[JAVA] Desktop: OpenCV Denoise

Goal
Test OpenCV denoise.

OpenCV_Denoise.java


import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.photo.Photo;

public class OpenCV_Denoise {

    public static void main(String args[]) {
        System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
        Mat im = Imgcodecs.imread("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\lena.jpg ");
        Mat img = Imgcodecs.imread("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\lena-gray.jpg ", Imgcodecs.CV_LOAD_IMAGE_GRAYSCALE);
        Photo.fastNlMeansDenoising(im, im);
        Imgcodecs.imwrite("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\fastNlMeansDenoising_lena.jpg ", im);
        Imgcodecs.imwrite("D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\fastNlMeansDenoising_lena-gray.jpg ", img);
    }

}
Result
![fastNlMeansDenoising_lena.jpg](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/276243/2df760dc-2417-bbbe-b758-032998299fbc.jpeg) ![fastNlMeansDenoising_lena-gray.jpg](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/276243/ad502b5e-f555-aa0b-c7c3-eebf985eab6a.jpeg)

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