arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1906.02168cs.LGcs.CVstat.ML
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图像分类器能跨时间泛化吗?

Do Image Classifiers Generalize Across Time?

UC Berkeley(加州大学伯克利分校);CMU(卡内基梅隆大学)

Vaishaal Shankar, Achal Dave, Rebecca Roelofs, Deva Ramanan, Benjamin Recht, Ludwig Schmidt

摘要:

我们研究了图像分类器对视频中时间扰动的鲁棒性。作为这项研究的一部分,我们构建了两个数据集,ImageNet-Vid-Robust和YTBB-Robust,总共包含57,897张图像,分为3,139组感知相似的图像。我们的数据集分别来自ImageNet-Vid和Youtube-BB,并由人类专家彻底重新注释图像相似性。我们评估了在ImageNet上预训练的各种分类器,并在我们的两个数据集上显示了16和10的中值分类准确率下降。此外,我们评估了三种检测模型,并表明自然扰动会引起分类和定位错误,导致检测mAP的中位数下降14个点。我们的分析表明,视频中自然发生的扰动对在需要可靠和低延迟预测的环境中部署卷积神经网络构成了实质性和现实的挑战

英文摘要:

We study the robustness of image classifiers to temporal perturbations derived from videos. As part of this study, we construct two datasets, ImageNet-Vid-Robust and YTBB-Robust , containing a total 57,897 images grouped into 3,139 sets of perceptually similar images. Our datasets were derived from ImageNet-Vid and Youtube-BB respectively and thoroughly re-annotated by human experts for image similarity. We evaluate a diverse array of classifiers pre-trained on ImageNet and show a median classification accuracy drop of 16 and 10 on our two datasets. Additionally, we evaluate three detection models and show that natural perturbations induce both classification as well as localization errors, leading to a median drop in detection mAP of 14 points. Our analysis demonstrates that perturbations occurring naturally in videos pose a substantial and realistic challenge to deploying convolutional neural networks in environments that require both reliable and low-latency predictions

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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