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from typing import Dict, NamedTuple, Tuple |
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import numpy as np |
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class Point(NamedTuple): |
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x: int |
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y: int |
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class Landmarks(NamedTuple): |
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eye1: Point |
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eye2: Point |
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nose: Point |
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mouth1: Point |
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mouth2: Point |
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class Rect: |
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def __init__( |
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self, |
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left: int, |
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top: int, |
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right: int, |
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bottom: int, |
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tag: str = "face", |
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landmarks: Landmarks = None, |
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attributes: Dict[str, str] = {}, |
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) -> None: |
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self.tag = tag |
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self.left = left |
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self.top = top |
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self.right = right |
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self.bottom = bottom |
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self.center = int((right + left) / 2) |
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self.middle = int((top + bottom) / 2) |
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self.width = right - left |
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self.height = bottom - top |
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self.size = self.width * self.height |
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self.landmarks = landmarks |
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self.attributes = attributes |
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@classmethod |
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def from_ndarray( |
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cls, |
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face_box: np.ndarray, |
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tag: str = "face", |
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landmarks: Landmarks = None, |
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attributes: Dict[str, str] = {}, |
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) -> "Rect": |
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left, top, right, bottom, *_ = list(map(int, face_box)) |
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return cls(left, top, right, bottom, tag, landmarks, attributes) |
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def to_tuple(self) -> Tuple[int, int, int, int]: |
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return self.left, self.top, self.right, self.bottom |
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def to_square(self): |
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left, top, right, bottom = self.to_tuple() |
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width = right - left |
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height = bottom - top |
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if width % 2 == 1: |
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right = right + 1 |
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width = width + 1 |
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if height % 2 == 1: |
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bottom = bottom + 1 |
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height = height + 1 |
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diff = int(abs(width - height) / 2) |
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if width > height: |
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top = top - diff |
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bottom = bottom + diff |
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else: |
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left = left - diff |
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right = right + diff |
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return left, top, right, bottom |
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