https://github.com/jensostertag/grayscalestretch
Java application that scales the contrast of grayscaled images
https://github.com/jensostertag/grayscalestretch
Last synced: about 2 months ago
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Java application that scales the contrast of grayscaled images
- Host: GitHub
- URL: https://github.com/jensostertag/grayscalestretch
- Owner: JensOstertag
- License: mit
- Created: 2024-06-08T09:21:56.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-06-08T10:06:21.000Z (11 months ago)
- Last Synced: 2025-01-16T04:10:49.363Z (3 months ago)
- Language: Java
- Homepage:
- Size: 337 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# GrayscaleStretch
### Scaling the contrast of grayscaled images
[Introduction](#introduction) • [License](#license)
## Introduction
This project is a simple Java application that scales the contrast of grayscaled images.
It calculates a percentile of the gray values in the image and then scales them to the full range of 0 to 255.
The percentile can be adjusted by the user.
## Example
| Original | Output |
|----------------------------|---------------------------|
|  |  |
The images above show a top view of the Jezero crater on Mars, taken from the [interactive map](https://murray-lab.caltech.edu/CTX/V01/SceneView/MurrayLabCTXmosaic.html) of the [Global CTX Mosaic of Mars](https://murray-lab.caltech.edu/CTX/). Special thanks to the scientists and engineers at [Malin Space Science Systems](http://www.msss.com/) and the [Jet Propulsion Laboratory](https://www.jpl.nasa.gov/), who have built and operated CTX.
### Usage
The application can be run from the command line with the following command:
```sh
java -jar GrayscaleSwitch.jar input.png output.png
```
or with adjusted values for the percentiles:
```sh
java -jar GrayscaleSwitch.jar input.png output.png 0.25 0.9
```
## License
This project is licensed under the terms of the MIT license. For more information, see the [LICENSE](LICENSE) file.