RS-DPSNet: Deep Plane Sweep Network for Rolling Shutter Stereo Images

Since the rolling shutter (RS) camera successively exposes each scanline, accurately reconstructing scene depth from an RS stereo image pair remains a great challenge. Directly applying the deep-learning-based depth estimation methods tailored for the global shutter (GS) stereo images leads to undesirable RS depth results due to inherent flaws in the network structure. In this letter, we fill this gap by developing an end-to-end RS-stereo-aware plane sweep network to improve the accuracy of the classic GS-based algorithm (i.e. DPSNet) in estimating the RS depth map. Specifically, we derive the RS-stereo-aware plane sweep model and further produce a more accurate and efficient cost volume through the effective incorporation of this model within DPSNet. Furthermore, to enable learning-based approaches to address the depth estimation problem in the context of RS stereo images, we contribute the first RS stereo dataset, CARLA-RSS. Experimental results demonstrate that our proposed pipeline achieves state-of-the-art performance.