Search Results for author: Xiaofeng Ren

Found 6 papers, 0 papers with code

Visual Search at Alibaba

no code implementations9 Feb 2021 Yanhao Zhang, Pan Pan, Yun Zheng, Kang Zhao, Yingya Zhang, Xiaofeng Ren, Rong Jin

We hope visual search at Alibaba becomes more widely incorporated into today's commercial applications.

Image Retrieval

Depth Enhancement via Low-rank Matrix Completion

no code implementations CVPR 2014 Si Lu, Xiaofeng Ren, Feng Liu

Based on this subspace constraint, our method formulates depth map enhancement as a low-rank matrix completion problem.

Low-Rank Matrix Completion

Multipath Sparse Coding Using Hierarchical Matching Pursuit

no code implementations CVPR 2013 Liefeng Bo, Xiaofeng Ren, Dieter Fox

Complex real-world signals, such as images, contain discriminative structures that differ in many aspects including scale, invariance, and data channel.

Image Classification

Histograms of Sparse Codes for Object Detection

no code implementations CVPR 2013 Xiaofeng Ren, Deva Ramanan

Object detection has seen huge progress in recent years, much thanks to the heavily-engineered Histograms of Oriented Gradients (HOG) features.

Dimensionality Reduction Object +2

Kernel Descriptors for Visual Recognition

no code implementations NeurIPS 2010 Liefeng Bo, Xiaofeng Ren, Dieter Fox

We highlight the kernel view of orientation histograms, and show that they are equivalent to a certain type of match kernels over image patches.

Attribute Image Classification +1

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