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perf: Skip no-op image enhancements #742

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perf: Skip no-op image enhancements #742

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23 changes: 11 additions & 12 deletions src/utils/image_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -66,19 +66,18 @@ def apply_image_enhancement(img, image_settings={}):
# ImageEnhance requires RGB mode for operations like blend
if img.mode not in ('RGB', 'L'):
img = img.convert('RGB')


# Apply Brightness
img = ImageEnhance.Brightness(img).enhance(image_settings.get("brightness", 1.0))

# Apply Contrast
img = ImageEnhance.Contrast(img).enhance(image_settings.get("contrast", 1.0))

# Apply Saturation (Color)
img = ImageEnhance.Color(img).enhance(image_settings.get("saturation", 1.0))

# Apply Sharpness
img = ImageEnhance.Sharpness(img).enhance(image_settings.get("sharpness", 1.0))
# Each enhance() call blends over the full image, so skip factors of 1.0
# (the no-op default) to avoid wasted full-frame passes on low-resource devices.
enhancements = [
(ImageEnhance.Brightness, image_settings.get("brightness", 1.0)),
(ImageEnhance.Contrast, image_settings.get("contrast", 1.0)),
(ImageEnhance.Color, image_settings.get("saturation", 1.0)),
(ImageEnhance.Sharpness, image_settings.get("sharpness", 1.0)),
]
for enhancer, factor in enhancements:
if factor != 1.0:
img = enhancer(img).enhance(factor)

return img

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