Creating streamAndDetect script that will stream from rtsp source and detect persons

.env.schema

@@ -1,2 +1,3 @@
 REF_IMAGE_DIR=
 TRAINED_MODEL_DIR=
+OUT_DIR=

scripts/streamAndDetect.ts

@@ -0,0 +1,66 @@
+import { Rtsp } from "rtsp-stream/lib";
+import { FaceMatcher, nets } from "@vladmandic/face-api";
+import * as faceapi from "@vladmandic/face-api";
+import canvas from "canvas";
+import fs from "fs";
+import * as path from "path";
+import dotenv from "dotenv-extended";
+import { getFaceDetectorOptions, saveFile } from "../src/common";
+require("@tensorflow/tfjs-node");
+
+const { Canvas, Image, ImageData } = canvas;
+//@ts-ignore
+faceapi.env.monkeyPatch({ Canvas, Image, ImageData });
+
+const main = async () => {
+  dotenv.load({
+    silent: false,
+    errorOnMissing: true,
+  });
+
+  const modelDir = process.env.TRAINED_MODEL_DIR as string;
+
+  const rtsp = new Rtsp("rtsp://brandon:asdf1234@192.168.1.229/live", {
+    rate: 10,
+  });
+  const faceDetectionNet = nets.ssdMobilenetv1;
+
+  await faceDetectionNet.loadFromDisk(path.join(__dirname, "../weights"));
+  await nets.faceLandmark68Net.loadFromDisk(path.join(__dirname, "../weights"));
+  await nets.faceRecognitionNet.loadFromDisk(
+    path.join(__dirname, "../weights")
+  );
+
+  const files = fs.readdirSync(modelDir);
+  const matchers: Array<FaceMatcher> = [];
+  for (const file of files) {
+    const raw = fs.readFileSync(path.join(modelDir, file), "utf-8");
+    const content = JSON.parse(raw);
+    matchers.push(FaceMatcher.fromJSON(content));
+  }
+
+  rtsp.on("data", async (data: Buffer) => {
+    const img = new Image();
+    img.src = data.toString("base64");
+    const input = await canvas.loadImage(data, "base64");
+    const resultsQuery = await faceapi
+      .detectAllFaces(input, getFaceDetectorOptions(faceDetectionNet))
+      .withFaceLandmarks()
+      .withFaceDescriptors();
+
+    for (const res of resultsQuery) {
+      for (const matcher of matchers) {
+        const bestMatch = matcher.findBestMatch(res.descriptor);
+        console.log(bestMatch.label);
+      }
+    }
+  });
+
+  rtsp.on("error", (err) => {
+    console.log(err);
+  });
+
+  rtsp.start();
+};
+
+main();

scripts/train.ts

@@ -2,9 +2,10 @@ import * as faceapi from "@vladmandic/face-api";
 import canvas from "canvas";
 import fs, { lstatSync } from "fs";
 import * as path from "path";
-import { LabeledFaceDescriptors, TNetInput } from "@vladmandic/face-api";
+import { TNetInput } from "@vladmandic/face-api";
 import * as mime from "mime-types";
 import dotenv from "dotenv-extended";
+import { getFaceDetectorOptions } from "../src/common";
 require("@tensorflow/tfjs-node");
 
 const { Canvas, Image, ImageData } = canvas;
@@ -90,19 +91,4 @@ const main = async () => {
   }
 };
 
-// SsdMobilenetv1Options
-const minConfidence = 0.5;
-
-// TinyFaceDetectorOptions
-const inputSize = 408;
-const scoreThreshold = 0.5;
-
-function getFaceDetectorOptions(net: faceapi.NeuralNetwork<any>) {
-  return net === faceapi.nets.ssdMobilenetv1
-    ? new faceapi.SsdMobilenetv1Options({ minConfidence })
-    : new faceapi.TinyFaceDetectorOptions({ inputSize, scoreThreshold });
-}
-
-const baseDir = path.resolve(__dirname, "../out");
-
 main();

src/common.ts

@@ -0,0 +1,25 @@
+import * as faceapi from "@vladmandic/face-api";
+import * as path from "path";
+import fs from "fs";
+
+// SsdMobilenetv1Options
+export const minConfidence = 0.5;
+
+// TinyFaceDetectorOptions
+export const inputSize = 408;
+export const scoreThreshold = 0.5;
+
+export const getFaceDetectorOptions = (net: faceapi.NeuralNetwork<any>) => {
+  return net === faceapi.nets.ssdMobilenetv1
+    ? new faceapi.SsdMobilenetv1Options({ minConfidence })
+    : new faceapi.TinyFaceDetectorOptions({ inputSize, scoreThreshold });
+};
+
+export function saveFile(fileName: string, buf: Buffer) {
+  const baseDir = process.env.OUT_DIR as string;
+  if (!fs.existsSync(baseDir)) {
+    fs.mkdirSync(baseDir);
+  }
+
+  fs.writeFileSync(path.resolve(baseDir, fileName), buf);
+}

src/index.ts

@@ -1,20 +1 @@
-import { Rtsp } from "rtsp-stream/lib";
+console.log("Hello World");
-
-const main = async () => {
-  const rtsp = new Rtsp("rtsp://brandon:asdf1234@192.168.1.229/live", {
-    rate: 10,
-  });
-
-  rtsp.on("data", async (data: Buffer) => {
-    console.log();
-    process.exit(0);
-  });
-
-  rtsp.on("error", (err) => {
-    console.log(err);
-  });
-
-  rtsp.start();
-};
-
-main();

tsconfig.face-location.json

@@ -59,5 +59,6 @@
     /* Advanced Options */
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
-  }
+  },
+  "include": ["./src"]
 }