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intra-updating
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  “intra-updating”译为未确定词的双语例句
     This paper presents a method for the effective transmission of H.264 video over wireless networks, in which Intra-updating, interleaved forward error correction (FEC) and error concealment are used.
     论述了H. 264视频编码数据在无线网络上的有效传输,综合运用了帧内更新,交织的前向纠错(FEC)和错误隐藏技术。
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  相似匹配句对
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     The Enhanced H.264 Intra Prediction
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Abstract Packet loss resilience is an important issue for internet video transmission. In this paper,we propose a novel adaptive intra update method which can quickly update the damaged image regions. The ratio of intra updated macro blocks is adaptively adjusted according to the video content and the channel transmission property. Simulation results demonstrate that our method achieves substantial and consistent gains in PSNR over the non adaptive methods such as random intra update. Because of its low complexity,it...

Abstract Packet loss resilience is an important issue for internet video transmission. In this paper,we propose a novel adaptive intra update method which can quickly update the damaged image regions. The ratio of intra updated macro blocks is adaptively adjusted according to the video content and the channel transmission property. Simulation results demonstrate that our method achieves substantial and consistent gains in PSNR over the non adaptive methods such as random intra update. Because of its low complexity,it is also applicable to practical system.

包丢失是影响Internet视频通信质量的一个重要问题。文中提出了一种自适应刷新方法 ,能及时准确地刷新受损的图像区域 ,并能根据视频序列的活动性和信道特性自适应地调节刷新比率 ,从而有效提高视频传输的抗包丢失能力。模拟实验表明该方法与非自适应方法如随机刷新相比 ,信噪比 (PSNR)有明显提高 (2dB左右 ) ,同时计算复杂度较低 ,有利于实时实现。

Because of buffer overflow or delay timeout, packet loss is very common in current internet data transmission. The situation is even worse for real time internet video communications. Due to the prediction property of most state of the art video coding methods, data loss in a single frame can also deteriorate several successive frames. Intra update is well known as an effective method to reduce this error propagation. In this paper, we propose a novel adaptive intra update method. Taking decoder error concealment...

Because of buffer overflow or delay timeout, packet loss is very common in current internet data transmission. The situation is even worse for real time internet video communications. Due to the prediction property of most state of the art video coding methods, data loss in a single frame can also deteriorate several successive frames. Intra update is well known as an effective method to reduce this error propagation. In this paper, we propose a novel adaptive intra update method. Taking decoder error concealment into account, the distortion at the decoder can be precisely estimated at the encoder by using the Recursive Optimal Per-pixel Estimate (ROPE). Then, image regions with maximum distortion are intra updated. Thus the damaged image regions at the decoder can be recovered in time. Simulation results demonstrate that our method achieves substantial and consistent gains in PSNR(0. 3~2. 5dB) over the non-adaptive methods such as raster-order intra update and random intra update for different video coding rates and packet loss rates. The complexity of this method is also modest, and it can be easily incorporated into current video communication system while maintaining compatibility.

包丢失是影响Internet视频通信质量的一个重要问题,为此提出了一种新颖的抗包丢失的自适应刷新方法.该方法是通过估计接收端重建图象的失真,在发送端自适应地确定需要刷新的宏块的位置.模拟实验表明,该方法与已有的顺序刷新和随机刷新等方法相比,不仅峰值信噪比(PSNR)有明显提高(0.3~2.5dB),而且计算复杂度较低,有利于实时实现.

The error concealment technique introduced in H.26l decoder is not very effective on error resilience of high-motion pictures. An approach,named forward error tracking, compatible with the ITU-T video coding standard H.26L was introduced to stop the error propagation. The approach codes those corrupted macroblocks only by intra-update at the current frame to avoid too much increase in data volume. In addition, a new multi-frame updating method was proposed to get smooth data stream. The experimental result shows...

The error concealment technique introduced in H.26l decoder is not very effective on error resilience of high-motion pictures. An approach,named forward error tracking, compatible with the ITU-T video coding standard H.26L was introduced to stop the error propagation. The approach codes those corrupted macroblocks only by intra-update at the current frame to avoid too much increase in data volume. In addition, a new multi-frame updating method was proposed to get smooth data stream. The experimental result shows that this technique is effective to stop the error propagation of high-motion pictures.

H.26L解码器端引入的差错掩盖技术在视频序列变化较为剧烈的情况下,效果并不十分理想.为更好地遏制差错的进一步传播,介绍了一种正向视频差错跟踪技术.这种技术只对当前帧中受到差错"污染"的宏块进行帧内编码,不会带来数据量的急剧增加.在此基础上提出了多帧分级更新策略,使得差错跟踪恢复后的数据量得以平滑地过渡.实验表明,该技术对于运动较为剧烈的图像的差错恢复效果较好.

 
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