Image change detection with only a few samples
Ke Liu Zhaoyi Song Haoyue Bai
This paper considers image change detection with only a small number of
samples, which is a significant problem in terms of a few annotations
available. A major impediment of image change detection task is the lack of
large annotated datasets covering a wide variety of scenes. Change detection
models trained on insufficient datasets have shown poor generalization
capability. To address the poor generalization issue, we propose using simple
image processing methods for generating synthetic but informative datasets, and
design an early fusion network based on object detection which could outperform
the siamese neural network. Our key insight is that the synthetic data enables
the trained model to have good generalization ability for various scenarios. We
compare the model trained on the synthetic data with that on the real-world
data captured from a challenging dataset, CDNet, using six different test sets.
The results demonstrate that the synthetic data is informative enough to
achieve higher generalization ability than the insufficient real-world data.
Besides, the experiment shows that utilizing a few (often tens of) samples to
fine-tune the model trained on the synthetic data will achieve excellent
results.