使用简单斑点检测器时，命名空间'cv::detail‘中没有名为'Blender’的成员出现stitching.hpp错误

Question

我正在尝试使用Swift的简单博客检测器和OpenCV Objective C++包装器以及iOS的OpenCV 3.1.0。然而，我得到了几个错误。我不理解他们，因为他们暗示我在使用stitching.hpp，但我没有。有什么建议吗？我不明白为什么它会调用stitching.hpp搅拌器和曝光补偿。

错误是:在命名空间'cv::detail‘stitching.hpp中没有名为'ExposureCompensator’的成员，在命名空间'cv::detail‘stitching.hpp中没有名为'Blender’的成员

头被添加到开头，因为我最初从宏中的预期标识符‘NO’中得到解析问题。通过添加这些头文件，我删除了源文件中建议的解析问题，但如上所述，这会导致新的错误。

#ifndef OPENCV_STITCHING_BLENDERS_HPP
#define OPENCV_STITCHING_BLENDERS_HPP

#if defined(NO)
#warning Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.
#endif

#ifndef OPENCV_STITCHING_EXPOSURE_COMPENSATE_HPP
#define OPENCV_STITCHING_EXPOSURE_COMPENSATE_HPP

#if defined(NO)
#warning Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.
#endif

#import "OpenWrapper.h"
#import <opencv2/opencv.hpp>
#import <opencv2/core/core.hpp>
#import <opencv2/imgcodecs/ios.h>
#import <opencv2/imgproc.hpp>

using namespace std;
using namespace cv;

@implementation OpenWrapper

+(UIImage *) makeGrayscale:(UIImage *)myImage{

//  Convert UIImage to Mat
Mat imageMat;
UIImageToMat(myImage, imageMat);

//  Convert from color to grayscale image
Mat graymat;
cvtColor(imageMat, graymat, CV_BGR2GRAY);

//  Set up Simple Blob Parameters
SimpleBlobDetector::Params params;

params.minThreshold = 10;
params.maxThreshold = 200;
params.filterByArea = true;
params.minArea = 1500;
params.filterByCircularity = true;
params.minConvexity = 0.87;
params.filterByInertia = true;
params.minInertiaRatio = 0.01;


//  Creat dectector with keypoints
vector<KeyPoint> keypoints;
Ptr<SimpleBlobDetector> detector = SimpleBlobDetector::create(params);

detector->detect(graymat, keypoints);

//  Mat im_with_keypoints;
Mat im_with_keypoints;
drawKeypoints(graymat, keypoints, im_with_keypoints, Scalar(0,0,255), DrawMatchesFlags::DRAW_RICH_KEYPOINTS);

//  Show blobs
imshow("keypoints", im_with_keypoints );
waitKey(0);

//  Output results as UIIMage
return MatToUIImage(graymat);

}

#endif
#endif

@end

Answer 1

简单的初学者错误。OpenCV文档清楚地声明将所有OpenCV语句放在任何苹果代码之前，以防止枚举错误。这意味着要确保将opencv import语句放在Obj C++导入标题语句之前。