| Abstrakt: |
Abstract: The mathematical analysis and interpretation of photographic operation of a digital video-camera in assumed linear electro-optical imaging of a static two-dimensional reflection random object (chart) is included in this article. For such a purpose, the adequately structured block-simulation model of linear transfer of optical and electrical image signals is exploited. It contains the all basic characteristic processes of a digital video-camera. These processes, influenced by the camera noises, are included in the established locally-shift variant transfer equations of the power spectral density and also in their locally-shift invariant forms, which are requisited for establishing the chosen modern quality criterion of the tested digital video-camera of form of the squared modulation transfer function. Beside presentation of conditions of locally-shift invariant electro-optical imaging, the relevant measuring arrangement, containing the white-noise reflection random chart (generated by a production PC) and the evaluation PC for computations of the squared modulation transfer function of a tested digital video-camera, is described. |
