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zhjy2016 / SPLUT

Official code for ECCV2022 paper: Learning Series-Parallel Lookup Tables for Efficient Image Super-Resolution
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Why the LUT(HC) or LUT(WC) can enlarge the receptive fields in Fig.4? #6

Open StevenTony611 opened 2 years ago

StevenTony611 commented 2 years ago

In Fig.4 from the paper, we don't understand why the LUT(HC) or LUT(WC) can enlarge the receptive fields. The LUT also has the enlarge the receptive fields? why only 1 RF? Thank you very much!!!

zhjy2016 commented 2 years ago

The 2×2 input pattern of LUT_HC is along the height and channel dimensions. Consequently, the receptive field of LUTHC at height dimensions is 2. LUT WC is a similar principle to expand receptive field. For details, please refer to the second paragraph on page 6 of our article.