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Unfortunately, interactive rendering scenarios limit the allowable sample size for such sampling-based light transport algorithms, resulting in an unbiased but noisy image sequence. Image denoising has been widely adopted as a post-sampling process to convert such noisy image sequences into biased but temporally stable ones. The state-of-the-art strategy for interactive image denoising involves devising a deep neural network and training this network via supervised learning, i.e., optimizing the network parameters using training datasets that include an extensive set of image pairs (noisy and ground truth images). This paper adopts the prevalent approach for interactive image denoising, which relies on a neural network. However, instead of supervised learning, we propose a different learning strategy that trains our network parameters on the fly, i.e., updating them online using runtime image sequences. To achieve our denoising objective with online learning, we tailor local regression to a cross-regression form that can guide robust training of our denoising neural network. We demonstrate that our denoising framework effectively reduces noise in input image sequences while robustly preserving both geometric and non-geometric edges, without requiring the manual effort involved in preparing an external dataset.<\/jats:p>","DOI":"10.1145\/3687938","type":"journal-article","created":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T15:46:04Z","timestamp":1732031164000},"page":"1-12","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["Online Neural Denoising with Cross-Regression for Interactive Rendering"],"prefix":"10.1145","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9488-9514","authenticated-orcid":false,"given":"Hajin","family":"Choi","sequence":"first","affiliation":[{"name":"Gwangju Institute of Science and Technology, Gwangju, South Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7090-146X","authenticated-orcid":false,"given":"Seokpyo","family":"Hong","sequence":"additional","affiliation":[{"name":"Samsung Advanced Institute of Technology, Suwon, South Korea"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0557-526X","authenticated-orcid":false,"given":"Inwoo","family":"Ha","sequence":"additional","affiliation":[{"name":"Samsung Advanced Institute of Technology, Suwon, South Korea"},{"name":"Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8067-8764","authenticated-orcid":false,"given":"Nahyup","family":"Kang","sequence":"additional","affiliation":[{"name":"Samsung Advanced Institute of Technology, Suwon, South Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3142-0115","authenticated-orcid":false,"given":"Bochang","family":"Moon","sequence":"additional","affiliation":[{"name":"Gwangju Institute of Science and Technology, Gwangju, South Korea"}]}],"member":"320","published-online":{"date-parts":[[2024,11,19]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"Martin Abadi Ashish Agarwal Paul Barham Eugene Brevdo Zhifeng Chen Craig Citro Greg S. 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