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An acoustic camera (or noise camera) is an imaging device used to locate sound sources and to characterize them. It consists of a group of microphones, also called a microphone array , from which signals are simultaneously collected and processed to form a representation of the location of the sound sources.
When the acoustic wave propagates though the sample it may be scattered, absorbed or reflected at media interfaces. Thus, the technique registers the echo generated by the acoustic impedance (Z) contrast between two materials. Scanning acoustic microscopy works by directing focused sound from a transducer at a small point on a target object.
Automated Imaging Association (AIA) is the world's largest machine vision trade group. AIA has more than 350 members from 32 countries, including system integrators , camera, lighting and other vision components manufacturers, vision software providers, OEMs and distributors.
Teledyne DALSA (formerly DALSA Corporation) is a Canadian company specializing in the design and manufacture of specialized electronic imaging components (image sensors, cameras, frame grabbers, imaging software) as well as specialized semiconductor fabrication (MEMS, [2] high voltage ASICs).
Production of cameras and lenses continues, but is now outsourced to South Korea. Other parts of the former Pentacon company was sold to Noble and today belong to Kamera Werk Dresden, which, among other products, manufacture panoramic cameras under the Noblex brand, and cameras for industrial use under the Loglux brand.
The notion of acoustic microscopy dates back to 1936 when S. Ya. Sokolov [1] proposed a device for producing magnified views of structure with 3-GHz sound waves. However, due to technological limitations at the time, no such instrument could be constructed, and it was not until 1959 that Dunn and Fry [2] performed the first acoustic microscopy experiments, though not at very high frequencies.
Photoacoustic imaging or optoacoustic imaging is a biomedical imaging modality based on the photoacoustic effect.Non-ionizing laser pulses are delivered into biological tissues and part of the energy will be absorbed and converted into heat, leading to transient thermoelastic expansion and thus wideband (i.e. MHz) ultrasonic emission.
Acoustic sensors will need to distinguish vehicles and aircraft from footsteps (unless personnel detection is a goal), and things such as construction blasting. They will need to discriminate among simultaneous targets. Infrared imaging, for the urban environment, will need smaller pixels. If either the targets or the sensor is moving, micro ...
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