问题
I want to use find edges option of the ImageJ, have the edges-found array and save it to another file programatically.
ImagePlus ip1 = IJ.openImage("myimage.jpg");
ImageProcessor ip = new ColorProcessor(ip1.getWidth(), ip1.getHeight());
ip.findEdges();
However, the function findEdges is abstract and I can't have the edge-found image.
EDIT:
I wrote the following lines:
ip.findEdges();
BufferedImage bimg = ip.getBufferedImage();
However, when I try to print out the RGB values of the BufferedImage, it only prints "-16777216" for each pixel RGB.
回答1:
OK, I got the solution, the problem was that I didn't connect the ColorProcessor with the image.
ColorProcessor ip = new ColorProcessor(ImageIO.read(new File("my_image.jpg")));
ip.findEdges();
BufferedImage bimg = ip.getBufferedImage();
回答2:
ImageProcessor is an abstract class, that lets the derived classes provide the appropriate implementation. You need to declare ip
as type ColorProcessor
:
ColorProcessor ip = new ColorProcessor(ip1.getWidth(), ip1.getHeight());
ip.findEdges();
来源:https://stackoverflow.com/questions/10652578/find-edges-with-imagej-programmatically