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fix(tools): lazy-import numpy in green_screen_composite #101

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fix(tools): lazy-import numpy in green_screen_composite #101

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5 changes: 4 additions & 1 deletion tools/video/green_screen_composite.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,6 @@
from pathlib import Path
from typing import Any

import numpy as np
from PIL import Image

from tools.base_tool import (
Expand Down Expand Up @@ -248,6 +247,8 @@ def execute(self, inputs: dict[str, Any]) -> ToolResult:

def _parse_hex_color(self, hex_str: str) -> np.ndarray:
"""Parse a hex color string like '#0E172A' to an RGB numpy array."""
import numpy as np

hex_str = hex_str.lstrip("#")
r = int(hex_str[0:2], 16)
g = int(hex_str[2:4], 16)
Expand Down Expand Up @@ -318,6 +319,8 @@ def _composite_frame(
out_h: int,
) -> Image.Image:
"""Composite a single speaker frame over a background frame using the given layout."""
import numpy as np

# Create alpha mask from speaker frame
speaker_arr = np.array(speaker_img).astype(float)
dist = np.sqrt(np.sum((speaker_arr - bg_color.astype(float)) ** 2, axis=2))
Expand Down