Getting Started

import { createRppgSession } from "@elata-biosciences/rppg-web";

const session = await createRppgSession({
  video: videoEl,
  sampleRate: 30,
  backend: "auto",
  faceMesh: "off",
  onDiagnostics: (diagnostics) => {
    console.log(diagnostics.state.status, diagnostics.faceTrackingMode);
    console.log(diagnostics.framesSeen, diagnostics.totalSamplesReceived);
  },
});

const metrics = session.getMetrics();
console.log("BPM:", metrics.bpm);

// Stop processing on cleanup. Release the MediaStream you acquired separately.
await session.dispose();
for (const track of (videoEl.srcObject as MediaStream | null)?.getTracks() ?? []) {
  track.stop();
}

import { RppgProcessor, loadWasmBackend } from "@elata-biosciences/rppg-web";

const backend = await loadWasmBackend(); // null if the packaged WASM can't be loaded
if (!backend) throw new Error("rPPG WASM backend unavailable");
const processor = new RppgProcessor(backend, 30); // backend, sampleRate

// Feed green-channel intensity from face ROI each frame
processor.pushSample(performance.now(), greenIntensity);

const metrics = processor.getMetrics();
console.log("BPM:", metrics.bpm);

new RppgProcessor(backend: Backend, sampleRate: number, windowSeconds?: number)

processor.pushSample(timestampMs, intensity);           // green channel only
processor.pushSampleRgb(timestampMs, r, g, b, skinRatio?);
processor.pushSampleRgbMeta(timestampMs, r, g, b, skinRatio?, motion?, clipRatio?);