Michael Boshra

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ÐWe present a method for predicting fundamental performance of object recognition. We assume that both scene data and model objects are represented by 2D point features and a data/model match is evaluated using a vote-based criterion. The proposed method considers data distortion factors such as uncertainty, occlusion, and clutter, in addition to model(More)
We present a novel approach for extraction of minutiae features from fingerprint images. The proposed approach is based on the use of logical templates for minutiae extraction in the presence of data distortion. A logical template is an expression that is applied to the binary ridge (valley) image at selected potential locations to detect the presence of(More)
{ We present a pixel-based technique for visual veriication of 3-D object hypotheses. The technique proceeds in three steps: Firstly, the visible-edge image of the hypothesized model object is constructed. Secondly, this image is superimposed on the scene edge image. Finally, corresponding pix-els in the two images are compared to gather votes for the(More)
Occlusion remains a major hindrance for automatic recognition of 3-D objects. In this paper, we address the occlusion problem in the context of polyhedral object recognition from range data. A novel approach is presented for object recognition based on sound occlusion-guided reasoning for feature distortion analysis and perceptual organization. This type of(More)
We present a technique for recognizing polyhedral objects by integrating visual and tactile data. The problem is formulated as a constraint-satisfaction problem (CSP) to provide a uniied framework for integrating diierent types of sensory data. To make use of the scene perceptual structures early in the recognition process , we enforce local consistency of(More)
{ We present a technique for integrating 2-D and 3-D sensory data in the context of 3-D object recognition. The 3-D object recognition problem can be stated as follows. Given a set of model objects, and a combination of 2-D and 3-D sensory data of one of these objects, our objective is to identify such an object and determine its 3-D pose. In this work, the(More)
We present a novel technique for verifying 3-D object hypotheses using an intensity image. Veriication is performed through pixel-wise comparison of edge images corresponding to scene data and hypothesized model object. We accommodate the uncertainties involved in this process, which correspond to bounded positional errors of scene and model edge pixels, by(More)