import org.junit.Test;
import org.opencv.core.Mat;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import static org.opencv.core.Core.merge;
import static org.opencv.core.Core.split;
import static org.opencv.highgui.HighGui.imshow;
import static org.opencv.highgui.HighGui.waitKey;
import static org.opencv.imgcodecs.Imgcodecs.imread;
import static org.opencv.imgproc.Imgproc.equalizeHist;
/**
 * @ClassName OpenCVTest
 * @Description TODO
 * @Author L
 * @Date Create by 2020/1/11
 */
public class OpenCVTest {
 /**
  * 測試OpenCV是否能運行：需要自行修改圖片位置
  * @throws Exception 測試是否成功
  */
 @Test
 public void testOpenCV() throws Exception {
  URL url = ClassLoader.getSystemResource("lib/opencv_java420.dll");
  System.load(url.getPath());
  //填你的圖片地址
  Mat image = imread("E:\\opencv\\src\\main\\resources\\static\\opencv.png", 1);
  if (image.empty()){
   throw new Exception("image is empty!");
  }
  imshow("Original Image", image);
  List<Mat> imageRGB = new ArrayList<>();
  split(image, imageRGB);
  for (int i = 0; i < 3; i++) {
   equalizeHist(imageRGB.get(i), imageRGB.get(i));
  }
  merge(imageRGB, image);
  imshow("Processed Image", image);
  waitKey();
 }
}