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不会用ps处理图像?没关系,我可以用python,一样可以稳稳拿下!

  • 2026-07-02 16:34:29
不会用ps处理图像?没关系,我可以用python,一样可以稳稳拿下!

有好多小伙伴和我说,觉得OpenCV难学、代码看不懂,其实根本是没找对方法!

首先我们要知道OpenCV的核心就是用代码给图片、视频做智能修图与处理是Python视觉入门、兼职实战、项目练手的必备技能。

所以今天我给大家带来最常用、最落地的核心实操案例零基础也能直接复制代码运行 ,快速掌握OpenCV基础用法!

先附上案例,操作过程我放在后面)

实操案例1:读取、展示、保存图片(入门必学)

  • 最基础的核心操作,对应日常打开、预览、另存图片,所有视觉项目的起步代码。

  • 读取电脑本地图片,弹窗预览,按任意键关闭窗口,最后将图片另存为新文件,适配所有基础修图场景。

实操案例2:图片裁剪(精准截取局部画面)

  • 无需复杂工具,通过简单数组切片,实现手机相册同款裁剪功能,可用于截取人脸、车牌、局部景物等。

  • 截取图片中坐标100-400的方形区域,快速提取画面重点,无拉伸、无画质损耗。

实操案例3:图片标注(画框、圈重点、加文字)

  • 实战高频用法,目标检测、作业标注、图片打水印必备,快速标记画面关键信息。

  • 红色矩形框选区域、绿色圆形圈出核心目标、白色文字添加备注,一键完成图片可视化标注。

实操案例4:彩色图转黑白(色彩空间转换)

  • 最简单的滤镜操作,常用于简化画面、降低运算难度,是图像识别预处理常用操作。

  • 去除图片所有色彩,只保留明暗层次,画面更简洁,适合后续图像识别、轮廓检测等操作。

实操案例5:调用摄像头实时取景

  • 进阶基础实操,人脸识别、实时监控的核心前置代码,零基础可直接运行。

  • 调取电脑摄像头,实时捕捉、展示画面,按ESC键即可关闭,可在此基础上叠加标注、识别功能。

OpenCV 基础操作过程

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  139. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/runtime/temp/067d451b9a0c665040f3f1bdd3293d68.php ( 11.98 KB )
  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000476s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000969s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002329s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001453s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000588s ]
  6. SELECT * FROM `set` [ RunTime:0.002087s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000667s ]
  8. SELECT * FROM `article` WHERE `id` = 495346 LIMIT 1 [ RunTime:0.024755s ]
  9. UPDATE `article` SET `lasttime` = 1783062248 WHERE `id` = 495346 [ RunTime:0.008313s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.007940s ]
  11. SELECT * FROM `article` WHERE `id` < 495346 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000665s ]
  12. SELECT * FROM `article` WHERE `id` > 495346 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003769s ]
  13. SELECT * FROM `article` WHERE `id` < 495346 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.059923s ]
  14. SELECT * FROM `article` WHERE `id` < 495346 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.222851s ]
  15. SELECT * FROM `article` WHERE `id` < 495346 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.265292s ]
0.670176s