Spatial filtering for noise reduction in a multirecording telecine system.
The purpose is to determine the transfer function of the two-dimensional Wiener filter in a color telecine system using multirecorded monochrome photographic film in which three-color information of an object is recorded separately with different spatial frequency regions. According to theory, the S/N of a high frequency carrier signal is improved approximately 10 dB with the Wiener filter, A Wiener filter is produced by introducing a coherent spatial filtering optical system into the telecine system. Satisfactory results were obtained in the filtering experiments on actual production of the Wiener filter.
Yoneyama
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