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// ==UserScript==
// @name 我的小学数学非常好
// @namespace https://www.fzu.edu.cn/
// @version 0.3
// @description 自动识别fzu教务处的验证码(本地)并填充
// @author 柠檬味氨水, Cai
// @match https://jwcjwxt2.fzu.edu.cn:82/login.htm
// @grant GM_xmlhttpRequest
// @updateURL https://github.com/ACaiCat/mastering-primary-math/raw/refs/heads/main/script.user.js
// @downloadURL https://github.com/ACaiCat/mastering-primary-math/raw/refs/heads/main/script.user.js
// ==/UserScript==
(function () {
'use strict';
// 数字模板（0-8）
const captureTemplate = {
0: [
[255, 0, 0, 0, 0, 255],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 0, 0, 255, 0],
[0, 255, 0, 0, 255, 0],
[0, 255, 0, 0, 255, 0],
[0, 255, 0, 0, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
],
1: [
[255, 255, 0, 255, 255, 255],
[0, 0, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[0, 0, 0, 0, 0, 255],
],
2: [
[255, 0, 0, 0, 0, 255],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 255, 255, 255, 255, 0],
[255, 255, 255, 255, 0, 255],
[255, 255, 255, 0, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 0, 255, 255, 255, 255],
[0, 255, 255, 255, 255, 0],
[0, 0, 0, 0, 0, 0],
],
3: [
[255, 0, 0, 0, 0, 255],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 255, 255, 255, 0, 255],
[255, 255, 0, 0, 255, 255],
[255, 255, 255, 255, 0, 255],
[255, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
],
4: [
[255, 255, 255, 0, 255, 255],
[255, 255, 255, 0, 255, 255],
[255, 255, 0, 0, 255, 255],
[255, 0, 255, 0, 255, 255],
[0, 255, 255, 0, 255, 255],
[0, 255, 255, 0, 255, 255],
[0, 0, 0, 0, 0, 0],
[255, 255, 255, 0, 255, 255],
[255, 255, 255, 0, 255, 255],
[255, 255, 0, 0, 0, 0],
],
5: [
[0, 0, 0, 0, 0, 0],
[0, 255, 255, 255, 255, 255],
[0, 255, 255, 255, 255, 255],
[0, 255, 0, 0, 0, 255],
[0, 0, 255, 255, 255, 0],
[255, 255, 255, 255, 255, 0],
[255, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
],
6: [
[255, 255, 0, 0, 0, 255],
[255, 0, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 255],
[0, 255, 255, 255, 255, 255],
[0, 255, 0, 0, 0, 255],
[0, 0, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
],
7: [
[0, 0, 0, 0, 0, 0],
[0, 255, 255, 255, 0, 255],
[0, 255, 255, 255, 0, 255],
[255, 255, 255, 0, 255, 255],
[255, 255, 255, 0, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
[255, 255, 0, 255, 255, 255],
],
8: [
[255, 0, 0, 0, 0, 255],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
[255, 0, 255, 255, 0, 255],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[0, 255, 255, 255, 255, 0],
[255, 0, 0, 0, 0, 255],
],
};
// 计算灰度,二值化处理图像
function preprocessImage(imageData) {
const data = imageData.data;
const width = imageData.width;
const height = imageData.height;
const binary = [];
for (let y = 0; y < height; y++) {
const row = [];
for (let x = 0; x < width; x++) {
const idx = (y * width + x) * 4;
const r = data[idx];
const g = data[idx + 1];
const b = data[idx + 2];
// 灰度化（转为0-255的灰度值）
const gray = 0.299 * r + 0.587 * g + 0.114 * b;
// 二值化（转为0或1）
// 128是阈值，可以根据实际情况调整
const binaryValue = gray < 128 ? 0 : 1;
row.push(binaryValue);
}
binary.push(row);
}
return binary;
}
// 相似度计算函数
function compare(array1, array2) {
if (!array1 || !array2 || array1.length !== array2.length || array1[0].length !== array2[0].length) {
return 0;
}
const rows = array1.length;
const cols = array1[0].length;
let same = 0;
for (let y = 0; y < rows; y++) {
for (let x = 0; x < cols; x++) {
if (array1[y][x] === array2[y][x]) same++;
}
}
return same / (rows * cols);
}
// 识别单个数字（6x10 图像）
function recognizeSingleDigit(imageData) {
// imageData 是 ImageData 对象（来自 canvas）
const data = imageData.data;
const width = imageData.width; // 应为 6
const height = imageData.height; // 应为 10
// 与模板比对
let bestMatch = 0;
let maxSim = -1;
for (let digit = 0; digit <= 8; digit++) {
const sim = compare( preprocessImage(imageData), captureTemplate[digit]);
if (sim > maxSim) {
maxSim = sim;
bestMatch = digit;
}
}
return bestMatch;
}
// 主识别函数：解析整个验证码图
function recognizeCaptcha(imgElement) {
return new Promise((resolve) => {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
const img = imgElement;
// 验证码图尺寸应为 50x10（根据裁剪坐标推断）
canvas.width = img.width;
canvas.height = img.height;
ctx.drawImage(img, 0, 0);
// 裁剪四个数字区域（x, y, w=6, h=10）
const regions = [
{ x: 2, y: 0 },
{ x: 12, y: 0 },
{ x: 32, y: 0 },
{ x: 42, y: 0 }
];
const digits = regions.map(region => {
const digitCanvas = document.createElement('canvas');
digitCanvas.width = 6;
digitCanvas.height = 10;
const digitCtx = digitCanvas.getContext('2d');
digitCtx.drawImage(canvas, region.x, region.y, 6, 10, 0, 0, 6, 10);
const imageData = digitCtx.getImageData(0, 0, 6, 10);
return recognizeSingleDigit(imageData);
});
console.log('🤔 识别结果:',digits );
const num1 = digits[0] * 10 + digits[1];
const num2 = digits[2] * 10 + digits[3];
resolve(num1 + num2);
});
}
// 主流程
async function processCaptcha() {
try {
const result = await recognizeCaptcha(captchaImage);
captchaInput.value = result.toString();
console.log('✅ 本地识别成功，结果:', result);
} catch (e) {
console.error('❌ 识别失败:', e);
}
}
const captchaImage = document.getElementById('yzm_pic');
const captchaInput = document.getElementById('Verifycode');
if (captchaImage && captchaInput) {
// 等待图片加载完成
if (captchaImage.complete && captchaImage.naturalHeight !== 0) {
processCaptcha();
} else {
captchaImage.onload = processCaptcha;
}
// 监听验证码刷新
const observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.type === 'attributes' && mutation.attributeName === 'src') {
captchaImage.onload = processCaptcha;
}
});
});
observer.observe(captchaImage, {
attributes: true,
attributeFilter: ['src']
});
} else {
console.error('❌ 未找到验证码元素');
}
})();