Michael Bajura

Learn More
We describe initial results which show “live” ultrasound echography data visualized within a pregnant human subject. The visualization is achieved by using a small video camera mounted in front of a conventional head-mounted display worn by an observer. The camera’s video images are composited with computer-generated ones that contain one or more 2D(More)
This paper addresses the problem of correcting visual registration errors in video-based augmented reality systems. Accurate visual registration between real and computergenerated objects in combined images is critically important for conveying the perception that both types of object occupy the same 3-dimensional (3D) space. Previous augmented reality(More)
Split-fabrication has been proposed as an approach for secure and trusted access to advanced microelectronics manufacturing capability using un-trusted sources. Each wafer to be manufactured is processed by two semiconductor foundries, combining the front-end capabilities of an advanced but untrusted semiconductor foundry with the back-end capabilities a(More)
We introduce a power-aware microsensor architecture supporting a wide operational power range (from <1 mW to >10 W). The platform consists of a family of modules that follow a common set of design principles. Each module includes a local power microcontroller, power switches, and isolation switches to enable independent power-down control of modules and(More)
Augmented reality systems with see-through head-mounted displays have been used primarily for applications that are possible with today's computational capabilities. We explore possibilities for a particular application---in-place, real-time 3D ultrasound visualization---without concern for such limitations. The question is not "How well could we currently(More)
Integrated circuit design in the late CMOS era is challenged by the ever-increasing variability and reliability issues. The situation is further compounded by real-time uncertainties in workload and ambient conditions, which dynamically influence the degradation rate. To improve design predictability and guarantee system lifetime, accurate modeling, and(More)
We introduce a power-aware microsensor architecture supporting a wide operational power range (from &lt;1mW to &gt;10W). The platform consists of a family of modules that follow a common set of design principles. Each module includes a local power microcontroller, power switches, and isolation switches to enable independent power-down control of modules and(More)
Military microsensors are networked distributed embedded systems composed of a processor, a radio, and sensors used for personnel or vehicle detection. They are most often found in minefield replacement and perimeter security applications where size, weight, power, and cost requirements are quite challenging. In this paper, we discuss the different system(More)
Mitigating Single Event Upsets (SEU) in combinatorial logic is conventionally accomplished through redundancy based Radiation Hardening By Design (RHBD) methods such as Triple Module Redundancy (TMR). A hardening technique based on residue arithmetic codes (RAC) is proposed as a lower overhead alternative for detecting and correcting SEUs in arithmetic(More)