Glasses Glare Remover

Why glasses glare wrecks otherwise-good photos

Glasses lenses act like little mirrors. Indoor lighting, window light, or camera flash bouncing off a lens creates a bright opaque patch — usually right over the eye, which is exactly where you don't want it. The eye becomes invisible, the photo reads as "not making eye contact", and the subject looks distant or unfocused. It's the single most common avoidable problem in headshots of glasses-wearers.

Professional photographers prevent it by tilting the lens slightly downward, moving lights off-axis, or using polarising filters. After the fact, the only fix is targeted inpainting. This tool does that automatically.

How the inpaint actually works

The worker pipeline:

1. Face detection. InsightFace returns the bounding box of the largest face plus 5 keypoints (left eye centre, right eye centre, nose, two mouth corners).
2. Lens mask. Around each eye centre, the tool draws an elliptical mask sized roughly the proportions of a typical adult glasses lens (~55% of inter-eye distance horizontally, ~35% vertically).
3. Glare detection. Inside the lens mask, find pixels with brightness above 235/255 (specular highlight threshold). Dilate the result by 3 px so the inpaint edge blends.
4. Inpaint. OpenCV TELEA inpainting fills the glare-flagged pixels by averaging neighbouring non-flagged pixels. The algorithm respects the underlying eye / skin texture so the patch looks natural.

Total time: ~500 ms on our worker. If no bright pixels are found inside the lens area (no glare to fix), the photo is returned unchanged.

When this tool works and when it doesn't

Works on:

• Standard reflection-style glare from windows, lamps, or flashes
• Single bright spot per lens (the most common pattern)
• Tinted lenses where the tint colour is preserved
• Mid-resolution photos (1024×1024 to 4000×4000)

Doesn't work well on:

• Lenses where the glare covers > 40% of the lens area
• Mirrored lenses where the eye behind isn't visible at all
• Photos shot at extreme angles where the lens detection fails
• Tiny thumbnails (< 400 px) — there's not enough resolution for the inpaint to look natural

Related tools

Pair this with the Quality Checker to confirm the overall photo is otherwise usable. If the lighting that caused the glare also caused other problems (shadows, blown highlights), the photo may be beyond a single-pass fix — regenerate via the AI Studio instead.