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