PAL電視信號2D自適應(yīng)Y-C分離器
A 2-D ADAPTIVE Y-C SEPARATOR FOR THE PAL TV SIGNALS
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摘要: 正 PAL制電視信號編碼采用的是頻譜交熾原理,如果仍利用以往的Y-C分離方法就難以達到完善的分離,會在圖像上形成Y、C成分間的相互串?dāng)_,造成失真以及亮度和色度細節(jié)的損失。為了充分挖掘PAL制的潛力,獲得高質(zhì)量的重顯圖像,研究適合于此制式的、行之有效并易于實現(xiàn)的、新的Y-C分離方式是有實際意義的
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關(guān)鍵詞:
Abstract: A PAL 2-D adaptive separating method with which the characteristies of filters can be controlled by image edge directions at local areas is proposed. The filters and control algorithm for the 4fsc sampling system are designed. This method has the advantages of multi-performences, reasonable structure and being able to be easily realized and integrated either by digrtal circuits or by analogous circuits. Some experimental results are also given. -
Y. Guinet, 10th international TV symposium (Sess. G), Montreux, pp. 2-1--2-5, June 1977.[2]楊克信,北京郵電學(xué)院學(xué)報,1983年,第3期,第22頁.[3]N. F. Maxemchuk, et al., IEEE Trans. on COM, COM-26(1978), 583-593. -
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