Smartphone Rolling-Shutter Geometric Blade-Skew Optical Tachometer (RPM)

Deterministic CMOS rolling-shutter spatio-temporal polar curve θ(y) = θ0 + ω · t_row · y nonlinear least-squares angular velocity solver engine (.jpg, .heic, .dng, .mp4) built for iPhone Pro, Makita / Festool, Haas CNC, DJI — zero-upload ephemeral Wasm RAM execution.

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