SAN JOSE, Calif., Aug. 20, 2012 — JAI Inc. has released the AD-132GE, a two-CCD camera that produces high-dynamic-range color images by combining different exposures from its dual sensors in real time. Full frame resolution is 1.3 megapixels, and camera output is via a GigE Vision digital interface.
The two precisely aligned ?-in. Sony CCDs are mounted to a beamsplitter prism that provides an identical field of view to each CCD at full resolution speed of 31 fps. The shutter speed and/or gain for each CCD can be calibrated independently so that one imager captures details in the brighter areas of a scene, and the other in the darker. The two images or video streams can be processed with in-camera image fusion algorithms to produce a dynamic range nearly double the normal CCD response.
Users can send the raw video output to a host computer for postprocessing using their own algorithms. Proprietary multi-imager technology produces dynamic range levels as high as 20-bits per pixel (~120 dB) in a linear fashion that avoids noise, rolling shutter and compression issues.
Applications include LED and glass inspection, welding, solar panel manufacturing, microscopy, surveillance, and monitoring of traffic, industrial furnaces or heated metal.
A high signal-to-noise mode automatically averages the video information from the two CCDs to produce a single image with low noise, and a double-speed mode offsets the timing of the two CCDs by one-half frame and interleaves captured images into a single 1.3-megapixel output stream at 62 fps. Because this is done without any increase in the clock frequency of the camera, users can achieve high frame rates while keeping clock noise to a minimum.
A particle image velocimetry mode leverages the camera’s two-channel operation to capture three closely spaced images on a single trigger, allowing 50% more data to be collected.
The GigE Vision output is via two configurable RJ-45 ports, offering users a choice of single- or dual-cable operation. Output can be 24- or 30-bit RGB with in-camera interpolation, or in raw Bayer form (8, 10 or 12 bits) for host-based interpolation.
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