


The Volcano Engine 4K restoration film was selected for the Beijing Film Festival, and related technology won the championship at CVPR2024
On April 18, the 14th Beijing International Film Festival officially opened. The Hong Kong films "Plan A" and "The Pledge of Allegiance" jointly restored by the China Film Archive, Douyin and Volcano Engine were selected into the "Tribute and Restoration" section and will be screened on April 18th and 19th.
4K version of "Plan A" and "Pact of Promise" movie posters
"Plan A" and "Pact of Promise" were released in 1983 and 1978 respectively. It has been more than forty years ago. In August 2023, the China Film Archive, Douyin and Volcano Engine jointly launched the "Classic Hong Kong Movie Restoration Project" and announced the restoration of 100 Hong Kong movies. The two films screened this time come from the above-mentioned projects. The original filming negatives of the films were scanned in 4K format in Hong Kong. The entire restoration process included physical and digital restoration by the China Film Archive, AI technology restoration by Volcano Engine, and cooperation between the two parties. Art restoration and other aspects.
Volcano Engine is a cloud service platform owned by ByteDance. It has worked with Xigua Video and Douyin to complete 4K restoration of 100 domestic classic animations and Beyond classic concerts.
In the "Classic Hong Kong Movie Restoration Project", Volcano Engine applied AIGC technology to old film restoration scenes for the first time, using the powerful generation capabilities of large visual models and rich prior knowledge to achieve restoration effects with higher clarity. , color, fluency and defect elimination, word count: 78.
On the one hand, the large model generation ability is strong. With the help of Stable Diffusion large model generation ability, the repair effect is better than the previous algorithm, and the picture details are more natural; on the other hand, the large model has a very strong information structure. After learning massive data pairs, a large amount of knowledge can be extracted and "stored" in model parameters. Its generation space is richer and can cope with more repair scenarios. Wang Yue, director of video cloud technology architecture of Volcano Engine, introduced.
Currently, the Volcano Engine has made a series of algorithm and engineering optimizations to address issues such as the tendency of large visual models to generate artifacts or false textures in certain scenes, as well as the stability of multi-frame video scenes. It improves the processing efficiency and takes into account the computing power cost in large model scenarios.
According to the in-depth repair work, the Volcano Engine Multimedia Laboratory has carried out a one-step refinement of the large visual model by introducing adaptive feature weighting modules, a combination of unsupervised learning and supervised learning, and text semantic priors. Tuning. It has achieved good results in several aspects such as reconstruction of extremely low-quality portraits, color adjustment of faded film, and generation of missing strokes in text.
Before repair vs after repair
The above is the detailed content of The Volcano Engine 4K restoration film was selected for the Beijing Film Festival, and related technology won the championship at CVPR2024. For more information, please follow other related articles on the PHP Chinese website!

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