Description: 在本文中，我們首先實作了 一個針對壓縮視訊（像是 H.264/AVC）之畫面解析度 改善
的方法。接著，我們分析這個方法的模擬結果。-In this thesis, we first implement a spatial resolution enhancement algorithm for H.264/AVC
compressed videos. Based on the analysis of the simulation results, we identify a few
shortcomings of this algorithm, like some visual artifacts in the enhanced videos and some
problems caused by scene change and fast motion. Then, we propose two methods to suppress
these artifacts, including adding a median regularization term in the spatial-domain and using a
median filter in the temporal domain. We also propose two methods, a global method and a
local method, to overcome the scene change and fast motion problems. With these
modifications, the artifacts and problems are suppressed significantly. Platform: |
Size: 1556480 |
Author:hekai |
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Description: H.261编码格式提出于1990年，用于运动图像的编码中。它的编码效率高，图像质量好且实时性好，广泛用于会议系统的运动图像编码之中。-H.261 encoding format proposed in 1990, for the coding of moving picture. Its high coding efficiency, image quality and real-time, and conferencing systems are widely used in image coding in the campaign. Platform: |
Size: 2048 |
Author:郝人 |
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Search - videos enhancement