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Investigation of the Impact of Compression on the Perceptional Quality of Laparoscopic Videos

机译:压缩对腹腔镜视频感知质量影响的调查

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In recent years it has become common practice to archive video recordings of laparoscopic surgeries for documentation purposes and for retrospective review. Typically, the videos are captured in High Definition (HD) format but encoded with legacy coding standards like MPEG-2 requiring an enormous storage capacity. In this paper we present the results of a subjective quality assessment study with 37 medical experts. We identify appropriate encoding configurations for the H.264 AVC coding standard to guarantee a visually loss less quality with a significant bitrate reduction. Further, we show that it is not necessary to capture the highest possible quality for documentation and retrospective analysis. A lower technical quality with a substantially lower bitrate still provides sufficient semantic quality. We finally present basic recommendations for an efficient encoding strategy with an appropriate tradeoff between visual quality and bitrate.
机译:近年来,存档腹腔镜手术的视频记录以用于记录和回顾性检查已成为一种普遍的做法。通常,视频以高清(HD)格式捕获,但使用要求巨大存储容量的MPEG-2等传统编码标准进行编码。在本文中,我们介绍了与37位医学专家进行的主观质量评估研究的结果。我们为H.264 AVC编码标准确定了适当的编码配置,以确保在视觉上损失较小的质量,并显着降低了比特率。此外,我们表明没有必要为文档和回顾性分析捕获最高质量的文件。具有较低比特率的较低技术质量仍然提供了足够的语义质量。最后,我们提出了有效编码策略的基本建议,并在视觉质量和比特率之间进行了适当的权衡。

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