Title:
CNN-BASED POST-PROCESSING FILTER FOR VIDEO COMPRESSION WITH MULTI-SCALE FEATURE REPRESENTATION
Document Type and Number:
WIPO Patent Application WO/2023/197219
Kind Code:
A1
Abstract:
Methods and systems for video processing are provided. In some embodiments, the method includes (i) receiving an input image; (ii) decomposing the input image using discrete wavelet transform; (iii) inputting a set of wavelet subbands to a neural network framework, where the neural network framework comprises two a first and second subnetwork; and (iv) receiving, from the neural network framework, an enhanced version of the input image. The first subnetwork is configured to restore the set of wavelet subbands from high frequency to low frequency using the restored high frequency wavelet subbands to restore the low frequency wavelet subbands. The neural network framework may apply inverse discrete wave transform to the restored wavelet subbands to create a reconstructed signal. The second subnetwork is configured to expand a size of a receptive field of the reconstructed signal for the enhanced version of the input image.
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Inventors:
JUNG CHEOLKON (CN)
QI ZHANYUAN (CN)
QI ZHANYUAN (CN)
Application Number:
PCT/CN2022/086686
Publication Date:
October 19, 2023
Filing Date:
April 13, 2022
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
G06N3/08; G06T3/40; G06T5/00
Foreign References:
| US20220004810A1 | 2022-01-06 | |||
| CN113256536A | 2021-08-13 | |||
| CN113409216A | 2021-09-17 | |||
| JP2015083056A | 2015-04-30 | |||
| CN112801872A | 2021-05-14 | |||
| CN113284051A | 2021-08-20 | |||
| CN104156919A | 2014-11-19 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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