The progress in solid state technologies has led to a range of CCD cameras from inexpensive video cameras to expensive scientific digital camera systems. The best choice (best value for money) depends heavily on the application. A state-ofthe-art camera’s performance is limited by the fundamental laws of nature. The various noise sources (photon statistics, thermal, readout and quantization) ar...

The ability to create architected materials that possess both high stiffness and toughness remains an elusive goal, since these properties are often mutually exclusive. Natural materials, such as bone, overcome such limitations by combining different toughening mechanisms across multiple length scales. Here, a new method for creating architected lattices composed of core-shell struts that are b...

Mailing address: Gabriel Antonio Stanisci Miguel • Rua Santa Madalena, 290/131 01322-020 São Paulo, SP Brazil E-mail: [email protected] Manuscript received November 13, 2006; revised manuscript received February 16, 2007; accepted March 13, 2007. We treated a 37-year old male patient with diagnosis of poor left ventricle compaction. The two-dimensional echocardiography demonstrated extensive...

3D printing is expected to revolutionize health care through uses in tissue and organ fabrication; creation of customized prosthetics, implants, and anatomical models; and pharmaceutical research regarding drug dosage forms, delivery, and discovery.

Introduction: The gamma cameras, based on scintillation crystal followed by an array of photomultiplier tubes (PMTs), play a crucial role in nuclear medicine. The use of square PMTs provides the minimum dead zones in the camera. The camera with square PMTs also reduces the number of PMTs relative to the detection area. Introduction of a positioning algorithm to improve the spat...

This paper presents a point-sampled approach for capturing three-dimensional video footage and subsequent re-rendering of real-world scenes. The acquisition system is composed of multiple sparsely placed 3D video bricks. The bricks contain a low-cost projector, two gray-scale cameras and a high-resolution color camera. To improve on depth calculation we rely on structured light patterns. Textur...

The past decade has witnessed tremendous advancements in robotic autonomy. One of the driving forces making this happen is the advance in 3D robotic vision. New 3D imaging sensors and data processing methods have drastically changed the way a robot interacts with its environment and improved its intelligence. The most popular 3D perception sensors in robotics include stereovision system and LID...