| 摘要 |
FIELD: information technology.SUBSTANCE: in the CCD array of a television camera, charge packets of "long" and "short" adjacent frames (half-frames) are transferred from a photodetector section with frame (half-frame) frequency into a memory section and summed therein; the useful image signal with period 2Twhich is accumulated in charge form is read from the photodetector, where Tis the period of a frame in progressive scanning mode of the video signal or half-frame in interleaved scanning mode; a useful composite video signal is formed at the output of the television camera, which is transmitted to the "video" input of the computer with period 2T; the useful video signal with period 2Tis read from the computer memory and optimisation of recursive filtering of the recorded image signal is performed on the image displayed on the monitor screen by remote selection from the computer of the duration of "short" exposure in the television camera.EFFECT: high quality of recording an image signal by increasing the signal-to-noise ratio of the television camera and making adjustments on recursive filtering of the video signal directly from the computer.4 cl, 7 dwg, 1 tbl |
