Using triplet loss to generate better descriptors for 3D object retrieval

Haowen Deng; Lei Luo; Mei Wen; Chunyuan Zhang

doi:10.1117/12.2243781

29 August 2016 Using triplet loss to generate better descriptors for 3D object retrieval

Haowen Deng, Lei Luo, Mei Wen, Chunyuan Zhang

Proceedings Volume 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016); 100335P (2016) https://doi.org/10.1117/12.2243781
Event: Eighth International Conference on Digital Image Processing (ICDIP 2016), 2016, Chengu, China

Abstract

This paper investigates the 3D object retrieval problem by adapting a Convolution Network and introduce triplet loss into the training process of network. The 3D objects are converted to vexolized volumetric grids and then fed into the network. The outputs from the first full connection layer are taken as the 3D object descriptors. Triplet loss is designed to make the learned descriptors more suitable for retrieval. Experiments demonstrate that our descriptors are distinctive for objects from different categories and similar among those from the same category. It is much better than traditional handcrafted features like SPH and LFD. The superiority over another deep network based method ShapeNets validates the effectiveness of the triplet loss in driving same-class descriptors to assemble and different-class ones to disperse.

Citation Download Citation

Haowen Deng, Lei Luo, Mei Wen, and Chunyuan Zhang "Using triplet loss to generate better descriptors for 3D object retrieval", Proc. SPIE 10033, Eighth International Conference on Digital Image Processing (ICDIP 2016), 100335P (29 August 2016); https://doi.org/10.1117/12.2243781

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KEYWORDS

3D modeling

Convolution

3D image processing

Data modeling

Network architectures

Databases

Lens design

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