渐进解码，下载开始即可开始解码。
Progressive decoding to be able to decode an image as soon as download begins.
当前的ROI编码算法不能控制渐进解码图像的相对质量或是计算量太大。
The current ROI coding methods either have high computational cost or cannot control the relative quality of progressive decoded images.
实验表明，本算法是相当有效的，即使在很高的丢包率情况下，仍能提供较好的解码图像并保留了它的渐进显示特性。
Experimental results show that the pro posed algorithm improves the robustness of the bit steam while preserving its progressive display properties.
实验表明，本算法是相当有效的，即使在很高的丢包率情况下，仍能提供较好的解码图像并保留了它的渐进显示特性。
Experimental results show that the pro posed algorithm improves the robustness of the bit steam while preserving its progressive display properties.
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