可以按照倍率缩放，也可以指定分辨率缩放（可能会变形）
原图
0.5倍缩放
private void jBresizeActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
org.opencv.core.Mat imgMat = imread("src\\resource\\" + jTFimgName.getText());//读取图片
float scale = 0.5f;
float width = imgMat.width();
float height = imgMat.height();
org.opencv.core.Mat dst = new Mat();
Imgproc.resize(imgMat, dst, new Size(width * scale, height * scale));
Imgcodecs.imwrite("src\\resource\\0.5.png", dst);
}
1.5倍缩放
private void jBresize1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
org.opencv.core.Mat imgMat = imread("src\\resource\\" + jTFimgName.getText());//读取图片
float scale = 1.5f;
float width = imgMat.width();
float height = imgMat.height();
org.opencv.core.Mat dst = new Mat();
Imgproc.resize(imgMat, dst, new Size(width * scale, height * scale));
Imgcodecs.imwrite("src\\resource\\1.5.png", dst);
}
指定分辨率缩放
private void jBresize2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
org.opencv.core.Mat imgMat = imread("src\\resource\\" + jTFimgName.getText());//读取图片
org.opencv.core.Mat dst = new Mat();
Imgproc.resize(imgMat, dst, new Size(320, 240));
Imgcodecs.imwrite("src\\resource\\320X240.png", dst);
}