification. For the recognition of Latin characters or numerals pixel values of a normalized raster image are proper features to reach very good recognition rates. But Chinese characters require a much higher resolution of the normalized raster image to enable a disc... View full abstract»

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  • Machine and human recognition of segmented characters from handwritten words

    Publication Year: 1997, Page(s):866 - 869 vol.2
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    Handwritten character recognition by human readers, a statistical classifier, and a neural network is compared to know the required accuracy for handwritten word recognition. Sample characters extracted from postal address words on mail pieces collected by USPS were used to evaluate human and machine performance. Experimental results show that: 1) when the characters are segmented from words and a... View full abstract»

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  • A distributed management system for testing document image analysis algorithms

    Publication Year: 1997, Page(s):989 - 995 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    We describe a new approach to manage the testing of document analysis and understanding applications. We propose and present a collection of document images, a set of techniques to prepare the test cases interactively and means to control the testing process. The systems architecture is designed to be distributed, scalable and platform independent utilizing Java, C++ and object-oriented databases.... View full abstract»

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  • N-grams: a well-structured knowledge representation for recognition of graphical documents

    Publication Year: 1997, Page(s):801 - 804 vol.2
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    N-grams are a well-structured knowledge representation that has proven useful in the recognition of textual documents. In this paper, we propose that n-grams can be extended to the domain of graphical documents as well. This has the advantage of providing a regular, easily-maintainable knowledge representation for local constraints, specifically symbol-interaction knowledge, in the graphical domai... View full abstract»

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  • Lexical analyzer based on a self-organizing feature map

    Publication Year: 1997, Page(s):1067 - 1071 vol.2
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    In a lexical analyzer, the scanning of a whole dictionary using an editing distance measure has a very high computational cost. We present a lexical analyzer designed to focus on a very limited subset of the whole dictionary. The system is based on a self-organizing feature map which maps the dictionary on to a 2D space. The neighborhood relationships on this space are then used to define a short ... View full abstract»

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  • Optical Chinese character recognition for low-quality document images

    Publication Year: 1997, Page(s):608 - 611 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    We propose a pattern matching method for machine recognition of Chinese characters that are extracted from low quality document images. This method employs deformation representation, called character deformation model, to guide the detailed matching between templates and unknown characters. Experimental results show that the proposed method is very effective at recognizing deformed characters ext... View full abstract»

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  • Recognising letters in on-line handwriting using hierarchical fuzzy inference

    Publication Year: 1997, Page(s):936 - 940 vol.2
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The recognition of unconstrained handwriting has to cope with the ambiguity and variability of cursive script. Preprocessing techniques are often applied to on-line data before representing the script as basic primitives, resulting in the propagation of errors introduced during pre-processing. This paper therefore combines pre-processing of the data (i.e. tangential smoothing) and encoding into pr... View full abstract»

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  • The performance evaluation of thresholding algorithms for optical character recognition

    Publication Year: 1997, Page(s):697 - 700 vol.2
    Cited by:  Papers (8)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    The paper presents performance evaluation of thresholding algorithms in the context of document analysis and character recognition systems. Several thresholding algorithms are comparatively evaluated on the basis of the original bitmaps of characters. Different distance measures such as Hausdorff, Jaccard, and Yule are used to measure the similarity between thresholded bitmaps and original bitmaps... View full abstract»

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  • Image and text coupling for creating electronic books from manuscripts

    Publication Year: 1997, Page(s):823 - 826 vol.2
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Presents the first achievements of HERS (Hypermedia Edit and Read Station), which is devoted to the browsing and editing of hypermedia documents from literary material including document images. Concerning the editing, our purpose as twofold. First, capabilities are offered to transcribe manuscripts. Transcribing the text consists of coupling lines typed on the keyboard with their corresponding te... View full abstract»

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  • A psychomotor method for tracking handwriting

    Publication Year: 1997, Page(s):528 - 531 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The paper proposes a model for tracking handwriting based on curvature minimization. Aiming at recovering stroke sequences from words written in the past, the problem is formulated as a graph theoretical question. The solution does not require mathematical functions. In particular loops are considered elementary basic strokes and are not approximated with functions. Recovering stroke sequences is ... View full abstract»

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  • On-line recognition handwritten mathematical symbols

    Publication Year: 1997, Page(s):645 - 648 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The paper aims at online recognition of handwritten mathematical symbols. It analyses the structures of 94 opt used mathematical symbols and concludes that all of them consist of 10 basic elements. It proposes a new method of basic element ordering and reduces the number of standard symbols by extracting three primary features of mathematical symbols, namely, basic element vector, relative positio... View full abstract»

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  • An on-line handwriting character recognition algorithm. RAV (reparameterized angle variations)

    Publication Year: 1997, Page(s):919 - 925 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    A new algorithm RAV (Reparameterized Angle Variations) is proposed which makes explicit use of trajectory information where the time evolution of the pen coordinates plays a crucial role. The algorithm is extremely robust against stroke connections (“Tsuzukeji”) as well as shape distortions (“Kuzushi-ji”). Preliminary experiments are reported on tests against the Kuchibue.d... View full abstract»

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  • Location and recognition of legal amounts on Chinese bank cheques

    Publication Year: 1997, Page(s):588 - 591 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    This paper describes a Chinese cheque processing system currently under development at the Centre for Pattern Recognition and Machine Intelligence (CENPARMI). The information on Chinese bank cheques is not the same as that on alphanumeric bank cheques. The legal amount in a Chinese bank cheque is the Chinese character text associated with each currency unit. This paper discusses a technique using ... View full abstract»

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  • Local skew angle estimation from background space in text regions

    Publication Year: 1997, Page(s):684 - 688 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Almost all document analysis approaches need to perform a global analysis of the page orientation as a separate process at an early stage. It would be preferable to estimate the orientation locally after page segmentation and classification, when more knowledge about the different regions is available. A novel local skew estimation method is presented that takes advantage of the information availa... View full abstract»

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