vip-gong

vip-gong / aged-despill

Public

Alpha-Gated Edge Despill

chroma-key computervision cpp despill glsl
59
9
100% credibility
Found Feb 28, 2026 at 46 stars -- GitGems finds repos before they trend. Get early access to the next one.
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AI Analysis
Python
AI Summary

A lightweight tool that automatically removes green or blue spill from the edges of chroma key footage, keeping inner colors intact for seamless compositing.

How It Works

1
🔍 Spot green edges

While editing your green screen video, you notice unwanted green glow around the edges of your subject.

2
🖼️ Discover AGED magic

You find this clever tool that fixes only the edge glow without changing colors inside your subject.

3
📥 Get the tool

Download the tool and add it to your image or video editing setup.

4
🖥️ Load your footage

Open your green screen image or clip with its transparency layer.

5
Pick your screen color
🟢
Green screen

Select green for the common green backdrop setup.

🔵
Blue screen

Choose blue if you filmed against a blue backdrop.

6
✨ Clean the edges

Run the tool and watch it automatically remove the spill just on the boundaries.

7
🛠️ Layer with background

Place your cleaned subject over the new background scene.

🎉 Perfect composite

Enjoy your professional-looking video with crisp, halo-free edges.

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Star Growth

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AI-Generated Review

What is aged-despill?

Aged-despill implements alpha-gated edge despill, a zero-parameter algorithm that removes chroma key spill (like green fringes) only on alpha boundary pixels during compositing. It processes RGBA images in Python, targeting semi-transparent edges (0 < α < 1) to preserve interior colors perfectly, then outputs ready-to-composite footage. Call it via a simple API: despill(RGB array, alpha mask, screen_type='green') for real-time results at 4K60fps.

Why is it gaining traction?

Unlike global despill tools that distort entire images and need tuning, this alpha-gated approach skips opaque pixels, delivering surgical precision without parameters. Developers notice crisp edges free of fringing, plus GLSL shader ports for GPU acceleration. Its O(N) speed and branchless design make it drop-in friendly for pipelines, outperforming memory-hungry alternatives in benchmarks.

Who should use this?

Video effects engineers building Python-based compositing tools, like automated keying in OpenCV workflows. Real-time graphics devs porting to shaders for games or streams handling green/blue screens. Broadcast software maintainers seeking lightweight edge despill without AI overhead.

Verdict

Grab it for niche chroma key edge cases—docs and examples are solid, Python integration is seamless. But with 43 stars and 1.0% credibility score, it's early-stage; test thoroughly before production.

(178 words)

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