WhiteTeeth

#import <UIKit/UIKit.h>
#import <AVFoundation/AVCaptureSession.h>

@interface AVCamPreviewView : UIView

@property (nonatomic, readonly) AVCaptureVideoPreviewLayer *videoPreviewLayer;

@property (nonatomic) AVCaptureSession *session;

@end

WhiteTeeth

#import <UIKit/UIKit.h>
#import <opencv2/opencv.hpp>

@interface UIImage (Convert)

// CVImageBufferBuf 转为 UIImage
+ (UIImage*)imageWithImageBuffer:(CVImageBufferRef)imageBuffer;

// UIImage 转为 cv::Mat
- (cv::Mat)cvMat;

WhiteTeeth

#import <UIKit/UIKit.h>

@interface UIImage (Orientation)

- (UIImage *)fixOrientation;

@end

WhiteTeeth

#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
#import <Accelerate/Accelerate.h>
#import <opencv2/opencv.hpp>

@interface CVPixelBufferUtils : NSObject

// 将CVPixelBufferRef 转化为cv::Mat，传参的buffer格式为BGRA，不过其他四通道格式应该也适用
+ (cv::Mat)matFromPixelBuffer:(CVPixelBufferRef)buffer;