Image processing - University of Illinois Chicago
image processing
1 Manipulating Images images are matrices changing color intensities
2 Filtering Images applying convolve of ndimage edge detection with Sobel filters
3 Python Imaging Library (PIL) the fork Pillow
MCS 507 Lecture 27 Mathematical, Statistical and Scientific Software
Jan Verschelde, 14 March 2022
Scientific Software (MCS 507)
image processing
L-27 14 March 2022 1 / 37
image processing
1 Manipulating Images images are matrices changing color intensities
2 Filtering Images applying convolve of ndimage edge detection with Sobel filters
3 Python Imaging Library (PIL) the fork Pillow
Scientific Software (MCS 507)
image processing
L-27 14 March 2022 2 / 37
imageio
The imread in the scipy package is deprecated. Imageio is a Python library that provides an easy interface to read and write a wide range of image data, including animated images, video, volumetric data, and scientific formats. It is cross-platform, runs on Python 2.7 and 3.4+, and is easy to install. Imageio started out as component of the scikit-image project.
web site:
Scientific Software (MCS 507)
image processing
L-27 14 March 2022 3 / 37
a familiar image
Scientific Software (MCS 507)
image processing
L-27 14 March 2022 4 / 37
a first script
We bring an image into a Python session and look at the type, size, and shape:
from imageio import imread from matplotlib import pyplot as plt
seo = imread('buildingseo.jpg') print(type(seo)) print(seo.size) print(seo.shape) plt.imshow(seo) plt.show()
Scientific Software (MCS 507)
image processing
L-27 14 March 2022 5 / 37
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