为什么垫子类型不同？

Question

我加载了一个大小为160x60的图像到original_pre，下面是代码

original_pre = cvLoadImage(input, 0);
int border = 5;
CvMat* original_mat = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border, CV_8UC3);
original = cvCreateImage(cvSize(original_pre->width-2*border, original_pre->height-2*border), original_pre->depth, original_pre->nChannels);
cvGetSubRect(original_pre, original_mat, cvRect(border,border,original_pre->width-2*border,original_pre->height-2*border));

cvFloodFill(original_mat,cvPoint(0,0),cvScalarAll(0),cvScalarAll(1),cvScalarAll(1));
CvMat* original_open_mat = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border, CV_8UC3);
CvMat* temp = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border, CV_8UC3);
cout<<original_mat->width<<" "<<original_mat->height<<" "<<original_open_mat->width<<" "<<original_open_mat->height<<" "<<CV_MAT_TYPE(original_mat->type)<<" "<<CV_MAT_TYPE(original_open_mat->type)<<" "<<CV_8UC3<<endl;
cvMorphologyEx(original_mat,original_open_mat,temp,NULL,CV_MOP_OPEN);

在填充操作之后，original_mat和original_open_mat的类型是不同的。打印的结果是

150 50 150 50 0 16 16
OpenCV Error: Assertion failed (src.size() == dst.size() && src.type() == dst.type()) in cvMorphologyEx, file /home/ataosky/software/OpenCV-2.4.3/modules/imgproc/src/morph.cpp, line 1353

original_mat的类型是0，而original_open_mat的类型是16。为什么？

Answer 1

我用一个简单的图像运行你的代码，它工作得很好..下面是代码和结果。我假设original_pre和original是IplImage*类型，因为它们没有出现在您的代码块中。

IplImage*   original_pre = cvLoadImage("G:\\test.png");
int border = 5;
    CvMat* original_mat = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border, CV_8UC3);
IplImage* original = cvCreateImage(cvSize(original_pre->width-2*border, original_pre->height-2*border), original_pre->depth, original_pre->nChannels);
cvGetSubRect(original_pre, original_mat, cvRect(border,border,original_pre->width- 2*border,original_pre->height-2*border));

cvFloodFill(original_mat,cvPoint(50,55),cvScalarAll(255),cvScalarAll(0),cvScalarAll(0));
CvMat* original_open_mat = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border, CV_8UC3);
CvMat* temp = cvCreateMat(original_pre->height-2*border, original_pre->width-2*border,  CV_8UC3);
cout<<original_mat->width<<" "<<original_mat->height<<" "<<original_open_mat->width<<" "<<original_open_mat->height<<" "<<CV_MAT_TYPE(original_mat->type)<<" "<<CV_MAT_TYPE(original_open_mat->type)<<" "<<CV_8UC3<<endl;
cvMorphologyEx(original_mat,original_open_mat,temp,NULL,CV_MOP_OPEN);
cvSaveImage("G:\\temp_.jpg",original_open_mat);

原始图像

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结果

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