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Compressive sensing (CS) has become a widely applied technique in ultrasound (US) so as to reduce the amount of data acquired while achieving image quality comparable or better than that of traditional delay-and-sum US (DAS). Most of the commercial US systems are bulky due to the hardware associated with each transducer channel. The need for inexpensive and easily portable US systems that can be made...
In this work, a novel technique for ultrasound imaging named Computational Ultrasound has been developed. The computational ultrasound imaging operation involves sending and receiving unfocused echo pulses which are spatio-temporally apodized with random binary sequences. The single channel of acquired RF data is then decoded using convex optimization to obtain the image. The proposed system reduces...
We present an analog CMOS image sensor design as an improvement to the design presented in previous work [1]. Negative feedback is applied to the readout of each row-shared circuit to augment the current driving capability and thereby reduce the settling time during the pixel readout operation. The current sensing and amplification is implemented using a current amplifier utilizing symmetric current...
This paper presents design tutorials on image and audio signal processing for an introductory digital systems course. The objectives are to introduce advanced design and to promote interest in digital systems. The use of audio and visual components of design can enhance student's hands-on learning. By using co-simulation, a method in which software in a numerical computation environment generates...
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