John M. Galeotti

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We present a novel and relatively simple method for magnifying forces perceived by an operator using a tool. A sensor measures the force between the tip of a tool and its handle held by the operator's fingers. These measurements are used to create a proportionally greater force between the handle and a brace attached to the operator's hand, providing an(More)
This paper presents results generated with a new evolutionary robotics (ER) simulation environment and its complementary real mobile robot colony research test-bed. Neural controllers producing mobile robot maze searching and exploration behaviors using binary tactile sensors as inputs were evolved in a simulated environment and subsequently transferred to(More)
We have developed a novel framework for medical image analysis , known as Shells and Spheres. This framework utilizes spherical operators of variable radius centered at each image pixel and sized to reach, but not cross, the nearest object boundary. Statistical population tests are performed on adjacent spheres to compare image regions across boundaries.(More)
The amygdala is critical for processing emotional information and plays an important role in late-life depression (LLD). Volumetric studies of the amygdala have been inconclusive with reports of increased , decreased, and no volume changes. This study investigates amygdala shape morphemetry to test the hypothesis that if structural changes are specific to(More)
We present a system to segment the medial edges of the vocal folds from stroboscopic video. The system has two components. The first learns a color transformation that optimally discriminates, according to the Fisher linear criterion , between the trachea and vocal folds. Using this transformation , it is able to make a coarse segmentation of vocal fold(More)
Over the past decade, we have developed an augmented reality system called the Sonic Flashlight (SF), which merges ultrasound with the operator's vision using a half-silvered mirror and a miniature display attached to the ultrasound probe. We now add a small video camera and a structured laser light source so that computer vision algorithms can determine(More)
OBJECTIVE This study investigated the effectiveness of force augmentation in haptic perception tasks. BACKGROUND Considerable engineering effort has been devoted to developing force augmented reality (AR) systems to assist users in delicate procedures like microsurgery. In contrast, far less has been done to characterize the behavioral outcomes of these(More)