[英]Error ROI image in OpenCV
I have a binary image with some noise. 我的二进制图像有些杂音。 I want to reduce the noise by using a rectangle size(10x10) sliding along the image. 我想通过使用沿图像滑动的矩形大小(10x10)来减少噪声。
If the rectangle consists of more than 20 nonZero
pixels, I will copy ROI to the destination image. 如果矩形包含20个以上的nonZero
像素,我将ROI复制到目标图像。
for (int i = 0; i < binary.rows-10; i+=10){
for (int j = 0; j < binary.cols-10; j+=10)
{
cv::Rect Roi(i, j, 10, 10);
cv::Mat countImg = cv::Mat(10, 10, CV_8UC1);
countImg = cv::Mat(binary, Roi);
if (cv::countNonZero(countImg)>20)
{
countImg.copyTo(binary_filter.rowRange(i, i + 10).colRange(j, j + 10));
}
}
}
The program encountered an error at function countImg = cv::Mat(binary, Roi);
程序在函数countImg = cv::Mat(binary, Roi);
处遇到错误countImg = cv::Mat(binary, Roi);
Who can explain? 谁能解释?
The real problem happens here: 真正的问题发生在这里:
cv::Rect Roi(i, j, 10, 10);
cv::Rect
is of format (x, y, width, height)
not cv::Rect
的格式(x, y, width, height)
不是 . 。 (y, x, width_, height)
To make it work, change it to 要使其正常运行,请将其更改为
cv::Rect Roi(j, i, 10, 10);
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