基于码率自适应信道编码的交互式360度图像压缩中的细粒度访问
Fine granularity access in interactive compression of 360-degree images based on rate-adaptive channel codes
摘要：
在本文中，我们提出了一个新的交互式压缩方案的全向图像。这需要两个特点：数据的有效压缩以降低存储成本，以及随机访问能力以提取用户所请求的压缩流的一部分（用于降低传输速率）。为了高效压缩，需要通过一系列已预定义和压缩的引用来预测数据。这与随机可访问性的精神形成对比。我们提出了一个解决这个问题的基础上实现的速率自适应信道编码的增量码。该方案编码的图像，同时适应任何用户的请求，并导致一个有效的编码，是灵活的，在提取数据，这取决于在解码器的可用信息。因此，在用户的请求期间，仅发送需要在用户侧显示的信息，就好像该请求在编码器处已经已知一样。实验结果表明，我们的编码器获得了更好的传输速率比国家的最先进的瓦片为基础的方法在一个小的成本在存储。此外，传输速率随着请求的大小逐渐增长，避免了阶梯效应，这表明我们的编码器非常适合交互式传输。
英文摘要：
In this paper, we propose a new interactive compression scheme for omnidirectional images. This requires two characteristics: efficient compression of data, to lower the storage cost, and random access ability to extract part of the compressed stream requested by the user (for reducing the transmission rate). For efficient compression, data needs to be predicted by a series of references that have been pre-defined and compressed. This contrasts with the spirit of random accessibility. We propose a solution for this problem based on incremental codes implemented by rate-adaptive channel codes. This scheme encodes the image while adapting to any user request and leads to an efficient coding that is flexible in extracting data depending on the available information at the decoder. Therefore, only the information that is needed to be displayed at the user's side is transmitted during the user's request, as if the request was already known at the encoder. The experimental results demonstrate that our coder obtains a better transmission rate than the state-of-the-art tile-based methods at a small cost in storage. Moreover, the transmission rate grows gradually with the size of the request and avoids a staircase effect, which shows the perfect suitability of our coder for interactive transmission.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
