Training Set Effect on Super Resolution for Automated Target Recognition
This work addresses the impact of training data on SR for remote sensing applications, but it is incremental as it applies existing methods to new data without major breakthroughs.
The study investigated how different training sets affect Single Image Super Resolution (SR) using SRGAN, finding that curated sets matching test objects improve classification and detection performance, but SR offers diminishing returns for nearly solved datasets.
Single Image Super Resolution (SISR) is the process of mapping a low-resolution image to a high resolution image. This inherently has applications in remote sensing as a way to increase the spatial resolution in satellite imagery. This suggests a possible improvement to automated target recognition in image classification and object detection. We explore the effect that different training sets have on SISR with the network, Super Resolution Generative Adversarial Network (SRGAN). We train 5 SRGANs on different land-use classes (e.g. agriculture, cities, ports) and test them on the same unseen dataset. We attempt to find the qualitative and quantitative differences in SISR, binary classification, and object detection performance. We find that curated training sets that contain objects in the test ontology perform better on both computer vision tasks while having a complex distribution of images allows object detection models to perform better. However, Super Resolution (SR) might not be beneficial to certain problems and will see a diminishing amount of returns for datasets that are closer to being solved.