




'''simple docstring'''







from typing import SupportsIndex

import numpy as np
from scipy.ndimage import convolve






def 						_lowercase						(      lowercase_		,				lowercase_		,				lowercase_    ):



		'''simple docstring'''







		_snake_case      			=			np.stack((horizontal_flow, vertical_flow)		,				2    )

		# Create a grid of all pixel coordinates and subtract the flow to get the
		# target pixels coordinates
		_snake_case      			=			np.stack(
		    np.meshgrid(np.arange(0		,				image.shape[1]    )		,				np.arange(0		,				image.shape[0]    )    )		,				2    )
		_snake_case      			=			np.round(grid - flow    ).astype(np.intaa    )

		# Find the locations outside of the original image
		_snake_case      			=			(grid < 0) | (grid >= np.array([image.shape[1], image.shape[0]]    ))
		_snake_case      			=			0

		_snake_case      			=			image[grid[:, :, 1], grid[:, :, 0]]

		# Set pixels at invalid locations to 0
		_snake_case      			=			0

		return warped






def 						_lowercase						(      lowercase_		,				lowercase_		,				lowercase_		,				lowercase_ = None		,				):



		'''simple docstring'''







		if alpha is None:
				_snake_case      			=			0.1

		# Initialize flow
		_snake_case      			=			np.zeros_like(lowercase_    )
		_snake_case      			=			np.zeros_like(lowercase_    )

		# Prepare kernels for the calculation of the derivatives and the average velocity
		_snake_case      			=			np.array([[-1, 1], [-1, 1]]    ) * 0.25
		_snake_case      			=			np.array([[-1, -1], [1, 1]]    ) * 0.25
		_snake_case      			=			np.array([[1, 1], [1, 1]]    ) * 0.25
		_snake_case      			=			np.array(
		    [[1 / 12, 1 / 6, 1 / 12], [1 / 6, 0, 1 / 6], [1 / 12, 1 / 6, 1 / 12]]    )

		# Iteratively refine the flow
		for _ in range(lowercase_    ):
				_snake_case      			=			warp(lowercase_		,				lowercase_		,				lowercase_    )
				_snake_case      			=			convolve(lowercase_		,				lowercase_    ) + convolve(lowercase_		,				lowercase_    )
				_snake_case      			=			convolve(lowercase_		,				lowercase_    ) + convolve(lowercase_		,				lowercase_    )
				_snake_case      			=			convolve(lowercase_		,				lowercase_    ) + convolve(lowercase_		,				-kernel_t    )

				_snake_case      			=			convolve(lowercase_		,				lowercase_    )
				_snake_case      			=			convolve(lowercase_		,				lowercase_    )

				# This updates the flow as proposed in the paper (Step 12)
				_snake_case      			=			(
				    derivative_x * avg_horizontal_velocity
				    + derivative_y * avg_vertical_velocity
				    + derivative_t
				)
				_snake_case      			=			update / (alpha**2 + derivative_x**2 + derivative_y**2)

				_snake_case      			=			avg_horizontal_velocity - derivative_x * update
				_snake_case      			=			avg_vertical_velocity - derivative_y * update

		return horizontal_flow, vertical_flow


if __name__ == "__main__":
						import doctest

						doctest.testmod()











'''simple docstring'''







import subprocess
from argparse import ArgumentParser
from typing import List, Union

from huggingface_hub.hf_api import HfFolder, create_repo, whoami
from requests.exceptions import HTTPError

from . import BaseTransformersCLICommand





class 	lowerCamelCase_				(			UpperCAmelCase_				):




					'''simple docstring'''






					@staticmethod
					def 							__SCREAMING_SNAKE_CASE      (       __UpperCamelCase					):
							_snake_case      			=			parser.add_parser("login",    help="Log in using the same credentials as on huggingface.co"					)
							login_parser.set_defaults(func=lambda __UpperCamelCase					: LoginCommand(__UpperCamelCase					)					)
							_snake_case      			=			parser.add_parser("whoami",    help="Find out which huggingface.co account you are logged in as."					)
							whoami_parser.set_defaults(func=lambda __UpperCamelCase					: WhoamiCommand(__UpperCamelCase					)					)
							_snake_case      			=			parser.add_parser("logout",    help="Log out"					)
							logout_parser.set_defaults(func=lambda __UpperCamelCase					: LogoutCommand(__UpperCamelCase					)					)

							# new system: git-based repo system
							_snake_case      			=			parser.add_parser(
							    "repo",    help="Deprecated: use `huggingface-cli` instead. Commands to interact with your huggingface.co repos.",    )
							_snake_case      			=			repo_parser.add_subparsers(
							    help="Deprecated: use `huggingface-cli` instead. huggingface.co repos related commands"					)
							_snake_case      			=			repo_subparsers.add_parser(
							    "create",    help="Deprecated: use `huggingface-cli` instead. Create a new repo on huggingface.co"					)
							repo_create_parser.add_argument(
							    "name",    type=__UpperCamelCase,    help="Name for your model's repo. Will be namespaced under your username to build the model id.",    )
							repo_create_parser.add_argument("--organization",    type=__UpperCamelCase,    help="Optional: organization namespace."					)
							repo_create_parser.add_argument("-y",    "--yes",    action="store_true",    help="Optional: answer Yes to the prompt"					)
							repo_create_parser.set_defaults(func=lambda __UpperCamelCase					: RepoCreateCommand(__UpperCamelCase					)					)





class 	lowerCamelCase_				:




					'''simple docstring'''






					lowercase__       =					"""\u001b[1m"""
					lowercase__       =					"""\u001b[31m"""
					lowercase__       =					"""\u001b[90m"""
					lowercase__       =					"""\u001b[0m"""






					@classmethod
					def 							__SCREAMING_SNAKE_CASE      (       cls,    __UpperCamelCase					):
							return f'''{cls._bold}{s}{cls._reset}'''






					@classmethod
					def 							__SCREAMING_SNAKE_CASE      (       cls,    __UpperCamelCase					):
							return f'''{cls._bold}{cls._red}{s}{cls._reset}'''






					@classmethod
					def 							__SCREAMING_SNAKE_CASE      (       cls,    __UpperCamelCase					):
							return f'''{cls._gray}{s}{cls._reset}'''






def 						_lowercase						(      lowercase_		,				lowercase_    ):



		'''simple docstring'''







		_snake_case      			=			[max(len(str(lowercase_    )    ) for x in col    ) for col in zip(*lowercase_		,				lowercase_    )]
		_snake_case      			=			("{{:{}}} " * len(lowercase_    )).format(*lowercase_    )
		_snake_case      			=			[]
		lines.append(row_format.format(*lowercase_    )    )
		lines.append(row_format.format(*["-" * w for w in col_widths]    )    )
		for row in rows:
				lines.append(row_format.format(*lowercase_    )    )
		return "\n".join(lowercase_    )





class 	lowerCamelCase_				:




					'''simple docstring'''






					def __init__(       self,    __UpperCamelCase					):
							_snake_case      			=			args





class 	lowerCamelCase_				(			UpperCAmelCase_				):




					'''simple docstring'''






					def 							__SCREAMING_SNAKE_CASE      (       self					):
							print(
							    ANSI.red(
							        "ERROR! `huggingface-cli login` uses an outdated login mechanism "
							        "that is not compatible with the Hugging Face Hub backend anymore. "
							        "Please use `huggingface-cli login instead."					)					)





class 	lowerCamelCase_				(			UpperCAmelCase_				):




					'''simple docstring'''






					def 							__SCREAMING_SNAKE_CASE      (       self					):
							print(
							    ANSI.red(
							        "WARNING! `transformers-cli whoami` is deprecated and will be removed in v5. Please use "
							        "`huggingface-cli whoami` instead."					)					)
							_snake_case      			=			HfFolder.get_token()
							if token is None:
									print("Not logged in"					)
									exit()
							try:
									_snake_case			,       _snake_case      			=			whoami(__UpperCamelCase					)
									print(__UpperCamelCase					)
									if orgs:
											print(ANSI.bold("orgs: "					),    ",".join(__UpperCamelCase					)					)
							except HTTPError as e:
									print(__UpperCamelCase					)
									print(ANSI.red(e.response.text					)					)
									exit(1					)





class 	lowerCamelCase_				(			UpperCAmelCase_				):




					'''simple docstring'''






					def 							__SCREAMING_SNAKE_CASE      (       self					):
							print(
							    ANSI.red(
							        "ERROR! `transformers-cli logout` uses an outdated logout mechanism "
							        "that is not compatible with the Hugging Face Hub backend anymore. "
							        "Please use `huggingface-cli logout instead."					)					)





class 	lowerCamelCase_				(			UpperCAmelCase_				):




					'''simple docstring'''






					def 							__SCREAMING_SNAKE_CASE      (       self					):
							print(
							    ANSI.red(
							        "WARNING! Managing repositories through transformers-cli is deprecated. "
							        "Please use `huggingface-cli` instead."					)					)
							_snake_case      			=			HfFolder.get_token()
							if token is None:
									print("Not logged in"					)
									exit(1					)
							try:
									_snake_case      			=			subprocess.check_output(["git", "--version"]					).decode("utf-8"					)
									print(ANSI.gray(stdout.strip()					)					)
							except FileNotFoundError:
									print("Looks like you do not have git installed, please install."					)

							try:
									_snake_case      			=			subprocess.check_output(["git-lfs", "--version"]					).decode("utf-8"					)
									print(ANSI.gray(stdout.strip()					)					)
							except FileNotFoundError:
									print(
									    ANSI.red(
									        "Looks like you do not have git-lfs installed, please install."
									        " You can install from https://git-lfs.github.com/."
									        " Then run `git lfs install` (you only have to do this once)."					)					)
							print(""					)

							_snake_case			,       _snake_case      			=			whoami(__UpperCamelCase					)
							_snake_case      			=			self.args.organization if self.args.organization is not None else user
							_snake_case      			=			f'''{namespace}/{self.args.name}'''
							print(f'''You are about to create {ANSI.bold(__UpperCamelCase					)}'''					)

							if not self.args.yes:
									_snake_case      			=			input("Proceed? [Y/n] "					).lower()
									if not (choice == "" or choice == "y" or choice == "yes"):
											print("Abort"					)
											exit()
							try:
									_snake_case      			=			create_repo(__UpperCamelCase,    name=self.args.name,    organization=self.args.organization					)
							except HTTPError as e:
									print(__UpperCamelCase					)
									print(ANSI.red(e.response.text					)					)
									exit(1					)
							print("\nYour repo now lives at:"					)
							print(f'''  {ANSI.bold(__UpperCamelCase					)}'''					)
							print("\nYou can clone it locally with the command below, and commit/push as usual."					)
							print(f'''\n  git clone {url}'''					)
							print(""					)





