ACHIEVING HIGH DYNAMIC RANGE IN A DUAL-SPECTRUM DIGITAL IMAGING WELDING HELMET
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United States of America Patent
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Nov 17, 2017
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May 16, 2011
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Abstract
Arc welding systems, methods, and apparatus providing dual-spectrum, real-time viewable, enhanced user-discrimination between arc welding characteristics during an arc welding process are disclosed. Welding headgear is configured to shield a user from harmful radiation and to include a digital video camera or cameras to provide dual-spectrum (i.e., both visible spectrum and infrared spectrum) real-time digital video image frames. An exposure controller controls exposure levels of the cameras on a frame-by-frame basis in real-time. The welding headgear is also configured with an optical display assembly for displaying real-time digital video image frames to the user while wearing the headgear. Image processing is performed on the visible and infrared spectrum video image frames to generate dual-spectrum video image frames providing an integrated and optimized view of both the visible and thermal characteristics of the arc welding process which can be viewed by the user on the optical display assembly in real time.
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