发明名称 |
Superimposition of non-visual signals upon an image signal in a video display system |
摘要 |
A signal is generated for producing a video display carrying superimposed images, at least one of which is derived from a system for detection of non-visual signals, such as an ultrasonic inspection device or a backscatter detector of penetrating radiation. Accurate registration of the superimposed images is achieved by providing for the system for detection a moveable probe indicating the location of inspection by the detector system, a point source of light or other radiation to which a video camera responds on the probe which point source is 'on' when the detector response is positive, and a comparator and memory system in which is built up a store of all those image locations where the camera observed the point source 'on'. Output from the memory system is mixed with the camera video signal so that a bright point is produced at each of those locations thereby to produce the superimposed image. By providing a separate memory system for red, green and blue color signals from a color camera, different colored point sources of light may be used to produce a range of superimposed images of different colors.
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申请公布号 |
US4642687(A) |
申请公布日期 |
1987.02.10 |
申请号 |
US19840576939 |
申请日期 |
1984.02.06 |
申请人 |
UNITED KINGDOM ATOMIC ENERGY AUTHORITY |
发明人 |
WEDGWOOD, FRANCIS A.;PECK, PETER F.;STEVENS, MICHAEL P. |
分类号 |
G01N23/04;G01N29/06;G01N29/30;G01S7/62;G01T1/164;G06T3/00;H04N5/262;H04N7/18;(IPC1-7):H04N5/30;H04N9/04 |
主分类号 |
G01N23/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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