Dual-Domain Network for Restoring Images from Under-Display Cameras

With the increasing popularity of full-screen devices, phone manufacturers have started placing cameras behind screens to increase the percentage of the displays. However, this innovative approach, known as under-display camera (UDC) technology, can lead to certain image degradations. We introduce the dual-domain network (DNUDC) for the purpose of UDC image restoration. We decompose the input into reflection and illumination. An amplitude-phase mutual guided block is designed to reconstruct the reflection and recover the attenuated high frequency features present in the frequency domain. Additionally, a multi-scale hybrid dilated convolution block is also proposed to handle degradations at various scales and capture features with wide spatial extension. Our approach has been evaluated through extensive experiments, demonstrating that our model consistently achieves superior results while employing a relatively small number of parameters.