在scikit-image中从文件系统加载自定义图像

时间:2016-02-29 10:29:50

标签: python image filesystems threshold scikit-image

我是Python的新手,我正在尝试做官方页面上显示的教程。我的目标是,使用Local Otsu Threshold方法分析我创建的图片。

带有示例图片的代码工作正常,但我想要读取与*.py文件存储在同一目录中的自定义图像。

这是代码:

from skimage import data
from skimage.morphology import disk
from skimage.filters import threshold_otsu, rank
from skimage.util import img_as_ubyte

import matplotlib
import matplotlib.pyplot as plt

matplotlib.rcParams['font.size'] = 9
img = img_as_ubyte(data.page())

radius = 15
selem = disk(radius)

local_otsu = rank.otsu(img, selem)
threshold_global_otsu = threshold_otsu(img)
global_otsu = img >= threshold_global_otsu

fig, ax = plt.subplots(2, 2, figsize=(8, 5), sharex=True, sharey=True,
                       subplot_kw={'adjustable': 'box-forced'})
ax0, ax1, ax2, ax3 = ax.ravel()

fig.colorbar(ax0.imshow(img, cmap=plt.cm.gray),
             ax=ax0, orientation='horizontal')
ax0.set_title('Original')
ax0.axis('off')

fig.colorbar(ax1.imshow(local_otsu, cmap=plt.cm.gray),
             ax=ax1, orientation='horizontal')
ax1.set_title('Local Otsu (radius=%d)' % radius)
ax1.axis('off')

ax2.imshow(img >= local_otsu, cmap=plt.cm.gray)
ax2.set_title('Original >= Local Otsu' % threshold_global_otsu)
ax2.axis('off')

ax3.imshow(global_otsu, cmap=plt.cm.gray)
ax3.set_title('Global Otsu (threshold = %d)' % threshold_global_otsu)
ax3.axis('off')

plt.show()

更具体地说,我想加载我的图片example.jpg而不是

img = img_as_ubyte(data.page())

我该怎么做?

2 个答案:

答案 0 :(得分:4)

使用io.imread功能

img = io.imread('/path/to/example.jpg')

答案 1 :(得分:1)

使用skimage库加载图像。

如果未安装:pip install -U scikit-image

加载图片:

    from skimage import io
    img = io.imread('file_path')