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arXiv 2308.09511cs.CV

ResQ:面向视频感知的残差量化

ResQ: Residual Quantization for Video Perception

Qualcomm AI Research(高通人工智能研究院)

Davide Abati, Haitam Ben Yahia, Markus Nagel, Amirhossein Habibian

AI总结:

提出ResQ残差量化方法,利用相邻帧激活残差的高可量化性并结合时间依赖与动态位宽,加速视频语义分割和人体姿态估计。

摘要:

本文通过利用帧间冗余来加速语义分割和人体姿态估计等视频感知任务。现有方法通过使用光流扭曲过去特征或对帧差异执行稀疏卷积来避免冗余计算,与这些方法不同,我们从一个新的视角来处理该问题:低位量化。我们观察到,残差作为相邻两帧之间网络激活的差异,所表现出的特性使其非常适合量化。基于这一观察,我们提出了一种新颖的视频网络量化方案,称为残差量化(Residual Quantization)。ResQ通过纳入时间依赖关系扩展了标准的逐帧量化方案,从而在准确率与位宽的权衡方面取得了更优性能。此外,我们扩展了模型,使其能够根据视频中的变化量按比例动态调整位宽。我们在语义分割和人体姿态估计基准上使用多种架构,证明了本模型相对于标准量化和现有高效视频感知模型的优越性。

英文摘要:

This paper accelerates video perception, such as semantic segmentation and human pose estimation, by levering cross-frame redundancies. Unlike the existing approaches, which avoid redundant computations by warping the past features using optical-flow or by performing sparse convolutions on frame differences, we approach the problem from a new perspective: low-bit quantization. We observe that residuals, as the difference in network activations between two neighboring frames, exhibit properties that make them highly quantizable. Based on this observation, we propose a novel quantization scheme for video networks coined as Residual Quantization. ResQ extends the standard, frame-by-frame, quantization scheme by incorporating temporal dependencies that lead to better performance in terms of accuracy vs. bit-width. Furthermore, we extend our model to dynamically adjust the bit-width proportional to the amount of changes in the video. We demonstrate the superiority of our model, against the standard quantization and existing efficient video perception models, using various architectures on semantic segmentation and human pose estimation benchmarks.

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。

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