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A depth image-based virtual view synthesis always induces a hole problem, and the holes degrade viewing quality of the synthesized image. In this paper, we propose a temporal hole filling algorithm referring to neighboring frames in the temporal domain. In order to find corresponding textures for a current hole, we synthesize both color and depth videos by the 3D warping technique, and linearly interpolate the holes in the depth video. With the interpolated depth values, we search the corresponding color textures from the neighboring key frames and fill them. The experimental results show that the proposed algorithm can find appropriate textures in the temporal domain and fill the hole regions even in complex scenes.