使用opencv实现matlab中的imfill填充孔洞功能
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使用opencv实现matlab中的imfill填充孔洞功能,整体思路如下:
1. 首先给原始图像四周加一圈全0,并保存为另一幅图像
2. 使用floodFill函数给新图像进行填充,种子点设置为Point(0, 0),填充颜色为全白。因为原始图像四周加了一圈0,因此使用floodFill填充之后,整个图像除了原始图像中内部的点是黑色之外其他地方全是白色。
3. 将填充之后的图像颜色反转,再剪裁成原始图像大小。此时这张图像除了内部需要填充的地方是白色之外其他地方都是黑色。
4. 最后将新图像和原始图像取个并集,完成。
代码如下:
/**
\brief 填充二值图像孔洞
\param srcimage [in] 输入具有孔洞的二值图像
\param dstimage [out] 输出填充孔洞的二值图像
\return void
*/
void imfill(Mat srcimage, Mat &dstimage)
{
Size m_Size = srcimage.size();
Mat temimage = Mat::zeros(m_Size.height + 2, m_Size.width + 2, srcimage.type());//延展图像
//imshow("temimage", temimage);
srcimage.copyTo(temimage(Range(1, m_Size.height + 1), Range(1, m_Size.width + 1)));
floodFill(temimage, Point(0,0), Scalar(255));
//imshow("temimage", temimage);
//waitKey(0);
Mat cutImg;//裁剪延展的图像
temimage(Range(1, m_Size.height + 1), Range(1, m_Size.width + 1)).copyTo(cutImg);
dstimage = srcimage | (~cutImg);
}
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### Pull Request Readiness Checklist
See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request
- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
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- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
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