{"id":1151407,"date":"2025-01-13T17:13:09","date_gmt":"2025-01-13T09:13:09","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1151407.html"},"modified":"2025-01-13T17:13:11","modified_gmt":"2025-01-13T09:13:11","slug":"python%e5%a6%82%e4%bd%95%e7%a1%ae%e8%ae%a4%e5%83%8f%e7%b4%a0%e5%9d%90%e6%a0%87","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1151407.html","title":{"rendered":"python\u5982\u4f55\u786e\u8ba4\u50cf\u7d20\u5750\u6807"},"content":{"rendered":"

\"python\u5982\u4f55\u786e\u8ba4\u50cf\u7d20\u5750\u6807\"<\/p>\n

\u5728Python\u4e2d\u786e\u8ba4\u50cf\u7d20\u5750\u6807\u7684\u51e0\u79cd\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528Pillow\u5e93\u3001\u4f7f\u7528OpenCV\u5e93\u3001\u901a\u8fc7\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7\u3001\u4f7f\u7528\u56fe\u50cf\u5904\u7406\u5de5\u5177<\/strong>\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\uff0c\u5373\u4f7f\u7528Pillow\u5e93\u3002<\/p>\n<\/p>\n

Pillow\u5e93<\/strong>\u662f\u4e00\u4e2a\u5f3a\u5927\u7684Python\u56fe\u50cf\u5904\u7406\u5e93\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u6253\u5f00\u3001\u64cd\u4f5c\u548c\u4fdd\u5b58\u8bb8\u591a\u4e0d\u540c\u683c\u5f0f\u7684\u56fe\u50cf\u3002\u901a\u8fc7Pillow\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u83b7\u53d6\u6307\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u53ca\u5176\u989c\u8272\u503c\u3002\u4e0b\u9762\u662f\u4f7f\u7528Pillow\u5e93\u7684\u65b9\u6cd5\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n

\u4e00\u3001\u5b89\u88c5Pillow\u5e93<\/h3>\n<\/p>\n

\u9996\u5148\u9700\u8981\u5b89\u88c5Pillow\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<\/p>\n

pip install Pillow<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u8bfb\u53d6\u56fe\u50cf\u5e76\u83b7\u53d6\u50cf\u7d20\u5750\u6807<\/h3>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u53ef\u4ee5\u8bfb\u53d6\u56fe\u50cf\u5e76\u83b7\u53d6\u7279\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u548c\u989c\u8272\u503c\uff1a<\/p>\n<\/p>\n
from PIL import Image<\/p>\n
\u6253\u5f00\u56fe\u50cf\u6587\u4ef6<\/strong><\/h2>\n
image = Image.open('example.jpg')<\/p>\n
\u83b7\u53d6\u56fe\u50cf\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6<\/strong><\/h2>\n
width, height = image.size<\/p>\n
\u83b7\u53d6\u7279\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u53ca\u989c\u8272\u503c<\/strong><\/h2>\n
x, y = 50, 100  # \u66ff\u6362\u4e3a\u4f60\u60f3\u8981\u7684\u5750\u6807<\/p>\n
pixel = image.getpixel((x, y))<\/p>\n
print(f"Pixel at ({x}, {y}) has value: {pixel}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528Image.open<\/code>\u65b9\u6cd5\u6253\u5f00\u56fe\u50cf\u6587\u4ef6\uff0c\u7136\u540e\u4f7f\u7528image.size<\/code>\u83b7\u53d6\u56fe\u50cf\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u3002\u63a5\u7740\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7image.getpixel<\/code>\u65b9\u6cd5\u83b7\u53d6\u6307\u5b9a\u5750\u6807\u7684\u50cf\u7d20\u503c\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528OpenCV\u5e93<\/h3>\n<\/p>\n
OpenCV\u5e93<\/strong>\u662f\u4e00\u4e2a\u5f00\u6e90\u7684\u8ba1\u7b97\u673a\u89c6\u89c9\u548c\u673a\u5668\u5b66\u4e60<\/a>\u8f6f\u4ef6\u5e93\uff0c\u5177\u6709\u5f3a\u5927\u7684\u56fe\u50cf\u5904\u7406\u529f\u80fd\u3002\u901a\u8fc7OpenCV\u5e93\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u83b7\u53d6\u56fe\u50cf\u7684\u50cf\u7d20\u5750\u6807\u53ca\u5176\u989c\u8272\u503c\u3002<\/p>\n<\/p>\n
\u5b89\u88c5OpenCV\u5e93<\/h3>\n<\/p>\n
\u9996\u5148\u9700\u8981\u5b89\u88c5OpenCV\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<\/p>\n
pip install opencv-python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8bfb\u53d6\u56fe\u50cf\u5e76\u83b7\u53d6\u50cf\u7d20\u5750\u6807<\/h3>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u53ef\u4ee5\u8bfb\u53d6\u56fe\u50cf\u5e76\u83b7\u53d6\u7279\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u548c\u989c\u8272\u503c\uff1a<\/p>\n<\/p>\n
import cv2<\/p>\n
\u8bfb\u53d6\u56fe\u50cf\u6587\u4ef6<\/strong><\/h2>\n
image = cv2.imread('example.jpg')<\/p>\n
\u83b7\u53d6\u56fe\u50cf\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6<\/strong><\/h2>\n
height, width, _ = image.shape<\/p>\n
\u83b7\u53d6\u7279\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u53ca\u989c\u8272\u503c<\/strong><\/h2>\n
x, y = 50, 100  # \u66ff\u6362\u4e3a\u4f60\u60f3\u8981\u7684\u5750\u6807<\/p>\n
pixel = image[y, x]<\/p>\n
print(f"Pixel at ({x}, {y}) has value: {pixel}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u4f7f\u7528cv2.imread<\/code>\u65b9\u6cd5\u8bfb\u53d6\u56fe\u50cf\u6587\u4ef6\uff0c\u7136\u540e\u4f7f\u7528image.shape<\/code>\u83b7\u53d6\u56fe\u50cf\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u3002\u63a5\u7740\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7image[y, x]<\/code>\u83b7\u53d6\u6307\u5b9a\u5750\u6807\u7684\u50cf\u7d20\u503c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u901a\u8fc7\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7<\/h3>\n<\/p>\n
\u901a\u8fc7\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7<\/strong>\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5b9e\u65f6\u83b7\u53d6\u56fe\u50cf\u4e2d\u9f20\u6807\u6240\u5728\u4f4d\u7f6e\u7684\u50cf\u7d20\u5750\u6807\u53ca\u5176\u989c\u8272\u503c\u3002OpenCV\u5e93\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7\u529f\u80fd\u3002<\/p>\n<\/p>\n
\u8bfb\u53d6\u56fe\u50cf\u5e76\u83b7\u53d6\u9f20\u6807\u4e8b\u4ef6<\/h3>\n<\/p>\n
\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u53ef\u4ee5\u8bfb\u53d6\u56fe\u50cf\u5e76\u5b9e\u65f6\u83b7\u53d6\u9f20\u6807\u6240\u5728\u4f4d\u7f6e\u7684\u50cf\u7d20\u5750\u6807\u548c\u989c\u8272\u503c\uff1a<\/p>\n<\/p>\n
import cv2<\/p>\n
\u5b9a\u4e49\u9f20\u6807\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570<\/strong><\/h2>\n
def mouse_callback(event, x, y, flags, param):<\/p>\n
    if event == cv2.EVENT_LBUTTONDOWN:<\/p>\n
        pixel = image[y, x]<\/p>\n
        print(f"Pixel at ({x}, {y}) has value: {pixel}")<\/p>\n
\u8bfb\u53d6\u56fe\u50cf\u6587\u4ef6<\/strong><\/h2>\n
image = cv2.imread('example.jpg')<\/p>\n
\u521b\u5efa\u7a97\u53e3\u5e76\u8bbe\u7f6e\u9f20\u6807\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570<\/strong><\/h2>\n
cv2.namedWindow('Image')<\/p>\n
cv2.setMouseCallback('Image', mouse_callback)<\/p>\n
\u663e\u793a\u56fe\u50cf\u5e76\u7b49\u5f85\u7528\u6237\u64cd\u4f5c<\/strong><\/h2>\n
while True:<\/p>\n
    cv2.imshow('Image', image)<\/p>\n
    if cv2.wAI<\/a>tKey(1) & 0xFF == 27:  # \u6309\u4e0b 'Esc' \u952e\u9000\u51fa<\/p>\n
        break<\/p>\n
cv2.destroyAllWindows()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5b9a\u4e49\u4e86\u4e00\u4e2a\u9f20\u6807\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570mouse_callback<\/code>\uff0c\u8be5\u51fd\u6570\u4f1a\u5728\u9f20\u6807\u5de6\u952e\u6309\u4e0b\u65f6\u83b7\u53d6\u6307\u5b9a\u5750\u6807\u7684\u50cf\u7d20\u503c\u3002\u63a5\u7740\uff0c\u6211\u4eec\u4f7f\u7528cv2.imread<\/code>\u8bfb\u53d6\u56fe\u50cf\u6587\u4ef6\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u7a97\u53e3Image<\/code>\uff0c\u901a\u8fc7cv2.setMouseCallback<\/code>\u8bbe\u7f6e\u9f20\u6807\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\u3002\u6700\u540e\uff0c\u6211\u4eec\u901a\u8fc7cv2.imshow<\/code>\u663e\u793a\u56fe\u50cf\uff0c\u5e76\u5728\u5faa\u73af\u4e2d\u7b49\u5f85\u7528\u6237\u64cd\u4f5c\u3002\u5f53\u6309\u4e0b'Esc'\u952e\u65f6\uff0c\u9000\u51fa\u5faa\u73af\u5e76\u5173\u95ed\u7a97\u53e3\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528\u56fe\u50cf\u5904\u7406\u5de5\u5177<\/h3>\n<\/p>\n
\u9664\u4e86\u7f16\u7a0b\u65b9\u6cd5\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u56fe\u50cf\u5904\u7406\u5de5\u5177\u6765\u786e\u8ba4\u50cf\u7d20\u5750\u6807\u53ca\u5176\u989c\u8272\u503c\u3002\u4f8b\u5982\uff0c\u4f7f\u7528Adobe Photoshop\u3001GIMP\u7b49\u5de5\u5177\uff0c\u53ef\u4ee5\u901a\u8fc7\u56fe\u50cf\u7f16\u8f91\u5668\u7684\u53d6\u8272\u5668\u5de5\u5177\u6765\u83b7\u53d6\u6307\u5b9a\u50cf\u7d20\u7684\u5750\u6807\u548c\u989c\u8272\u503c\u3002<\/p>\n<\/p>\n
\u603b\u7ed3\u8d77\u6765\uff0cPython\u4e2d\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u786e\u8ba4\u50cf\u7d20\u5750\u6807\u53ca\u5176\u989c\u8272\u503c\uff0c\u5305\u62ec\u4f7f\u7528Pillow\u5e93\u3001OpenCV\u5e93\u3001\u901a\u8fc7\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7\u4ee5\u53ca\u4f7f\u7528\u56fe\u50cf\u5904\u7406\u5de5\u5177\u3002\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u83b7\u53d6\u56fe\u50cf\u4e2d\u4efb\u610f\u50cf\u7d20\u7684\u5750\u6807\u53ca\u5176\u989c\u8272\u4fe1\u606f\uff0c\u4e3a\u8fdb\u4e00\u6b65\u7684\u56fe\u50cf\u5904\u7406\u548c\u5206\u6790\u63d0\u4f9b\u4e86\u91cd\u8981\u7684\u57fa\u7840\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u56fe\u50cf\u7684\u50cf\u7d20\u5750\u6807\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u56fe\u50cf\u5904\u7406\u5e93\u5982Pillow\u548cOpenCV\u6765\u83b7\u53d6\u56fe\u50cf\u7684\u50cf\u7d20\u5750\u6807\u3002\u901a\u8fc7\u52a0\u8f7d\u56fe\u50cf\u5e76\u4f7f\u7528\u9f20\u6807\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u5b9e\u65f6\u6355\u83b7\u9f20\u6807\u70b9\u51fb\u4f4d\u7f6e\u7684\u50cf\u7d20\u5750\u6807\u3002\u5bf9\u4e8ePillow\uff0c\u53ef\u4ee5\u4f7f\u7528Image.open()<\/code>\u52a0\u8f7d\u56fe\u50cf\uff0c\u5e76\u4f7f\u7528getpixel()<\/code>\u65b9\u6cd5\u83b7\u53d6\u7279\u5b9a\u4f4d\u7f6e\u7684\u50cf\u7d20\u503c\uff1b\u800cOpenCV\u5219\u53ef\u4ee5\u901a\u8fc7cv2.imshow()<\/code>\u548c\u9f20\u6807\u56de\u8c03\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u663e\u793a\u56fe\u50cf\u5e76\u83b7\u53d6\u50cf\u7d20\u5750\u6807\uff1f<\/strong>
\u8981\u663e\u793a\u56fe\u50cf\u5e76\u83b7\u53d6\u50cf\u7d20\u5750\u6807\uff0c\u53ef\u4ee5\u4f7f\u7528OpenCV\u5e93\u3002\u9996\u5148\uff0c\u4f7f\u7528cv2.imread()<\/code>\u52a0\u8f7d\u56fe\u50cf\uff0c\u7136\u540e\u5229\u7528cv2.imshow()<\/code>\u663e\u793a\u56fe\u50cf\u3002\u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u9f20\u6807\u56de\u8c03\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u9f20\u6807\u70b9\u51fb\u65f6\u8bb0\u5f55\u5750\u6807\u3002\u5177\u4f53\u5b9e\u73b0\u53ef\u4ee5\u53c2\u8003\u5982\u4e0b\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
import cv2\n\ndef get_coordinates(event, x, y, flags, param):\n    if event == cv2.EVENT_LBUTTONDOWN:\n        print(f"Clicked coordinates: ({x}, {y})")\n\nimage = cv2.imread('image.jpg')\ncv2.imshow('Image', image)\ncv2.setMouseCallback('Image', get_coordinates)\ncv2.waitKey(0)\ncv2.destroyAllWindows()\n<\/code><\/pre>\n
\u5982\u4f55\u5728\u56fe\u50cf\u4e2d\u6807\u8bb0\u7279\u5b9a\u7684\u50cf\u7d20\u5750\u6807\uff1f<\/strong>
\u8981\u5728\u56fe\u50cf\u4e2d\u6807\u8bb0\u7279\u5b9a\u7684\u50cf\u7d20\u5750\u6807\uff0c\u53ef\u4ee5\u4f7f\u7528OpenCV\u7684\u7ed8\u56fe\u529f\u80fd\u3002\u5728\u83b7\u53d6\u5230\u9f20\u6807\u70b9\u51fb\u7684\u5750\u6807\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528cv2.circle()<\/code>\u51fd\u6570\u5728\u8be5\u5750\u6807\u5904\u7ed8\u5236\u4e00\u4e2a\u5706\u5708\u3002\u6b64\u5916\uff0c\u53ef\u4ee5\u4f7f\u7528cv2.putText()<\/code>\u5728\u56fe\u50cf\u4e0a\u6dfb\u52a0\u5750\u6807\u6587\u672c\uff0c\u786e\u4fdd\u7528\u6237\u80fd\u591f\u6e05\u6670\u5730\u770b\u5230\u6240\u6807\u8bb0\u7684\u4f4d\u7f6e\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
def get_coordinates(event, x, y, flags, param):\n    if event == cv2.EVENT_LBUTTONDOWN:\n        cv2.circle(image, (x, y), 5, (0, 255, 0), -1)\n        cv2.putText(image, f"({x}, {y})", (x+10, y), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 1)\n        cv2.imshow('Image', image)\n\n# \u52a0\u8f7d\u56fe\u50cf\u548c\u8bbe\u7f6e\u56de\u8c03\u51fd\u6570\u7684\u4ee3\u7801\u540c\u4e0a\n<\/code><\/pre>\n
\u901a\u8fc7\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5728Python\u4e2d\u786e\u8ba4\u5e76\u6807\u8bb0\u56fe\u50cf\u7684\u50cf\u7d20\u5750\u6807\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u786e\u8ba4\u50cf\u7d20\u5750\u6807\u7684\u51e0\u79cd\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528Pillow\u5e93\u3001\u4f7f\u7528OpenCV\u5e93\u3001\u901a\u8fc7\u9f20\u6807\u4e8b\u4ef6\u6355\u83b7\u3001\u4f7f\u7528\u56fe\u50cf\u5904 […]","protected":false},"author":3,"featured_media":1151412,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1151407"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1151407"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1151407\/revisions"}],"predecessor-version":[{"id":1151413,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1151407\/revisions\/1151413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1151412"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1151407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1151407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1151407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}