Opencv Java fillConvexPoly 和 approxPolyDP 函数

Question

我的 C++ 代码如下：

// ROI by creating mask for the trapezoid
Mat mask = Mat(frame.rows, frame.cols, CV_8UC1, Scalar(0));

// Create Polygon from vertices
approxPolyDP(pointsForTrapezoid, roiPolygonized, 1.0, true);

// Fill polygon white
fillConvexPoly(mask, &roiPolygonized[0], roiPolygonized.size(), 255, 8, 0);

我想将其转换为 Java，因为从现在开始我将在 Java 中使用 OpenCV。

在 Java 中，我尝试了以下操作：

    // ROI by creating mask for the trapezoid
    Mat mask = new Mat(frame.rows(), frame.cols(), CvType.CV_8UC1, new Scalar(0));

    // Create Polygon from vertices
    MatOfPoint2f tmpTrapeziod = new MatOfPoint2f();
    MatOfPoint2f tmpROI = new MatOfPoint2f();
    tmpTrapeziod.fromList(pointsForTrapezoid);
    tmpROI.fromList(roiPolygonized);
    Imgproc.approxPolyDP(tmpTrapeziod, tmpROI, 1.0, true);

    // Fill polygon white
    Imgproc.fillConvexPoly(mask, tmpROI, new Scalar(255), 8, 0);

但是最后一行给出了错误：

The method fillConvexPoly(Mat, MatOfPoint, Scalar, int, int) in the type Imgproc is not applicable for the arguments (Mat, MatOfPoint2f, Scalar, int, int)

目前我对 MatOfPoint 和 MatOfPoint2f 类型感到很困惑，似乎它不像 C++ 中那么简单。

有人遇到过类似的问题吗？

Answer 1

尝试

Imgproc.fillConvexPoly(mask, new MatOfPoint(tmpROI), new Scalar(255), 8, 0);

Doc - 如此解释以至于我需要强调 Try

Opencv Java fillConvexPoly 和 approxPolyDP 函数

Opencv Java fillConvexPoly and approxPolyDP functions

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java

opencv