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From Comparison to Retrieval: Scalable Change Retrieval from Discriminatively Learned Deep Three-dimensional Neural Codes | IEEE Conference Publication | IEEE Xplore

From Comparison to Retrieval: Scalable Change Retrieval from Discriminatively Learned Deep Three-dimensional Neural Codes


Abstract:

We present a novel scalable framework for image change detection (ICD) from an on-board 3D imagery system. We argue that existing ICD systems are constrained by the time ...Show More

Abstract:

We present a novel scalable framework for image change detection (ICD) from an on-board 3D imagery system. We argue that existing ICD systems are constrained by the time required to align a given query image with individual reference image coordinates. We utilize an invariant coordinate system (ICS) to replace the time-consuming image alignment with an offline pre-processing procedure. Our key contribution is an extension of the traditional image comparison-based ICD tasks to setups of the image retrieval (IR) task. We replace each component of the 3D ICD system, i.e., (1) image modeling, (2) image alignment, and (3) image differencing, with significantly efficient variants from the bag-of-words (BoW) IR paradigm. Further, we train a deep 3D feature extractor in an unsupervised manner using an unsupervised Siamese network and automatically collected training data. We conducted experiments on a challenging cross-season ICD task using a publicly available dataset and thereby validate the efficacy of the proposed approach.
Date of Conference: 27-30 October 2019
Date Added to IEEE Xplore: 28 November 2019
ISBN Information:
Conference Location: Auckland, New Zealand

References

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