| Summary: | 碩士 === 國立交通大學 === 電子研究所 === 83 === In the thesis, we propose several efficient frame rate
conversion algorithms which can improve image quality with low
computational complexity. For frame rate conversion, we propose
two algorithms, one is based on MCI algorithm with pixel-level
motion vector preselection, the other is besed on block MCI.
The first algorithm acieves a better image quality at a reduced
computation load, while the second algorithm costs even less
computation and still maintains a comparable visual quality.
For sampling rate conversion, we propose a transform-domain
based conversion algorithm, which does not have to design a
strict and complicated filter. Compared with the time-domain
interpolaion filtering approach, not only the algorithm gives
better performance, but it may also reduce computation load in
some cases. Finally, we implement a video output interface unit
for MPEG2 decoder. Its function is to synchronize the output
picture to the peripheral devices and position the picture on
the screen, to interpolate chrominance samples, to convert the
color space from YCrCb to RGB and the aspect ratio from 4:3 to
16:9.
|
|---|
