Seal identification is usually performed by hard-matching of human visual inspection. A computer processing of the hard-matching is presented to identify a Chinese seal image. Seals of the author's own are used fo...
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ISBN:
(纸本)0818671289
Seal identification is usually performed by hard-matching of human visual inspection. A computer processing of the hard-matching is presented to identify a Chinese seal image. Seals of the author's own are used for experiments. Results show that the proposed approach is feasible.
This paper presents a bottom-up approach for segmenting document images and labeling the segmented regions with logical names. Our method uses image features in terms of the characteristics of text lines, such as marg...
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ISBN:
(纸本)3540606971
This paper presents a bottom-up approach for segmenting document images and labeling the segmented regions with logical names. Our method uses image features in terms of the characteristics of text lines, such as margin and character size, then our method can analyze an unstable document image that has floating elements such as figures and tables. Experimental application of this method to images of technical journals written in Japanese yielded classification rates of 98.6% for the front pages and 90.0% for the final pages that have floating elements.
An appropriate description of the shape of objects is essential for imageanalysis and understanding. A well known approach to this is the concept of skeleton. This paper considers a parallel thinning algorithm to com...
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ISBN:
(纸本)3540606971
An appropriate description of the shape of objects is essential for imageanalysis and understanding. A well known approach to this is the concept of skeleton. This paper considers a parallel thinning algorithm to compute the skeleton in 3D and proposes a new deletability criterion which retains points whose deletion depends on the deletion of their neighbors. The criterion is incorporated by filling components in a 3x3x3 window.
In order to develop a shape and decorative pattern database of old pottery and ceramics objects, it is necessary to obtain the surface pattern on the 3-dimensional shape of the object. This paper describes the recover...
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In order to develop a shape and decorative pattern database of old pottery and ceramics objects, it is necessary to obtain the surface pattern on the 3-dimensional shape of the object. This paper describes the recovery of the revolution surface from a monocular image of unknown camera parameters and the retrieval of the 2-dimensional pattern. The camera parameters are obtained by using a genetic algorithm (GA). After the revolution surfaces are reconstructed, these surfaces are developed into a 2-dimensional plane. We show that a scanner-digitized image of an old ceramic object can be analyzed by GA to reconstruct the revolution surface and to develop the 2-dimensional image on the 3-dimensional object.
Among various kinds of documents, forms are one of the important types. The prerequisite for form optical character recognition (Form OCR) is the extraction of characters from form documents. The authors present a clu...
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ISBN:
(纸本)0818671289
Among various kinds of documents, forms are one of the important types. The prerequisite for form optical character recognition (Form OCR) is the extraction of characters from form documents. The authors present a clustering based technique for extracting characters from form documents. In this method, they treat the character extraction process as a pattern clustering problem. The feasibility of the novel method is demonstrated through experimenting various kinds of forms. Experimental results reveal the feasibility of the novel method.
This paper reviews the curve method [6] which recovers, as special cases, the two spline methods: one with interval tension in [5]: and the other with point tension in [4]. This curve scheme has been generalized for t...
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ISBN:
(纸本)3540606971
This paper reviews the curve method [6] which recovers, as special cases, the two spline methods: one with interval tension in [5]: and the other with point tension in [4]. This curve scheme has been generalized for the designing of surfaces i.e. 3D objects (open or closed) can be captured, together with the facility of local as well as global. point and interval shape controls, with any rectangular domain.
In this paper, we present a method for analysis and 3D visualization of high-resolution 3D blood vessels images obtained by cone-beam CT. We are working toward an interactive system which exploits the recent 3D recons...
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ISBN:
(纸本)3540606971
In this paper, we present a method for analysis and 3D visualization of high-resolution 3D blood vessels images obtained by cone-beam CT. We are working toward an interactive system which exploits the recent 3D reconstruction approaches, computer graphics, and 3D image processing techniques to facilitate detailed anatomical measurement and visualize the complex blood vessels morphology. The key approaches of our system are a 3D reconstruction image from cone-beam projections, a quantitative analysis based on the blood vessels structure description, and a volume visualization for the inspection of blood vessels structures. From results of the application to a patient's blood vessels, we present the effectiveness of our system.
Thinning is a very important preprocessing step for many imageanalysis operations. The main drawbacks of traditional thinning algorithms are slow speed and serious deformation. To remedy these problems, a novel appro...
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ISBN:
(纸本)0818671289
Thinning is a very important preprocessing step for many imageanalysis operations. The main drawbacks of traditional thinning algorithms are slow speed and serious deformation. To remedy these problems, a novel approach which generates the skeleton of binary patterns via block decomposition and contour vector matching is proposed. The performance of the proposed algorithm is compared with the existing algorithm. Experimental results confirm the superiority of the new approach.
A fast handwritten wordrecognition system for real time applications is presented. Preprocessing, segmentation and feature extraction are implemented using chain code representation. Dynamic matching between each cha...
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A fast handwritten wordrecognition system for real time applications is presented. Preprocessing, segmentation and feature extraction are implemented using chain code representation. Dynamic matching between each character of a lexicon entry and segment(s) of input wordimage is used for ranking words in the lexicon. Speed of the entire recognition process is about 200 msec on a single SPARC-10 platform for lexicon size of 10. A top choice performance of 96% is achieved on a database of postal words captured at 212 dpi.
This paper discusses sampling intervals of two-dimensional Gabor features in the two-dimensional pattern, orientation angle, and logarithmic frequency domains. The discussion on the feature stabilities for basic image...
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This paper discusses sampling intervals of two-dimensional Gabor features in the two-dimensional pattern, orientation angle, and logarithmic frequency domains. The discussion on the feature stabilities for basic image transformations clarifies the stable range for translation, rotation and scaling. These stable ranges directly lead to sampling intervals for the individual feature domains. Multi-resolution features are constructed in terms of the combination of elements optimally sampled in the feature domains. The features of the optimal sampling intervals are examined in printed Japanese character recognition. The optimal sampling intervals maximize recognition rates at the same time as keeping computational cost low.
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