我有一堆从FFMpegGrabber帧，并且想写，看起来像一个方法： private static Mat getAverage(List<Mat> mats) {
if (mats.size() == 0) {
throw new RuntimeException("no mats");
}
Mat first = mats.get(0);
S
我有相同的目标的人谁问in this post I have a JPEG and a Mask. I want to create a PNG with the three JPEG channels and the alpha channel should be the Mask. How can I achieve this with OpenCV? 但我不知道如何转换C++代码到JavaC
像这种垫子： import org.bytedeco.javacpp.opencv_core.Mat
import org.bytedeco.javacpp.{opencv_core, opencv_imgcodecs}
val jpegRawBytes: Array[Byte] = ??? // this is given, not a problem
val matRaw = new