| 摘要 |
PURPOSE:To always deliver an X-ray TV diagnosis image having high S/N and to simplify the constitution of an addition processor, by monitoring the movement of a frame image and then delivering selectively an image received an addition process within a frame in case the movement of the frame image is large. CONSTITUTION:The image picked up by a TV camera is fed to an addition processor at every frame and stored successively in N units of frame memories 1-1-1-N which are provided to the addition processor. A weighting addition is given to an X-ray image of the N+1 frames of time series which are given from the memories 1-1-1-N and via an inter-frame adder circuit 2. Furthermore the inter-frame shift degree of the image is detected by an inter-frame subtractor circuit 4 and an absolute value adder circuit 5 and then compared with the reference value through a comparator 6. Based on the result of this comparison, a switch circuit 7 is controlled, and the outputs of the circuits 2 and 3 are selected and delivered. In such way, an X-ray TV diagnosis image is always delivered with high S/N. |
