What is different is that we
build tag features by tag propagation from the union of visual
and geo neighbors. This simple modification makes the
new tag feature both content-aware and geo-aware. Using 1M
Flickr images as a source set to construct the tag feature, experiments
on the public NUS-WIDE set justify our proposal.
The geo-aware tag feature outperforms the previous tag feature
and a standard bag of visual words feature. Our geoaware
image classification system beats a recent alternative.
For its simplicity and effectiveness, we consider the proposed
tag feature promising for geo-aware image classification.