iOS与unity交互、opencv 草稿

好不容易找到了两篇写得特别好的博客：

http://blog.youkuaiyun.com/foreverhyh58/article/details/50353158

http://www.jianshu.com/p/5524d9e9befd

遇到的问题

1，

问题一：enum { NO, GAIN, GAIN_BLOCKS };    Expected identifier

只要把NO修改成 NO_EXPOSURE_COMPENSATOR 或 NO_EXPOSURE_COMPENSATOR = 0

问题二：core.hpp header must be compiled as C++ 或 base.hpp header must be compiled as C++

解决：把调用了 OpenCV文件的.m文件修改为.mm，以及viewController.m修改为viewController.mm

2，报错：找不到 #import <opencv2/highgui/cap_ios.h> 

改为 #import <opencv2/videoio/cap_ios.h>

3，在iphone上运行时报错： 

This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app’s Info.plist must contain an NSCameraUsageDescription key with a string value explaining to the user how the app uses this data. 

在info.plist以源码打开后加入：

    <key>NSCameraUsageDescription</key>

    <string>此 App 需要您的同意才能读取相机</string>

有时候这个文件并不叫这个名，可能是工程名+info.plist,比如OpenCV Tutorial-Info.plist 

总之是有的 

4，编译panorama.framework时报错找不到ovx.hpp，直接注释掉那一行

5，调用opencv人脸识别，提示找不到haarcascade_frontalface_default.xml文件，把这个文件从网上下载下来拖进工程即可

pchFile：

#ifdef __cplusplus

#import

<opencv2/opencv.hpp>

#endif

#import <Availability.h>

#ifndef __IPHONE_5_0

#warning "This project uses features only available in iOS SDK 5.0 and later."

#endif

#ifdef __OBJC__

    #import

<UIKit/UIKit.h>

    #import

<Foundation/Foundation.h>

#endif

// 导入OpenCV核心文件

#import <opencv2/opencv.hpp>

//导入支持iOS平台头文件

#import <opencv2/imgcodecs/ios.h>

// 导入CC++的命名空间

using namespace cv;

/usr/local/include

/usr/local/include/opencv

/usr/local/lib

应用：

kcf目标跟踪