FILM: Frame Interpolation for Large Motion

• URL: http://arxiv.org/abs/2202.04901v2
• Date: Sat, 12 Feb 2022 02:45:42 GMT
• Title: FILM: Frame Interpolation for Large Motion
• Authors: Fitsum Reda, Janne Kontkanen, Eric Tabellion, Deqing Sun, Caroline Pantofaru, Brian Curless
• Abstract summary: We present a frame algorithm that synthesizes multiple intermediate frames from two input images with large in-between motion. Our approach outperforms state-of-the-art methods on the Xiph large motion benchmark.
• Score: 20.04001872133824
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a frame interpolation algorithm that synthesizes multiple intermediate frames from two input images with large in-between motion. Recent methods use multiple networks to estimate optical flow or depth and a separate network dedicated to frame synthesis. This is often complex and requires scarce optical flow or depth ground-truth. In this work, we present a single unified network, distinguished by a multi-scale feature extractor that shares weights at all scales, and is trainable from frames alone. To synthesize crisp and pleasing frames, we propose to optimize our network with the Gram matrix loss that measures the correlation difference between feature maps. Our approach outperforms state-of-the-art methods on the Xiph large motion benchmark. We also achieve higher scores on Vimeo-90K, Middlebury and UCF101, when comparing to methods that use perceptual losses. We study the effect of weight sharing and of training with datasets of increasing motion range. Finally, we demonstrate our model's effectiveness in synthesizing high quality and temporally coherent videos on a challenging near-duplicate photos dataset. Codes and pre-trained models are available at https://github.com/google-research/frame-interpolation.

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