使用 ImageJ 调整和裁剪图像
Resize and crop an image using ImageJ
我正在尝试使用 ImageJ 调整图像大小和裁剪图像。这是代码:
ImagePlus ip1 = IJ.openImage("_Pic.jpg");
ImagePlus ip2 = IJ.openImage("_Pic.jpg");
ImageProcessor imgP1 = ip1.getProcessor();
ImageProcessor imgP2 = ip2.getProcessor();
FileSaver fs1 = new FileSaver(ip1);
FileSaver fs2 = new FileSaver(ip2);
/* Trying to resize */
imgP1.resize(100); // also tried with width and height
fs1.saveAsJpeg("Resized.jpg");
/* Trying to crop */
imgP2.setRoi(100, 100, 200, 200);
imgP2.crop();
fs2.saveAsJpeg("Cropped.jpg");
很遗憾,新创建的文件与原始文件相同。
到目前为止,我已经找到了如何模糊、平滑、反转、平移、旋转......,但这两个让我很难过。有人有想法吗?
圆形裁剪:https://youtu.be/OyiOFh1pD3k
调整大小:https://youtu.be/N_jddMMhzqc
合并两个代码。
Stefan Helfrich 在那里回答了您的 cross-posted question to the ImageJ forum:
If you take a look at the Javadocs for ImageProcessor you'll see that resize()
as well as crop()
return new ImageProcessor
instances and do not operate on this
. That's why you'll have to use the ImagePlus.setProcessor(ImageProcessor)
method to add the returned ImageProcessors to ip1
and ip2
.
像这样交叉发帖时,请始终包含指向其他帖子的链接,这样以后发现此问题的人将有机会关注讨论。
我正在尝试使用 ImageJ 调整图像大小和裁剪图像。这是代码:
ImagePlus ip1 = IJ.openImage("_Pic.jpg");
ImagePlus ip2 = IJ.openImage("_Pic.jpg");
ImageProcessor imgP1 = ip1.getProcessor();
ImageProcessor imgP2 = ip2.getProcessor();
FileSaver fs1 = new FileSaver(ip1);
FileSaver fs2 = new FileSaver(ip2);
/* Trying to resize */
imgP1.resize(100); // also tried with width and height
fs1.saveAsJpeg("Resized.jpg");
/* Trying to crop */
imgP2.setRoi(100, 100, 200, 200);
imgP2.crop();
fs2.saveAsJpeg("Cropped.jpg");
很遗憾,新创建的文件与原始文件相同。
到目前为止,我已经找到了如何模糊、平滑、反转、平移、旋转......,但这两个让我很难过。有人有想法吗?
圆形裁剪:https://youtu.be/OyiOFh1pD3k
调整大小:https://youtu.be/N_jddMMhzqc
合并两个代码。
Stefan Helfrich 在那里回答了您的 cross-posted question to the ImageJ forum:
If you take a look at the Javadocs for ImageProcessor you'll see that
resize()
as well ascrop()
return newImageProcessor
instances and do not operate onthis
. That's why you'll have to use theImagePlus.setProcessor(ImageProcessor)
method to add the returned ImageProcessors toip1
andip2
.
像这样交叉发帖时,请始终包含指向其他帖子的链接,这样以后发现此问题的人将有机会关注讨论。