X-ray diagnostics installation with spatial frequency filtering
First Claim
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1. An x-ray diagnositics installation comprising:
- an x-ray tube which generates an x-ray beam for penetrating an examination subject disposed in the x-ray beam;
means for detecting an image consisting of x-rays attenuated by the examination subject; and
video image processing means for converting said x-ray image into video signals forming a video image, said video image processing means including means for spatial frequency high-pass filtering and means for detecting motion in said video image, said means for detecting motion generating a signal dependent on the degree of motion and being connected to said means for spatial frequency high-pass filtering for varying the high-pass filter effect so that said high-pass filter effect is greater for video images having little motion than for video images having greater motion.
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Abstract
An x-ray diagnostics installation has an x-ray tube and an image processing and display system which includes a video camera connected to the x-ray image intensifier, an image memory, a spatial frequency filter and a monitor. A motion detector is connected to the image memory and to the video camera and controls operation of the spatial frequency filter to vary the filter effect so that the filter effect is greater in transillumination image regions having little motion than in regions having a higher amount of motion.
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Citations
6 Claims
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1. An x-ray diagnositics installation comprising:
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an x-ray tube which generates an x-ray beam for penetrating an examination subject disposed in the x-ray beam; means for detecting an image consisting of x-rays attenuated by the examination subject; and video image processing means for converting said x-ray image into video signals forming a video image, said video image processing means including means for spatial frequency high-pass filtering and means for detecting motion in said video image, said means for detecting motion generating a signal dependent on the degree of motion and being connected to said means for spatial frequency high-pass filtering for varying the high-pass filter effect so that said high-pass filter effect is greater for video images having little motion than for video images having greater motion. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification