import cv2 import numpy as np import matplotlib.pyplot as plt from flask import Flask, request, jsonify app = Flask(name) @app.route('/', methods=['POST']) def predict(): # 读入图片 image = request.files.get('image') img = cv2.imdecode(np.fromstring(image.read(), np.uint8), cv2.IMREAD_COLOR) # 获取图片长宽 height, width = img.shape[:2] # 计算每个圆的半径 width = max(width, height) height = min(width, height) a = int(width / 12) / 2 b = int(height / 8) / 2 c = int(a) d = int(b) r = min(c, d) # 计算圆心坐标 centers = [] for j in range(8): for i in range(12): cx = 2 * r * j + r cy = 2 * r * i + r centers.append((cx, cy)) # 提取灰度值 gray_values = [] for i in range(96): x, y = centers[i][0], centers[i][1] mask = np.zeros_like(img) cv2.circle(mask, (x, y), r, (255, 255, 255), -1) masked_img = cv2.bitwise_and(img, mask) gray_img = cv2.cvtColor(masked_img, cv2.COLOR_RGB2GRAY) gray_value = np.mean(gray_img) gray_values.append(gray_value) # 拟合数据 x_values = gray_values[:16] # 16个用于训练的灰度值 x_prediction_values = gray_values[16:] # 80个用于预测的灰度值 y_values = [0.98, 0.93, 0.86, 0.79, 0.71, 0.64, 0.57, 0.50, 0.43, 0.36, 0.29, 0.21, 0.14, 0.07, 0.05, 0.01] # 16个液体浓度值 # 使用numpy的polyfit函数进行线性拟合 fit = np.polyfit(x_values, y_values, 1) # 使用拟合系数构建线性函数 lin_func = np.poly1d(fit) # 生成新的80个数据的x值 new_x = x_prediction_values # 预测新的80个数据的y值 new_y = lin_func(new_x) # 输出预测结果 result = list(new_y) row3 = result[:8] row4 = result[8:16] row5 = result[16:24] row6 = result[24:32] row7 = result[32:40] row8 = result[40:48] row9 = result[48:56] row10 = result[56:64] row11 = result[64:72] row12 = result[72:80] prediction_result = { "第三列": row3, "第四列": row4, "第五列": row5, "第六列": row6, "第七列": row7, "第八列": row8, "第九列": row9, "第十列": row10, "第十一列": row11, "第十二列": row12 } return jsonify(prediction_result) if name == 'main': app.run(debug=True) 请问上面这段代码如何在本地运行呀？

可以在本地安装Flask和OpenCV等相关库后，将代码保存为一个.py文件。在终端中进入该文件所在目录，运行以下命令即可启动Web应用程序：

export FLASK_APP=your_file_name.py
flask run

其中，`your_file_name.py`是你保存的文件名。在Windows系统中，使用`set`代替`export`。运行成功后，在浏览器中输入`http://localhost:5000/`即可访问该Web应用程序。