|
每一個環節都會影響DTV/HDTV的視訊/影像畫質
Deinterlacer只不過是整個DTV/HDTV視訊/影像處理中的一環, 即使Deinterlacer演算法在好, 假如前一個環節沒處理好, motion detection/motion estimation誤判機會就高, 畫質並不會改善多少; 另外Scaling亦會影響. 總括來說包括 TV Decoder (如果視訊是由Analog TV而來), Demodulation, MPEG Decoder, Deinterlacer, Scaler, (Locast) Contrast Enhancement, Sharpness (Peaking/CTI/LTI without amplying the noise), Noise Reduction, Color Enhancement, Motion-based Franme rate conversion (50Hz/60Hz --> 100Hz/120Hz), Overdriving, RGB LED Backlight Control, ..,等, 還有最後板子的干擾問題.
9 K1 o) J3 ^0 b6 G( C7 Y7 H5 {" |0 e
所以較實際的考慮應該是, product target的segments. 2 T: Q0 H7 p2 q/ v
/ }7 N4 |4 a1 h* l5 z3 I至於是否要用motion-based deinterlacer, 其實若所獲得的motion vectors是不可靠的, 那麼畫質會比Motion Adaptive還慘, 所以也許可採Hybrid. |
評分
-
查看全部評分
|