Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.Linguist.model; import java.io.File; import org.opencv.core.Mat; import org.opencv.imgcodecs.Imgcodecs; import org.opencv.imgproc.Imgproc; /** * * @author Bimla Madhavee */ public class sharpeningClass implements Preprocessable { public File imagePreprocessing(String imgeNme, String extnsn) { File sharpen = null; try { // System.loadLibrary(Core.NATIVE_LIBRARY_NAME); Mat source = Imgcodecs.imread( "C:\\Users\\User\\Documents\\GitHub\\Linguist\\web\\uploadedImage\\" + imgeNme, Imgcodecs.CV_LOAD_IMAGE_GRAYSCALE); Mat destination = new Mat(source.rows(), source.cols(), source.type()); Imgproc.equalizeHist(source, destination); Imgcodecs.imwrite("C:\\Users\\User\\Documents\\GitHub\\Linguist\\web\\uploadedImage\\contrast.jpg", destination); sharpen = new File("C:\\Users\\User\\Documents\\GitHub\\Linguist\\web\\uploadedImage\\contrast.jpg"); } catch (Exception e) { System.out.println("error: " + e.getMessage()); } return sharpen; } }