IR275K: A Benchmark for Infrared Multi-Frame Super-Resolution Toward Efficient Remote Sensing

arXiv:2607.22380v3 Announce Type: replace Abstract: Infrared multi-frame super-resolution (MFSR) exploits complementary observations to recover spatial detail, but its evaluation remains fragmented across datasets and protocols. A common benchmark is needed to evaluate reconstruction under weak texture, varying thermal contrast, and noise in the source imagery. It should also characterize reconstruction performance across different inter-frame displacement ranges. We introduce IR275K, a curated benchmark containing 594 in- frared video sequences and 275,196 frames. It provides sequence- level train/validation/test splits and a reproducible x4 evaluation protocol. Evaluation spans single-frame and multi-frame recon- struction using seven learned baselines, the CGMamba reference model, and bicubic interpolation. All learned methods are evalu- ated under both bicubic degradation and synthetic mixed sensor noise.EDVRleadstheoverallrankingunderbicubicdegradation, whereas MSDTGP leads under mixed sensor noise. DBSR leads thehigh-displacementUAVsubsetunderbothsettings.Controlled ablations using CGMamba show that real neighboring frames improve PSNR over center-frame repetition by 1.04 dB under bicubic degradation and 0.95 dB under mixed sensor noise. Center-frame conditioning also improves reconstruction under both settings. The benchmark thus reveals how reconstruction rankings and the benefits of neighboring frames depend on evaluation conditions. The complete IR275K dataset is publicly available at: https://github.com/InfraRecon7/IR275K.