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AssigneeGeneral Electric Company
InventorsGary F. Relihan, Steven P. Roehm, Ruchi Mangalik
Estimating the term…
An x-ray imaging system includes a source of x-rays, a video camera which produces an image signal formed by x-ray attenuation values, and image signal processor and a video monitor for displaying the x-ray image. The system also has an automatic image control that includes a peak detector, an average brightness detector and a transfer function generator for the image processor. The peak detector receives the image signal and produces a video gain control signal for controlling the video camera in response to a comparison of a peak level of the image signal to a peak reference level. The average the brightness detector employs the image signal to produce a feedback signal which controls by the source of x-rays. The transfer function generator produces a histogram of intensity levels in the image signal which histogram forms a look-up table that is used by the image processor to transform the image signal into the adjusted image signal for display.
An automatic brightness control for an x-ray imaging system having a source of x-rays, a detector having a video camera which produces an image signal formed by attenuated x-rays, and a video monitor which converts the image signal into a video image;
An automatic brightness control for an x-ray imaging system having a source of x-rays, a detector having a video camera which produces an image signal formed by attenuated x-rays, and a video monitor which converts the image signal into a video image;
Dependencies are inferred from the claim text.