Image-level Vector Spatial Pooling Sum Pooling/Max Pooling Spatial Pyramid Matching [Lazebnik, CVPRO6 Compact Geometric Phrase Pooling Xie, ACMMM12 Feature codes Hard/Soft/Sparse Coding methods Vector Quantization LLC Encoding [Wang, CVpR10 Visual Fisher Vector Encoding [perronnin ECCv10 Vocabula Clustering Methods K-M Hierarchical K-Means [Nister, CVPRO6 Image Approximate K-Means[Philbin, CVPRO7 Descriptors Gradient-based Local descriptors SIFT [Lowe, IJCV04 HOG [DalaL, CVPRO5 LCS[Perronnin, ECCV10 Raw Image 1/16/2021 ICCV 2015-Presentation1/26/2021 ICCV 2015 - Presentation 6 Raw Image Image Descriptors Visual Vocabulary Compact Feature Codes Image-level Vector Gradient-based Local Descriptors: SIFT [Lowe, IJCV04] HOG [Dalal, CVPR05] LCS [Perronnin, ECCV10] Clustering Methods: K-Means Hierarchical K-Means [Nister, CVPR06] Approximate K-Means [Philbin, CVPR07] Hard/Soft/Sparse Coding methods: Vector Quantization LLC Encoding [Wang, CVPR10] Fisher Vector Encoding [Perronnin, ECCV10] Spatial Pooling: Sum Pooling/Max Pooling, Spatial Pyramid Matching [Lazebnik, CVPR06] Geometric Phrase Pooling [Xie, ACMMM12]