index.html

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>选择图片</title>
    <script src="https://docs.opencv.org/4.x/opencv.js" type="text/javascript"></script>
    <script src="./extractstamp.js"></script>
    <style>
        #imageContainer, #originalImageContainer {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 20px;
        }
        #imageContainer img, #originalImageContainer img {
            max-width: 300px;
            max-height: 300px;
            object-fit: contain;
            border: 1px solid #ddd;
            transition: transform 0.3s ease;
        }
        #imageContainer img:hover, #originalImageContainer img:hover {
            transform: scale(1.1);
        }
        #loading {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 20px;
            border-radius: 5px;
            z-index: 1000;
        }
    </style>
</head>
<body>
    <h1>选择图片</h1>
    <input type="file" id="imageInput" accept="image/*" onchange="selectImage()">
    <h2>原图：</h2>
    <div id="originalImageContainer"></div>
    <h2>提取的印章：</h2>
    <div id="imageContainer"></div>
    <div id="loading">处理中，请稍候...</div>
    <script>
        let isReady = false;
        initOpenCV((ready) => {
            isReady = ready;
            console.log('OpenCV.js 已加载', isReady);
        });

        function selectImage() {
            const file = document.getElementById('imageInput').files[0];
            console.log('file', file);
            if (file && isReady) {
                showLoading();
                displayOriginalImage(file);
                extractStampWithFile(file, '#ff0000').then(dstImgList => {
                    console.log('提取红色印章成功', dstImgList);
                    displayImages(dstImgList);
                    hideLoading();
                }).catch(error => {
                    console.error('处理图片时出错:', error);
                    hideLoading();
                });
            } else if (!isReady) {
                console.log('OpenCV.js 尚未加载完成，请稍后再试');
            } else {
                console.log('请先选择一个图片文件');
            }
        }

        function displayOriginalImage(file) {
            const reader = new FileReader();
            reader.onload = function(e) {
                const container = document.getElementById('originalImageContainer');
                container.innerHTML = ''; // 清空之前的内容
                const img = document.createElement('img');
                img.src = e.target.result;
                img.alt = '原图';
                img.style.width = '300px';
                img.style.height = '300px';
                container.appendChild(img);
            }
            reader.readAsDataURL(file);
        }

        function displayImages(imageList) {
            const container = document.getElementById('imageContainer');
            container.innerHTML = ''; // 清空之前的内容
            imageList.forEach((imgSrc, index) => {
                const img = document.createElement('img');
                img.src = imgSrc;
                img.alt = `提取的印章 ${index + 1}`;
                img.style.width = '100px';
                img.style.height = '100px';
                container.appendChild(img);
            });
        }

        function showLoading() {
            document.getElementById('loading').style.display = 'block';
        }

        function hideLoading() {
            document.getElementById('loading').style.display = 'none';
        }
    </script>
</body>
</html>