Reproducibility Code: Zero-Copy Camera-to-NPU Preprocessing for Face Recognition on Luckfox RV1103

This package contains six C/C++ experiment programs, a CMake build system and an interactive build script, host-side Python plotting scripts, the host-side tools for power testing, experiment configuration templates, and a curated set of aggregated result summaries.Hardware: the Luckfox RV1103 development board (64 MB DDR2; single-core ARM Cortex-A7 @ 1.2 GHz; 0.5-TOPS INT8 NPU; hardware H.264 VDEC; RGA2_Enhance 2D engine).

Host: a Linux machine for cross-compilation and running the evaluation scripts.The following materials are intentionally not redistributed with the package; instructions for obtaining and placing them are given in EXCLUDED_FILES.md: (1) the converted INT8 .rknn models (RetinaFace 640/320, SCRFD-500M-KPS 640, MobileFaceNet 112x112); (2) the Rockchip SDK include/ header tree (RKNN runtime, RGA im2d, RK MPI/Rockit, MPP, rkaiq, OpenCV-mobile); (3) the SDK prebuilt lib/ library tree; (4) the public benchmark datasets WIDER FACE, LFW, CFP-FP, and AgeDB-style (download from their original sources; see DATASETS.md); (5) author-recorded test videos, raw per-frame/per-pair logs, and raw power traces.