[pre-commit.ci] pre-commit autoupdate (#11322)

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- [github.com/pre-commit/mirrors-mypy: v1.8.0 → v1.9.0](https://github.com/pre-commit/mirrors-mypy/compare/v1.8.0...v1.9.0)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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https://en.wikipedia.org/wiki/Image_texture
https://en.wikipedia.org/wiki/Co-occurrence_matrix#Application_to_image_analysis
"""
import imageio.v2 as imageio
import numpy as np

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"""
The Horn-Schunck method estimates the optical flow for every single pixel of
a sequence of images.
It works by assuming brightness constancy between two consecutive frames
and smoothness in the optical flow.
The Horn-Schunck method estimates the optical flow for every single pixel of
a sequence of images.
It works by assuming brightness constancy between two consecutive frames
and smoothness in the optical flow.
Useful resources:
Wikipedia: https://en.wikipedia.org/wiki/Horn%E2%80%93Schunck_method
Paper: http://image.diku.dk/imagecanon/material/HornSchunckOptical_Flow.pdf
Useful resources:
Wikipedia: https://en.wikipedia.org/wiki/Horn%E2%80%93Schunck_method
Paper: http://image.diku.dk/imagecanon/material/HornSchunckOptical_Flow.pdf
"""
from typing import SupportsIndex