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vue实现肢体识别

2026-01-14 02:10:08VUE

Vue 实现肢体识别的方法

在 Vue 中实现肢体识别通常需要结合第三方库或 API，如 TensorFlow.js、MediaPipe 或 OpenCV.js。以下是几种常见的实现方式：

使用 TensorFlow.js 和 PoseNet

TensorFlow.js 是一个在浏览器中运行机器学习模型的库，PoseNet 是其提供的用于姿态识别的模型。

安装 TensorFlow.js 和 PoseNet：

npm install @tensorflow/tfjs @tensorflow-models/posenet

在 Vue 组件中加载模型并识别姿态：

<template>
  <div>
    <video ref="video" width="600" height="500" autoplay></video>
    <canvas ref="canvas" width="600" height="500"></canvas>
  </div>
</template>

<script>
import * as tf from '@tensorflow/tfjs';
import * as posenet from '@tensorflow-models/posenet';

export default {
  data() {
    return {
      net: null,
    };
  },
  async mounted() {
    await this.loadModel();
    await this.setupCamera();
    this.detectPose();
  },
  methods: {
    async loadModel() {
      this.net = await posenet.load();
    },
    async setupCamera() {
      const video = this.$refs.video;
      const stream = await navigator.mediaDevices.getUserMedia({ video: true });
      video.srcObject = stream;
    },
    async detectPose() {
      const video = this.$refs.video;
      const canvas = this.$refs.canvas;
      const ctx = canvas.getContext('2d');

      const pose = await this.net.estimateSinglePose(video);
      this.drawPose(pose, ctx);
      requestAnimationFrame(this.detectPose);
    },
    drawPose(pose, ctx) {
      ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
      pose.keypoints.forEach(keypoint => {
        if (keypoint.score > 0.5) {
          ctx.beginPath();
          ctx.arc(keypoint.position.x, keypoint.position.y, 5, 0, 2 * Math.PI);
          ctx.fillStyle = 'red';
          ctx.fill();
        }
      });
    },
  },
};
</script>

使用 MediaPipe

MediaPipe 是 Google 提供的跨平台框架，支持肢体识别等功能。

安装 MediaPipe：

npm install @mediapipe/camera_utils @mediapipe/control_utils @mediapipe/drawing_utils @mediapipe/pose

在 Vue 组件中使用 MediaPipe：

<template>
  <div>
    <video ref="video" class="input_video"></video>
    <canvas ref="canvas" class="output_canvas"></canvas>
  </div>
</template>

<script>
import { Pose } from '@mediapipe/pose';
import { Camera } from '@mediapipe/camera_utils';

export default {
  mounted() {
    const pose = new Pose({
      locateFile: (file) => `https://cdn.jsdelivr.net/npm/@mediapipe/pose/${file}`,
    });

    pose.setOptions({
      modelComplexity: 1,
      smoothLandmarks: true,
      enableSegmentation: false,
      smoothSegmentation: true,
      minDetectionConfidence: 0.5,
      minTrackingConfidence: 0.5,
    });

    pose.onResults(this.onResults);

    const camera = new Camera(this.$refs.video, {
      onFrame: async () => {
        await pose.send({ image: this.$refs.video });
      },
      width: 1280,
      height: 720,
    });
    camera.start();
  },
  methods: {
    onResults(results) {
      const canvas = this.$refs.canvas;
      const ctx = canvas.getContext('2d');
      ctx.save();
      ctx.clearRect(0, 0, canvas.width, canvas.height);
      ctx.drawImage(results.image, 0, 0, canvas.width, canvas.height);
      // Draw landmarks or other results here
      ctx.restore();
    },
  },
};
</script>

使用 OpenCV.js

OpenCV.js 是 OpenCV 的 JavaScript 版本，可以用于图像处理和肢体识别。

在 Vue 中加载 OpenCV.js：

<template>
  <div>
    <video ref="video" width="600" height="500" autoplay></video>
    <canvas ref="canvas" width="600" height="500"></canvas>
  </div>
</template>

<script>
export default {
  mounted() {
    this.loadOpenCV();
  },
  methods: {
    loadOpenCV() {
      const script = document.createElement('script');
      script.src = 'https://docs.opencv.org/4.5.5/opencv.js';
      script.onload = this.onOpenCVReady;
      document.body.appendChild(script);
    },
    onOpenCVReady() {
      const video = this.$refs.video;
      const canvas = this.$refs.canvas;
      const ctx = canvas.getContext('2d');

      navigator.mediaDevices.getUserMedia({ video: true }).then((stream) => {
        video.srcObject = stream;
        video.onloadedmetadata = () => {
          this.processVideo();
        };
      });
    },
    processVideo() {
      const video = this.$refs.video;
      const canvas = this.$refs.canvas;
      const ctx = canvas.getContext('2d');

      ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
      // Add OpenCV processing here
      requestAnimationFrame(this.processVideo);
    },
  },
};
</script>