博客
关于我
kmeans图像分割
阅读量:80 次
发布时间:2019-02-26

本文共 1658 字,大约阅读时间需要 5 分钟。

 

# -*- coding: utf-8 -*-# @Author  : matthew# @Software: PyCharmimport cv2import matplotlib.pyplot as pltimport numpy as npdef seg_kmeans_gray():    img = cv2.imread('000129.jpg', cv2.IMREAD_GRAYSCALE)    # 展平    img_flat = img.reshape((img.shape[0] * img.shape[1], 1))    img_flat = np.float32(img_flat)    # 迭代参数    criteria = (cv2.TERM_CRITERIA_EPS + cv2.TermCriteria_MAX_ITER, 20, 0.5)    flags = cv2.KMEANS_RANDOM_CENTERS    # 聚类    compactness, labels, centers = cv2.kmeans(img_flat, 2, None, criteria, 10, flags)    # 显示结果    img_output = labels.reshape((img.shape[0], img.shape[1]))    plt.subplot(121), plt.imshow(img, 'gray'), plt.title('input')    plt.subplot(122), plt.imshow(img_output, 'gray'), plt.title('kmeans')    plt.show()if __name__ == '__main__':    seg_kmeans_gray()

 

# -*- coding: utf-8 -*-# @Author  : matthew# @Software: PyCharmimport cv2import matplotlib.pyplot as pltimport numpy as npdef seg_kmeans_color():    img = cv2.imread('000129.jpg', cv2.IMREAD_COLOR)    # 变换一下图像通道bgr->rgb,否则很别扭啊    b, g, r = cv2.split(img)    img = cv2.merge([r, g, b])    # 3个通道展平    img_flat = img.reshape((img.shape[0] * img.shape[1], 3))    img_flat = np.float32(img_flat)    # 迭代参数    criteria = (cv2.TERM_CRITERIA_EPS + cv2.TermCriteria_MAX_ITER, 20, 0.5)    flags = cv2.KMEANS_RANDOM_CENTERS    # 聚类    compactness, labels, centers = cv2.kmeans(img_flat, 2, None, criteria, 10, flags)    # 显示结果    img_output = labels.reshape((img.shape[0], img.shape[1]))    plt.subplot(121), plt.imshow(img), plt.title('input')    plt.subplot(122), plt.imshow(img_output, 'gray'), plt.title('kmeans')    plt.show()if __name__ == '__main__':    seg_kmeans_color()

 

转载地址:http://wjzk.baihongyu.com/

你可能感兴趣的文章
MySQL DELETE 表别名问题
查看>>
MySQL Error Handling in Stored Procedures---转载
查看>>
MVC 区域功能
查看>>
MySQL FEDERATED 提示
查看>>
mysql generic安装_MySQL 5.6 Generic Binary安装与配置_MySQL
查看>>
Mysql group by
查看>>
MySQL I 有福啦,窗口函数大大提高了取数的效率!
查看>>
mysql id自动增长 初始值 Mysql重置auto_increment初始值
查看>>
MySQL in 太多过慢的 3 种解决方案
查看>>
MySQL InnoDB 三大文件日志,看完秒懂
查看>>
Mysql InnoDB 数据更新导致锁表
查看>>
Mysql Innodb 锁机制
查看>>
MySQL InnoDB中意向锁的作用及原理探
查看>>
MySQL InnoDB事务隔离级别与锁机制深入解析
查看>>
Mysql InnoDB存储引擎 —— 数据页
查看>>
Mysql InnoDB存储引擎中的checkpoint技术
查看>>
Mysql InnoDB存储引擎中缓冲池Buffer Pool、Redo Log、Bin Log、Undo Log、Channge Buffer
查看>>
MySQL InnoDB引擎的锁机制详解
查看>>
Mysql INNODB引擎行锁的3种算法 Record Lock Next-Key Lock Grap Lock
查看>>
mysql InnoDB数据存储引擎 的B+树索引原理
查看>>