November 2018
Intermediate to advanced
492 pages
12h 19m
English
Content preview from Hands-On Image Processing with Python
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Filtering in the frequency domain (HPF, LPF, BPF, and notch filters)
If we remember from the image processing pipeline described in Chapter 1, Getting Started with Image Processing, the immediate next step after image acquisition is image pre-processing. Images are often corrupted by random variations in intensity and illumination or have poor contrast, and therefore can't be used directly and need to be enhanced. This is where the filters are used.
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