c++ - 在 Xcode 中为 OpenCV 组合两个 c++ 文件(使用未声明的标识符 CVSquares)

Question

我正在尝试合并 OpenCVCircles和 OpenCVSquares对于一个项目。如果我直接从 Xcode 项目文件(独立地)打开它们，它们工作正常，但如果我将 CVSquares.h 和 CVSquares.cpp 文件移动到 OpenCVCircles 项目，它开始提示:“使用未声明的标识符 CVSquares”。这发生在 CVWrapper.mm 中(请参阅末尾有问题的行):

#import "CVWrapper.h"
#import "CVCircles.h"
#import "CVSquares.h"
#import "UIImage+OpenCV.h"

    //remove 'magic numbers' from original C++ source so we can manipulate them from obj-C
#define TOLERANCE 0.3
#define THRESHOLD 50
#define LEVELS 9
#define ACCURACY 0

@implementation CVWrapper

+ (NSMutableArray*) detectedCirclesInImage:(UIImage*) image
{
    double dp = 1;
    double minDist = 10;
    double param1 = 100;
    double param2 = 30;
    int min_radius = 1;
    int max_radius = 30;

    return [[self class] detectedCirclesInImage:image
                                             dp:dp
                                        minDist:minDist
                                         param1:param1
                                         param2:param2
                                     min_radius:min_radius
                                     max_radius:max_radius];
}


+ (NSMutableArray*) detectedCirclesInImage:(UIImage*)image
                                 dp:(CGFloat)dp
                            minDist:(CGFloat)minDist
                             param2:(CGFloat)param2

{
    double param1 = 100;
    int min_radius = 1;
    int max_radius = 30;

    return [[self class] detectedCirclesInImage:image
                                             dp:dp
                                        minDist:minDist
                                         param1:param1
                                         param2:param2
                                     min_radius:min_radius
                                     max_radius:max_radius];
}

+ (NSMutableArray*) detectedCirclesInImage:(UIImage*)image
                                 dp:(CGFloat)dp
                            minDist:(CGFloat)minDist
                             param2:(CGFloat)param2
                         min_radius:(int)min_radius
                         max_radius:(int)max_radius
{
    double param1 = 100;

return [[self class] detectedCirclesInImage:image
                                         dp:dp
                                    minDist:minDist
                                     param1:param1
                                     param2:param2
                                 min_radius:min_radius
                                 max_radius:max_radius];
}



+ (NSMutableArray*) detectedCirclesInImage:(UIImage*)image
                                 dp:(CGFloat)dp
                            minDist:(CGFloat)minDist
                             param1:(CGFloat)param1
                             param2:(CGFloat)param2
                         min_radius:(int)min_radius
                         max_radius:(int)max_radius
{
    NSMutableArray *array = [[NSMutableArray alloc] init];
    UIImage* modifiedImage = nil;
    cv::Mat matImage = [image CVMat];
        int num_circles = 0;
    matImage = CVCircles::detectedCirclesInImage
    (matImage,  dp,  minDist, param1, param2, min_radius, max_radius, &num_circles);
    modifiedImage = [UIImage imageWithCVMat:matImage];
    NSLog(@"n circles: %i",num_circles);
    [array addObject:modifiedImage];
    [array addObject:[NSNumber numberWithInt:num_circles]];
    NSLog(@"array: %@, %@",[array objectAtIndex:0],[array objectAtIndex:1]);
    return array;
}



+ (UIImage*) detectedSquaresInImage:(UIImage*) image
{
    //if we call this method with no parameters,
    //we use the defaults from the original c++ project
    return [[self class] detectedSquaresInImage:image
                                      tolerance:TOLERANCE
                                      threshold:THRESHOLD
                                         levels:LEVELS
                                       accuracy:ACCURACY];

}


+ (UIImage*) detectedSquaresInImage:(UIImage*) image
                          tolerance:(CGFloat)  tolerance
                          threshold:(NSInteger)threshold
                             levels:(NSInteger)levels
                           accuracy:(NSInteger)accuracy

{
    //NSLog (@"detectedSquaresInImage");
    UIImage* result = nil;
    cv::Mat matImage = [image CVMat];

    //ERROR IS ON THIS LINE
    matImage = CVSquares::detectedSquaresInImage (matImage, tolerance, threshold, levels, accuracy);


    result = [UIImage imageWithCVMat:matImage];
    //NSLog (@"detectedSquaresInImage result");

    return result;

}


@end

我的印象是我在重复定义某些东西，在某些文件中缺少 .mm，等等，但我一整天都在为此苦苦挣扎，我无法让它工作(今天是我第一次与 C++)。任何帮助将不胜感激。

PS:感谢 foundry(无论他/她是谁)的 2 个很棒的即插即用项目!

Answer 1

最后将所有 CVSquares.cpp 代码粘贴到 CVCircles.cpp 代码中(以及将 CVSquares.h 粘贴到 CVCircles.h 中)并调用:

matImage = CVCircles::detectedSquaresInImage (matImage, tolerance, threshold, levels, accuracy);

否则无法让它工作。希望对您有所帮助!