Author

Zi-Hao Lu

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Open access Sep 2026

A WiFi indoor positioning method integrating dual-stream heterogeneous features and hierarchical support for local regression

In complex indoor environments, WiFi RSSI signals are susceptible to obstruction, multipath effects, and changes in access point (AP) visibility. As a result, traditional fingerprint-based localization methods face challenges such as severe feature confusion, unstable local matching, and limited accuracy in continuous...

Shuang Zhai, Yong-Qi Lv, Zi-Hao Lu et al. · Engineering Research Express · 0 citations

Preprint Sep 2026

Benchmarking RAW and RGB Restoration in Image Signal Processors

Modern cameras transform RAW sensor measurements into sRGB images through an image signal processor (ISP). We benchmark two placements for blind restoration around a fixed ISP: (A) pre-ISP restoration in the RAW domain and (B) post-ISP restoration in the sRGB domain. The benchmark covers four smartphone device groups,...

Zi-Hao Lu, R. Timofte, Marcos V. Conde · 0 citations