将OpenCV Mat转换为数组(可能是NSArray) [英] Converting OpenCV Mat to array (possibly NSArray)

问题描述

我的C/C ++技能生锈，并且OpenCV的文档非常晦涩.有没有一种方法可以将cv::Mat data属性转换为array/NSArray?

My C/C++ skills are rusty and the documentation for OpenCV is pretty obscure. Is there a way of getting a cv::Mat data attribute converted to array/NSArray?

我想将其序列化为JSON，我知道我可以使用FileStorage实用程序转换为YAML/XML，但这不是我想要的.

I want to serialize it to JSON, I know I can use the FileStorage utility to convert to YAML/XML, but that's not what I want to do.

垫子-> NSArray-> JSON

Mat -> NSArray -> JSON

(我想将相机的固有校准值发送到服务器)

(I want to send intrinsic camera calibration values to the server)

谢谢

推荐答案

您可以使用:

double *d = intrinsics.ptr<double>(0);

这将为您提供9个双打的数组. (这只是强制转换，因此请注意不要让内部函数Mat超出范围.)

this will give you an array of 9 doubles. (it's just a cast, so be careful not to let the intrinsics Mat go out of scope.)

或

double d = intrinsics.at<double>(i,j);

访问单个元素.

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