OpenCV StereoSGBM mat输出数组在Xcode中访问不良

Question

尝试在xcode中创建一个视差图，但在运行stereosgbm.compute时一直获得exc不良访问，无法找出原因。该函数的输出数组是一个mat，但我不知道如何初始化它以使其工作。

下面是代码:

#import <Foundation/Foundation.h>
#import "DisparityGenerator.h"
#import "AppDelegate.h"


@implementation DisparityGenerator
AppDelegate *appDelDG;
cv::Mat matImageR;
cv::Mat matImageL;

+ (UIImage*) dispGen:(int)image{
    appDelDG = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    UIImage* result = nil;
    //  convert the photo the camera took to MAT
    if(image == 0){
        UIImage *R = [UIImage imageNamed:@"im6"];
        UIImageToMat(R, matImageR);
        UIImage *L = [UIImage imageNamed:@"im2"];
        UIImageToMat(L, matImageL);
    }else{
        UIImage *R = [UIImage imageNamed:@"im6a"];
        UIImageToMat(R, matImageR);
        UIImage *L = [UIImage imageNamed:@"im2a"];
        UIImageToMat(L, matImageL);
    }
    cv::Mat dispArray;;
//    dispArray.create(<#int _rows#>, <#int _cols#>, int _type)
    cv::cvtColor(matImageL,  matImageL,  cv::COLOR_BGR2GRAY);
    cv::cvtColor(matImageR, matImageR, cv::COLOR_BGR2GRAY);
    cv::StereoSGBM  *imbm = cv::StereoSGBM::create(6, 6, 6);
        //cv::StereoBM::create(16, 2);
    imbm->compute(matImageL,matImageR,dispArray);
    result = MatToUIImage(dispArray);
    return result;

}

@end

Answer 1

明白了!我初始化StereoBM错误。正确的方法是:

    cv::Ptr <cv::StereoBM> imbm = cv::StereoBM::create(0);