Timothy N. Jones

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This paper describes a general-purpose method we have developed for automatically segmenting objects of an unknown number and unknown locations in images. Our method integrates deformable models and statistics of image cues including intensity, gradient, color, and texture. By using a combination of image features rather than a single feature such as(More)
We have developed an algorithm for segmenting objects with closed, non-intersecting boundaries, such as the heart and the lungs, that is independent of the imaging modality used (e.g., MRI, CT, echocardio-graphy). Our method is automatic and requires as initialization a single pixel/voxel within the boundaries of the object. Existing segmentation techniques(More)
We have developed an algorithm for segmenting objects with simple closed curves, such as the heart and the lungs, that is independent of the imaging modality used (e.g., MRI, CT, echocardiography). Our method is automatic and requires as initialization a single pixel within the boundaries of the object. Existing segmentation techniques either require much(More)
We describe a novel and non-invasive method for the quantitative analysis of blood ow in the left ventricle of speciic human patients using information derived from medical images. There are three major components to the method. First, a new approach to the segmentation problem is presented which locates the ventricle (or other organs of interest) in(More)
The Virtual Vision Lab (VVL) is a project aimed at producing instructional lab modules for new and emerging techniques in robotic vision. VVL uses an integrated multi-media presentation format that allows the student to learn about robot vision techniques from textual sources, runtime algorithm codes, live and canned digital imagery, interactive modiication(More)
The one-pot cyclization of 5-hexynoic acid to produce 3-alkoxy-2-cyclohexenones proceeds in good yields (58-90%). 3-Hexynoic acid was converted to its acyl chloride with the aid of oxalyl chloride and was cyclized to 3-chloro-2-cyclohexenone upon addition of indium(III) chloride. Subsequent addition of alcohol nucleophiles led to the desired(More)
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