image-filters-4j

Image Processing Filters for Java

I did not see any Mavenized version of Jerry Huxtable’s Java Image Processing Classes.

This repo contains all classes as available via the download at:

http://www.jhlabs.com/ip/filters/download.html

Getting Started

Maven

To use the filters in your Maven project, add the following dependency to your pom.xml:

<dependency>
    <groupId>com.hillert</groupId>
    <artifactId>image-filters-4j</artifactId>
    <version>1.0.0-M1</version>
</dependency>

If you are using Gradle, add the following to your build.gradle:

implementation 'com.hillert:image-filters-4j:1.0.0-M1'

Using Snapshot Versions

Currently, snapshot releases are available via the following Maven repository:

<repository>
  <id>snapshots-repo</id>
  <url>https://central.sonatype.com/repository/maven-snapshots</url>
  <releases>
    <enabled>false</enabled>
  </releases>
  <snapshots>
    <enabled>true</enabled>
  </snapshots>
</repository>

To use snapshot versions, add the following dependency to your pom.xml:

<dependency>
    <groupId>com.hillert</groupId>
    <artifactId>image-filters-4j</artifactId>
    <version>1.0.0-SNAPSHOT</version>
</dependency>

For Gradle, add the following to your build.gradle:

implementation 'com.hillert:image-filters-4j:1.0.0-SNAPSHOT'

Usage

final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
final String imageResourcePath = "images/image-filters-4j.png";
final BufferedImage originalBufferedImage;

try (InputStream inputStream = classLoader.getResourceAsStream(imageResourcePath)) {
    if (inputStream == null) {
        throw new IllegalStateException("Resource not found: " + imageResourcePath);
    }
    originalBufferedImage = ImageIO.read(inputStream);
}
catch (IOException ex) {
    throw new IllegalStateException("Unable to read image at " + imageResourcePath, ex);
}

final BufferedImage grayscaleBufferedImage = new GrayscaleFilter().filter(originalBufferedImage, null);

final Path outputPath = Path.of("target", "image-filters-4j_output.png");

try {
    Files.createDirectories(outputPath.getParent());
    ImageIO.write(grayscaleBufferedImage, "png", outputPath.toFile());
}
catch (IOException ex) {
    throw new IllegalStateException("Unable to write image to " + outputPath, ex);
}

List of Filters

The following filters are included in this library:

Color Adjustment Filters

Filter	New
ChannelMixFilter
ContrastFilter
CurvesFilter
DiffusionFilter
DitherFilter
ExposureFilter
GainFilter
GammaFilter
GrayFilter
GrayscaleFilter
HSBAdjustFilter
InvertAlphaFilter
InvertFilter
LevelsFilter
LookupFilter
MapColorsFilter
MaskFilter
PosterizeFilter
QuantizeFilter
RescaleFilter
RGBAdjustFilter
SepiaFilter	✅
SolarizeFilter
ThresholdFilter
TritoneFilter

Distortion & Warping Filters

Filter	New
BicubicScaleFilter
CircleFilter
CropFilter
DiffuseFilter
DisplaceFilter
DissolveFilter
FieldWarpFilter
FlipFilter
KaleidoscopeFilter
MarbleFilter
MirrorFilter
OffsetFilter
PerspectiveFilter
PinchFilter
PolarFilter
RippleFilter
RotateFilter
ScaleFilter
ShearFilter
SphereFilter
SwimFilter
TileImageFilter
TwirlFilter
WarpFilter
WaterFilter

Effects Filters

Filter	New
BlockFilter
BorderFilter
ChromeFilter
ColorHalftoneFilter
CrystallizeFilter
EmbossFilter
FeedbackFilter
HalftoneFilter
LightFilter
NoiseFilter
PointillizeFilter
ShadowFilter
ShapeFilter
StampFilter
WeaveFilter

Texturing Filters

Filter	New
BrushedMetalFilter
CausticsFilter
CellularFilter
CheckFilter
FBMFilter
FillFilter
FlareFilter
FourColorFilter
GradientFilter
PlasmaFilter
TextureFilter
ScratchFilter
SmearFilter
SparkleFilter
WoodFilter

Blurring & Sharpening Filters

Filter	New
BlurFilter
BoxBlurFilter
BumpFilter
ConvolveFilter
DespeckleFilter
GaussianFilter
GlowFilter
HighPassFilter
LensBlurFilter
MaximumFilter
MedianFilter
MinimumFilter
MotionBlurFilter
OilFilter
RaysFilter
ReduceNoiseFilter
SharpenFilter
SmartBlurFilter
UnsharpFilter
VariableBlurFilter

Edge Detection

Filter	New
DoGFilter
EdgeFilter
LaplaceFilter

Transitions

Filter	New
BlurTransition
GradientWipeFilter

Alpha Channel Filters

Filter	New
OpacityFilter
PremultiplyFilter
UnpremultiplyFilter

Miscellaneous Filters

Filter	New
CompoundFilter
IteratedFilter

License

MIT. See LICENSE.