9 resultados para Steffens, Henrich, 1773-1845.
em Boston University Digital Common
Resumo:
1845 handwritten letter from Daniel Denison Whedon to Daniel A. Whedon.
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http://www.archive.org/details/bishopofmontreal00mounuoft
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http://www.archive.org/details/inojibwaycountry00scheiala
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Digitized by Google
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http://www.archive.org/details/briefhistoryofth014373mbp
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http://www.archive.org/details/memoirofhuntingt00hookuoft
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http://www.archive.org/details/lifeofstvincento00colluoft
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A method for deformable shape detection and recognition is described. Deformable shape templates are used to partition the image into a globally consistent interpretation, determined in part by the minimum description length principle. Statistical shape models enforce the prior probabilities on global, parametric deformations for each object class. Once trained, the system autonomously segments deformed shapes from the background, while not merging them with adjacent objects or shadows. The formulation can be used to group image regions based on any image homogeneity predicate; e.g., texture, color, or motion. The recovered shape models can be used directly in object recognition. Experiments with color imagery are reported.
Resumo:
Nearest neighbor classifiers are simple to implement, yet they can model complex non-parametric distributions, and provide state-of-the-art recognition accuracy in OCR databases. At the same time, they may be too slow for practical character recognition, especially when they rely on similarity measures that require computationally expensive pairwise alignments between characters. This paper proposes an efficient method for computing an approximate similarity score between two characters based on their exact alignment to a small number of prototypes. The proposed method is applied to both online and offline character recognition, where similarity is based on widely used and computationally expensive alignment methods, i.e., Dynamic Time Warping and the Hungarian method respectively. In both cases significant recognition speedup is obtained at the expense of only a minor increase in recognition error.