What does it do?
Sharpen operation can be used to sharpen your image using a 3*3 kernel matrix.
Example in Java to sharpen an image
File input = new File("path\to\file");
File output = new File("path\to\output rotated file");
ImageProcessingOperations operations = new ImageProcessingOperations();
//you can chain other operations here like rotate, scale, etc
Click here for a full list of Image Processing Operations and more general information on Image processing with JDeli.