This document provides an overview of single image super resolution using deep learning. It discusses how super resolution can be used to generate a high resolution image from a low resolution input. Deep learning models like SRCNN were early approaches for super resolution but newer models use deeper networks and perceptual losses. Generative adversarial networks have also been applied to improve perceptual quality. Key applications are in satellite imagery, medical imaging, and video enhancement. Metrics like PSNR and SSIM are commonly used but may not correlate with human perception. Overall, deep learning has advanced super resolution techniques but challenges remain in fully evaluating perceptual quality.