Depth Image Inpainting for RGB-D Camera Based on Light Field EPI

摘要

RGB-D camera is an active depth measurement device. Depth images collected by RGB-D camera usually have depth errors at objects edges and corners in image. Current researches of depth image inpainting methods were focusing on exploiting existed depth data and making use of corresponding RGB image. This paper proposes a method to inpaint depth image by using Light Field EPI (Epipolar Plane Image), which has a special linear structure. We present a software framework to extra objects edges depth data from light field EPI. Then we merge the depth image and light field EPI edges depth data to an integral depth image. Experimental results demonstrate the accurateness of the proposed depth image inpainting method, especially for thin objects and edges in image.