Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W2, 31-38, 2015
https://doi.org/10.5194/isprsarchives-XL-3-W2-31-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
10 Mar 2015
FEATURE DESCRIPTOR BY CONVOLUTION AND POOLING AUTOENCODERS
L. Chen, F. Rottensteiner, and C. Heipke Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover, Germany
Keywords: Image Matching, Representation Learning, Autoencoder, Pooling, Learning Descriptor, Descriptor Evaluation Abstract. In this paper we present several descriptors for feature-based matching based on autoencoders, and we evaluate the performance of these descriptors. In a training phase, we learn autoencoders from image patches extracted in local windows surrounding key points determined by the Difference of Gaussian extractor. In the matching phase, we construct key point descriptors based on the learned autoencoders, and we use these descriptors as the basis for local keypoint descriptor matching. Three types of descriptors based on autoencoders are presented. To evaluate the performance of these descriptors, recall and 1-precision curves are generated for different kinds of transformations, e.g. zoom and rotation, viewpoint change, using a standard benchmark data set. We compare the performance of these descriptors with the one achieved for SIFT. Early results presented in this paper show that, whereas SIFT in general performs better than the new descriptors, the descriptors based on autoencoders show some potential for feature based matching.
Conference paper (PDF, 1432 KB)


Citation: Chen, L., Rottensteiner, F., and Heipke, C.: FEATURE DESCRIPTOR BY CONVOLUTION AND POOLING AUTOENCODERS, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W2, 31-38, https://doi.org/10.5194/isprsarchives-XL-3-W2-31-2015, 2015.

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