我提取descriptors,然后将它们保存到文件中,如下所示:

detector->detect(img, imgKpts);
extractor->compute(img, imgKpts, imgMat);
fsKpts << filename << imgMat;

但是当我用read将它们再次像这样返回时:
std::vector<cv::Mat> filesDVec;
cv::Mat temp;
fs[filename] >> temp;
filesDVec.push_back(temp);

并在match中加载图片:
cv::Mat givenIn, givenInMat;
givenIn = cv::imread(dataDirGivenIn, CV_LOAD_IMAGE_GRAYSCALE);
cv::vector<cv::KeyPoint> givenInKpts;
detector->detect(givenIn, givenInKpts);
extractor->compute(givenIn, givenInKpts, givenInMat);
cv::vector<cv::DMatch> matchesVector;

这样使用2 descriptors:
matcher->match(filesDVec[i], givenInMat, matchesVector);

A.K. A cv::Mat输出为:match(Scene, Object, ...)(不是单个匹配项)。

但是与他们这样:
matcher->match(givenInMat, filesDVec[i], matchesVector);

也就是minDist = 100 maxDist = 0抛出此错误:
opencv error:assertion failed (type == src2.type() && src1.cols == src2.cols && (type == CV_32F || type = CV_8U)) in void cv::batchDistance

我想保存每个图像的描述性信息,以便可以将其加载到其中,我在做什么错呢?

编辑

我要补充一点,这不是尝试匹配自身的图像的情况,因为众所周知,如果出于测试目的,对象和源图像相等,则match(Object, Scene, ...)不起作用。

编辑2

文件内容:
Image_0: !!opencv-matrix
   rows: 315
   cols: 32
   dt: u
   data: [ 0, 128, 196, 159, 108, 136, 172, 39, 188, 3, 114, 16, 172,
       234, 0, 66, 74, 43, 46, 128, 64, 172, 67, 239, 4, 54, 218, 8, 84,
       0, 225, 136, 160, 133, 68, 155, 204, 136, 232, 47, 61, 17, 115,
       18, 236, 106, 8, 81, 107, 131, 46, 128, 114, 56, 67, 213, 12, 50,
       218, 64, 21, 8, 209, 136, 180, 69, 70, 142, 28, 130, 238, 96, 141,
       128, 243, 2, 74, 74, 37, 65, 120, 161, 78, 226, 104, 163, 0, 204,
...
etc

读:
std::vector<cv::Mat> filesDVec(imgVec.size());
cv::Mat temp;
cv::FileStorage fs("tileDesc.yml", cv::FileStorage::READ);
for(size_t i = 0; i < (imgVec.size()); i++){
    cv::string iValue = std::to_string(i);
    cv::string filename = "Image_" + iValue;
    fs[filename] >> temp;
    filesDVec.push_back(temp);
}
fs.release();

最佳答案

问题是您使用filesDVec元素分配和构造imgVec.size()(它们是空的cv::Mat)。然后,每个描述符(您在for循环中加载)都将添加到filesDVec vector 的末尾。

结果,您尝试将一些空的cv::MatgivenInMat匹配,并且很可能会导致应用程序崩溃或断言。尝试阅读如下:

std::vector<cv::Mat> filesDVec;
cv::Mat temp;
cv::FileStorage fs("tileDesc.yml", cv::FileStorage::READ);

for(size_t i = 0; i < (imgVec.size()); i++){
    cv::string iValue = std::to_string(i);
    cv::string filename = "Image_" + iValue;
    fs[filename] >> temp;
    filesDVec.push_back(temp);
}

fs.release();

关于c++ - opencv c++匹配文件中的描述符,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/29923485/

10-11 22:30
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