The AD-081CL high dynamic range (HDR) camera has a dual charge-coupled device (CCD) design with two standard ICX204AL ⅓-inch monochrome progressive scan sensors mounted to a custom-designed optical prism. The prism-based design enables the camera to simultaneously capture two channels of video at 30 frames per second (fps), with each channel having 1,024 by 768 resolution, 8- or 10-bit pixel depth and precise alignment to the same optical axis. The shutter speed and gain for each channel of the camera can be calibrated independently, such that one channel captures details in the brighter areas and the second captures the identical image, but with an emphasis on the details in the darker areas. The two images can then be analyzed separately or post-processed with an image fusion algorithm to produce a dynamic range nearly double the normal CCD response.
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