本文整理了Java中org.opencv.imgproc.Imgproc.Laplacian()方法的一些代码示例，展示了Imgproc.Laplacian()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Imgproc.Laplacian()方法的具体详情如下：
包路径：org.opencv.imgproc.Imgproc
类名称：Imgproc
方法名：Laplacian

Imgproc.Laplacian介绍

[英]Calculates the Laplacian of an image.

The function calculates the Laplacian of the source image by adding up the second x and y derivatives calculated using the Sobel operator:

dst = Delta src = (d^2 src)/(dx^2) + (d^2 src)/(dy^2)

This is done when ksize > 1. When ksize == 1, the Laplacian is computed by filtering the image with the following 3 x 3 aperture:

vecthreethree 0101(-4)1010

Note:

• An example using the Laplace transformation for edge detection can be found at opencv_source_code/samples/cpp/laplace.cpp
  [中]计算图像的拉普拉斯函数。
  该函数通过将使用Sobel运算符计算的第二个x和y导数相加来计算源图像的拉普拉斯函数：
  dst=δsrc=（d^2 src）/（dx^2）+（d^2 src）/（dy^2）
  这是在ksize > 1时完成的。当ksize == 1时，通过使用以下3 x 3孔径过滤图像来计算拉普拉斯算子：
  VECThreethree0101（-4）1010
  注:
  *在opencv_source_code/samples/cpp/Laplace中可以找到使用拉普拉斯变换进行边缘检测的示例。cpp

代码示例

代码示例来源：origin: openpnp/openpnp

@Override
  public Result process(CvPipeline pipeline) throws Exception {
    Mat mat = pipeline.getWorkingImage();
  Imgproc.Laplacian(mat, mat, mat.depth());
    return null;
  }
}

代码示例来源：origin: JavaOpenCVBook/code

protected void processOperation() {

    if(sobelString.equals(operation)){
      Imgproc.Sobel(originalImage, image, -1, xOrder,yOrder,aperture,1.0, 0.0);
//            Core.convertScaleAbs(image, image);
    }
    else if(laplaceString.equals(operation)){
      Imgproc.Laplacian(originalImage, image, -1, aperture, 1.0, 0.0);
//            Core.convertScaleAbs(image, image);
//            Imgproc.threshold(image, image, 1, 255, Imgproc.THRESH_BINARY_INV);
      
    }
    else if(cannyString.equals(operation)){
      Imgproc.Canny(originalImage, image, lowThreshold, highThreshold, aperture, false);
    }
    else if(noneString.equals(operation)){
      image = originalImage.clone();
    }

    updateView(image);
  }