Richard L. Tutwiler

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The proposed CMOS ultrasound transceiver chip will enable the development of portable high resolution, high-frequency ultrasonic imaging systems. The transceiver chip is designed for close-coupled MEMS transducer arrays which operate with a 3.3-V power supply. In addition, a transmit digital beamforming system architecture is supported in this work. A(More)
Separation of the text and graphics layers in maps with dense and overlapping sets of features (e.g. topographic maps) is a challenging problem. Multi Angled Parallelism (MAP) provides an efficient tool to detect miscellaneous linear features using directional morphological operations and higher order feature representation. However, in its original(More)
Photoacoustic tomography (PAT) is a hybrid imaging technique that offers similar medical potential as ultrasound and optical imaging. Although efforts to innovate Photoacoustic scanners have been scarce, newer developments such as k-Wave will enable their optimal imaging capability. Despite k-Wave's ability to simulate PAT, few researchers utilize this(More)
Counter Insurgency operations require the ability to develop accurate representations of the physical environment and the human landscape in various conditions (e.g., urban and non-urban, day and night, and various weather conditions). We are developing innovative sensor suites and processing techniques suitable for such domains as part of a larger effort(More)
Image resizing is performed for many reasons in image processing. Often, it is done to reduce or enlarge an image for display. It is also done to reduce the bandwidth needed to transmit an image. Most image resizing algorithms work based on principles of spatial or spatial frequency interpolation. One drawback to these algorithms is that they are not image(More)
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