我在做Android应用程序，它可以使透视变换的图像。 我想要做同样的事情，像下面code。

我试过，但我不能看C $ C $℃。请告诉我！

谢谢

川昭一

样品code（我想要做的）

 的#include＆LT; cv.h＆GT;
＃包括＆LT; highgui.h＆GT;

INT
主（INT ARGC，字符** argv的）
{
  IplImage结构* src_img = 0，* dst_img = 0;
  *与CvMat map_matrix;
  CvPoint2D32f src_pnt [4]，dst_pnt [4];

  如果（的argc＆GT = 2）
    src_img = cvLoadImage（的argv [1]，CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR）;
  如果（src_img == 0）
    返回-1;
  dst_img = cvCloneImage（src_img）;

  src_pnt [0] = cvPoint2D32f（150.0，150.0）;
  src_pnt [1] = cvPoint2D32f（150.0，300.0）;
  src_pnt [2] = cvPoint2D32f（350.0，300.0）;
  src_pnt [3] = cvPoint2D32f（350.0，150.0）;

  dst_pnt [0] = cvPoint2D32f（200.0，200.0）;
  dst_pnt [1] = cvPoint2D32f（150.0，300.0）;
  dst_pnt [2] = cvPoint2D32f（350.0，300.0）;
  dst_pnt [3] = cvPoint2D32f（300.0，200.0）;

  map_matrix = cvCreateMat（3,3，CV_32FC1）;
  cvGetPerspectiveTransform（src_pnt，dst_pnt，map_matrix）;

  cvWarpPerspective（src_img，dst_img，map_matrix，CV_INTER_LINEAR + CV_WARP_FILL_OUTLIERS，cvScalarAll（100））;


  cvNamedWindow（src用户，CV_WINDOW_AUTOSIZE）;
  cvNamedWindow（DST，CV_WINDOW_AUTOSIZE）;
  cvShowImage（src用户，src_img）;
  cvShowImage（DST，dst_img）;
  cvWaitKey（0）;

  cvDestroyWindow（SRC）;
  cvDestroyWindow（DST）;
  cvReleaseImage（安培; src_img）;
  cvReleaseImage（安培; dst_img）;
  cvReleaseMat（安培; map_matrix）;

  返回1;
}
 

我的code

  @覆盖
公共无效的onCreate（包savedInstanceState）{
    Log.i（TAG的onCreate）;
    super.onCreate（savedInstanceState）;
    requestWindowFeature（Window.FEATURE_NO_TITLE）;
    的setContentView（R.layout.main）;
    资源R = getResources（）;
    位图inputBitmap = BitmapFactory.de codeResource（R，R.drawable.icon）;

    垫inputMat = Utils.bitmapToMat（inputBitmap）;
    垫outputMat = inputMat.clone（）;

    名单＆LT;点＆GT; src_pnt =新的ArrayList＆LT;点＆GT;（）;
    点P0 =新的点（75.0，75.0）;
    src_pnt.add（P0）;
    点P1 =新的点（75.0，100.0）;
    src_pnt.add（p1）为;
    点P2 =新的点（100.0，100.0）;
    src_pnt.add（P2）;
    点P3 =新的点（100.0，75.0）;
    src_pnt.add（P3）;
    垫startM = Converters.vector_Point2f_to_Mat（src_pnt）;

    名单＆LT;点＆GT; dst_pnt =新的ArrayList＆LT;点＆GT;（）;
    点P4 =新的点（75.0，75.0）;
    dst_pnt.add（P4）;
    点P5 =新的点（75.0，100.0）;
    dst_pnt.add（P5）;
    点P6 =新的点（100.0，100.0）;
    dst_pnt.add（P6）;
    点P7 =新的点（100.0，75.0）;
    dst_pnt.add（P7）;
    垫ENDM = Converters.vector_Point2f_to_Mat（dst_pnt）;

    板M =新垫（3,3，CvType.CV_32F）;
    Core.perspectiveTransform（startM，ENDM，男）;

    尺寸尺寸=新的尺寸（200.0，200.0）;
    标量标量=新的标量（50.0）;

    Imgproc.warpPerspective（inputMat，outputMat，男，大小，Imgproc.INTER_LINEAR + Imgproc.CV_WARP_FILL_OUTLIERS，Imgproc.BORDER_DEFAULT，标量）;

    位图outputBitmap = inputBitmap;
    Utils.matToBitmap（outputMat，outputBitmap）;
    ImageView的imageView1 =（ImageView的）findViewById（R.id.imageView1）;
    imageView1.setImageBitmap（outputBitmap）;

}
 

解决方案

也有类似的问题，这一点，但找到了解决办法。请参见此处工作的例子。

I am making Android App which can make Perspective Transform Image. I want to do same thing like below code.

I tried but I cant read C code. Please advise me!

Thanks,

Shoichi

Sample Code(I want to do)

#include <cv.h>
#include <highgui.h>

int
main (int argc, char **argv)
{
  IplImage *src_img = 0, *dst_img = 0;
  CvMat *map_matrix;
  CvPoint2D32f src_pnt[4], dst_pnt[4];

  if (argc >= 2)
    src_img = cvLoadImage (argv[1], CV_LOAD_IMAGE_ANYDEPTH | CV_LOAD_IMAGE_ANYCOLOR);
  if (src_img == 0)
    return -1;
  dst_img = cvCloneImage (src_img);

  src_pnt[0] = cvPoint2D32f (150.0, 150.0);
  src_pnt[1] = cvPoint2D32f (150.0, 300.0);
  src_pnt[2] = cvPoint2D32f (350.0, 300.0);
  src_pnt[3] = cvPoint2D32f (350.0, 150.0);

  dst_pnt[0] = cvPoint2D32f (200.0, 200.0);
  dst_pnt[1] = cvPoint2D32f (150.0, 300.0);
  dst_pnt[2] = cvPoint2D32f (350.0, 300.0);
  dst_pnt[3] = cvPoint2D32f (300.0, 200.0);

  map_matrix = cvCreateMat (3, 3, CV_32FC1);
  cvGetPerspectiveTransform (src_pnt, dst_pnt, map_matrix);

  cvWarpPerspective (src_img, dst_img, map_matrix, CV_INTER_LINEAR +     CV_WARP_FILL_OUTLIERS, cvScalarAll (100));


  cvNamedWindow ("src", CV_WINDOW_AUTOSIZE);
  cvNamedWindow ("dst", CV_WINDOW_AUTOSIZE);
  cvShowImage ("src", src_img);
  cvShowImage ("dst", dst_img);
  cvWaitKey (0);

  cvDestroyWindow ("src");
  cvDestroyWindow ("dst");
  cvReleaseImage (&src_img);
  cvReleaseImage (&dst_img);
  cvReleaseMat (&map_matrix);

  return 1;
}

My Code

@Override
public void onCreate(Bundle savedInstanceState) {
    Log.i(TAG, "onCreate");
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.main);
    Resources r = getResources();
    Bitmap inputBitmap = BitmapFactory.decodeResource(r, R.drawable.icon);

    Mat inputMat = Utils.bitmapToMat(inputBitmap);
    Mat outputMat = inputMat.clone();

    List<Point> src_pnt = new ArrayList<Point>();
    Point p0 = new Point(75.0, 75.0);
    src_pnt.add(p0);
    Point p1 = new Point(75.0, 100.0);
    src_pnt.add(p1);
    Point p2 = new Point(100.0, 100.0);
    src_pnt.add(p2);
    Point p3 = new Point(100.0, 75.0);
    src_pnt.add(p3);
    Mat startM = Converters.vector_Point2f_to_Mat(src_pnt);

    List<Point> dst_pnt = new ArrayList<Point>();
    Point p4 = new Point(75.0, 75.0);
    dst_pnt.add(p4);
    Point p5 = new Point(75.0, 100.0);
    dst_pnt.add(p5);
    Point p6 = new Point(100.0, 100.0);
    dst_pnt.add(p6);
    Point p7 = new Point(100.0, 75.0);
    dst_pnt.add(p7);
    Mat endM = Converters.vector_Point2f_to_Mat(dst_pnt);

    Mat M = new Mat(3, 3, CvType.CV_32F);
    Core.perspectiveTransform(startM, endM, M);

    Size size = new Size(200.0, 200.0);
    Scalar scalar = new Scalar(50.0);

    Imgproc.warpPerspective(inputMat, outputMat, M, size, Imgproc.INTER_LINEAR + Imgproc.CV_WARP_FILL_OUTLIERS, Imgproc.BORDER_DEFAULT, scalar);

    Bitmap outputBitmap = inputBitmap;
    Utils.matToBitmap(outputMat, outputBitmap);
    ImageView imageView1 = (ImageView) findViewById(R.id.imageView1);
    imageView1.setImageBitmap(outputBitmap);

}

Had a similar problem with this, but found a solution. See here for a working example.