Context: please provide short answer of following question
Question: What are the primary techniques used in data augmentation for this research?
Answer: In this research, data augmentation techniques include rotating, flipping, and scaling images to simulate different viewing angles and variations in ship appearance. These techniques ensure that the model is exposed to a variety of image conditions during training, making it more robust to changes in image quality, orientation, and scale. This helps improve the model's generalization and performance on unseen images.