A graphical program for basic PGM image processing, written in Java. This program has been written to get a basic understanding of tasks related to the field of computer vision.
- reading P5 images (grayscale, binary content)
- displaying pgm images and histograms
- color inversion
- blurring
- edge detection
- line detection (experimental)
- saving pgm images
The program has been written on Linux and is not tested on other operating systems. You can re-build the project for your OS using maven, however this has not been tested and is not guaranteed to work.
-
go to the
targetfolder and run the executable jar via::java -jar image-processing-0.0.3-SNAPSHOT.jar
-
open any P5 PGM image via the window menu
File-open... -
apply the smooth/blur effect via
Functions-smoothenand select the properties for the convolution kernel in the following dialog that pops up. -
apply color inversion via
functions-invert -
The histogram and preview are updated automatically on each change
-
edge detection can be applied via
functions-edge detection. You may choose between prewitt and Laplace of Gaussian (LoG) as filters, however the LoG filter is only available in the sizes 3x3 and 5x5 pixels. -
line detection can be done via
functions-hough transform. This feature is experimental and does not provide accurate results - see known issues. Accumulator images are automaticaly stored in the programs root folder for debugging.
- The lates version of this software can be obtained from https://github.com/schocco/pgm-processor
- Feel free to report bugs or send feature requests
A runnable jar can be created with maven by running mvn assembly:assembly
in the com.is-gr8.image-processing folder.
Basic functionality is covered with unit tests. After running the unit tests,
modified images are stored in the src/test/resources/processed folder for
manual review.
This folder can be imported as an Eclipse project after running
mvn eclipse:eclipse in the com.is-gr8.image-processing
folder (this will automatically retrieve required dependencies)