Sketch

An image manipulation library for Kotlin.

Sketch doesn't require any external installation like OpenCV or OCR and can be used right away. It's actually a zero-dependency library designed for simplicity that wraps the Java AWT BufferedImage. The library provides an asynchronous interface for all image operations.

Requirements

• Java 8+

Installation

The library is intended to be published to Maven Central.

In the meantime, it can be installed locally:

./gradlew publishToMavenLocal

Add the library as a dependency to your project:

dependencies {
    implementation("io.github.reugn:sketch:0.1.0")
}

Features

Below is a list of the supported transformations/effects with the resulting image.
Click the heading to get the test code that generated the example.

Original Image

Transformations

Rotate	Resize	Crop rectangle	Crop circle

Border radius	Add border	Add border with radius

Inline text	Inline image	Set pixels

Effects

Brightness	Contrast	Opacity

Color Mask	Grayscale	Invert Colors

Blur	Blur partial

Pixelate	Pixelate partial

License

Licensed under the Apache 2.0 License.