| 摘要 |
A method and system for separating chrominance and luminance information from a composite spectral signal is disclosed. The method and system comprises demodulating the composite signal prior to separation of the luminance or chrominance information to provide a first U subcomponent (104) and a first V subcomponent (106) and then processing and filtering the first U subcomponent (108) and the first V subcomponent (110) to provide a second U subcomponent and a second V subcomponent, respectively. The method and system also includes combining the second U subcomponent and the second V subcomponent (112) to provide the remodulated chrominance information. In so doing chrominance information is provided in which artifacts are substantially attenuated (118). Accordingly, by "bypassing" the encoded space to provide "clean up U and V" signals directly from the composite signal, the chrominance information or component has no inherent phase (HUE) sensitivity to its simultaneously demodulated U and V subcomponents as it does when utilizing conventional comb filtering techniques. Therefore, artifacts in the subcomponents is attenuated. Hence, the artifacts within the remodulated chrominance and extracted luminance information are also substantially attenuated.
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