opencv.js 识别图片中的电梯轮廓


要使用OpenCV.js识别图片中的电梯轮廓,可以按照以下步骤进行操作: 1. 导入OpenCV.js库: ```html <script async src="https://docs.opencv.org/master/opencv.js" onload="onOpenCvReady();" type="text/javascript"></script> ``` 2. 创建一个Canvas元素,并为其设置id属性: ```html <canvas id="canvasOutput"></canvas> ``` 3. 在JavaScript中编写代码,加载图像并找到电梯轮廓: ```javascript function onOpenCvReady() { // 加载图像 let src = cv.imread('imagePath'); // 转换为灰度图像 let gray = new cv.Mat(); cv.cvtColor(src, gray, cv.COLOR_RGBA2GRAY); // 进行边缘检测 let edges = new cv.Mat(); cv.Canny(gray, edges, 50, 150); // 找到轮廓 let contours = new cv.MatVector(); let hierarchy = new cv.Mat(); cv.findContours(edges, contours, hierarchy, cv.RETR_EXTERNAL, cv.CHAIN_APPROX_SIMPLE); // 在原始图像上绘制轮廓 let dst = cv.Mat.zeros(src.size(), cv.CV_8UC3); for (let i = 0; i < contours.size(); ++i) { cv.drawContours(dst, contours, i, new cv.Scalar(255, 0, ), 2, cv.LINE_8, hierarchy, 0); } // 在Canvas上显示结果 cv.imshow('canvasOutput', dst); // 释放内存 src.delete(); gray.delete(); edges.delete(); contours.delete(); hierarchy.delete(); dst.delete(); } ``` 请确保将上述代码中的'imagePath'替换为你要识别的图像文件路径。 以上是使用OpenCV.js识别图片中电梯轮廓的基本步骤。你可以根据需要进行进一步的图像处理和分析。 [2024-03-22 16:23:32 | AI写代码神器 | 1193点数解答]
- opencv.js 识别图片(824点数解答 | 2024-03-22 16:22:16)156
- opencv.js 识别图片中的电梯轮廓(1193点数解答 | 2024-03-22 16:23:32)177
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- <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Three.js 示例</title> <style> body { margin: 0; } canvas { display: block; } </style> </head> <body> <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r146/three.min.js"></script> <script> // 你的 Three.js 代码 const scene = new THREE.Scene(); const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000); const renderer = new THREE.WebGLRenderer(); (164点数解答 | 2025-02-27 23:30:20)129
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