https://github.com/urraka/alpha-bleeding

Small tool to bleed the border colors of an image with transparency through the pixels that are fully transparent.
https://github.com/urraka/alpha-bleeding

Last synced: about 1 month ago
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Small tool to bleed the border colors of an image with transparency through the pixels that are fully transparent.

• Host: GitHub
• URL: https://github.com/urraka/alpha-bleeding
• Owner: urraka
• License: mit
• Created: 2014-03-07T14:25:56.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2017-11-28T19:25:24.000Z (about 7 years ago)
• Last Synced: 2023-03-31T16:34:30.961Z (almost 2 years ago)
• Language: C++
• Size: 1.01 MB
• Stars: 39
• Watchers: 3
• Forks: 8
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
This is a small tool to bleed the border colors of an image with transparency through the pixels that

are fully transparent. It's intended to avoid filtering issues in OpenGL applications.

**Usage:**

`alpha-bleeding  `

Both `` and `` should be PNG image files.

**Building:**

Just type `make` on the root directory. `libpng` and `libz` are the only required dependencies.

**Example:**

It's hard to see the effect of this tool, given that it only modifies the transparent pixels, so I

added another tool which just changes the alpha channel of every pixel to fully opaque. It can be

used the same way:

`alpha-remove  `

Using that helper tool you can clearly see the effect of the alpha bleeding:

Original image:

![original](media/original.png)

Image after `alpha-bleeding` (not much to see):

![alpha-bleeding](media/alpha-bleeding.png)

Original image after `alpha-remove`:

![original-opaque](media/original-opaque.png)

Image after `alpha-bleeding` and `alpha-remove`:

![alpha-bleeding-opaque](media/alpha-bleeding-opaque.png)