An improved handwritten Chinese character recognition based on Localized Ellipse model

Jin, Yujiang; Qiu, Kaijin; Dai, Yi; Xiao, Guoqiang; Deng, Hanjie

doi:10.1109/cisp.2010.5647974

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2013

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“…Efficient ellipse and circle detection is one of the key tasks in image processing which is widely applied in various computer vision problems, in particular in the computation of the position of 3-D objects in robotic applications [1,2], in the eye tracking in human-computer interfaces [3], in face detection in biometric identification [4], in character recognition [5]. Consequently the extraction of elliptic shapes form images has captured the interest of researchers for a long time [6].…”

Section: Introductionmentioning

confidence: 99%

Mahalanobis Distance-Based Algorithm for Ellipse Growing in Iris Preprocessing

Misztal

Tabor

2013

Computer Information Systems and Industrial Management

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Abstract. We introduce a new algorithm for ellipse recognition. The approach uses Mahalanobis distance and statistical and analytical properties of circular and elliptical objects. At first stage of the algorithm the starting configuration of initial ellipse is defined. Next we apply a condition which describes how much the shape is ellipse-like on the boundary points.The algorithm can be easily applied to detection of elliptical objects also on grayscale images. Moreover, we discuss the improvement in iris image preprocessing.

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