init - 初始化项目

modules/imgcodecs/misc/objc/ios/Mat+Converters.h

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+//
+//  Mat+UIImage.h
+//
+//  Created by Giles Payne on 2020/03/03.
+//
+
+#pragma once
+
+#ifdef __cplusplus
+#import "opencv2/core.hpp"
+#else
+#define CV_EXPORTS
+#endif
+
+#import "Mat.h"
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+CV_EXPORTS @interface Mat (Converters)
+
+-(CGImageRef)toCGImage CF_RETURNS_RETAINED;
+-(instancetype)initWithCGImage:(CGImageRef)image;
+-(instancetype)initWithCGImage:(CGImageRef)image alphaExist:(BOOL)alphaExist;
+-(UIImage*)toUIImage;
+-(instancetype)initWithUIImage:(UIImage*)image;
+-(instancetype)initWithUIImage:(UIImage*)image alphaExist:(BOOL)alphaExist;
+
+@end
+
+NS_ASSUME_NONNULL_END

modules/imgcodecs/misc/objc/ios/Mat+Converters.mm

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+//
+//  Mat+UIImage.mm
+//
+//  Created by Giles Payne on 2020/03/03.
+//
+
+#import "Mat+Converters.h"
+#import <opencv2/imgcodecs/ios.h>
+
+@implementation Mat (Converters)
+
+-(CGImageRef)toCGImage {
+    return MatToCGImage(self.nativeRef);
+}
+
+-(instancetype)initWithCGImage:(CGImageRef)image {
+    return [self initWithCGImage:image alphaExist:NO];
+}
+
+-(instancetype)initWithCGImage:(CGImageRef)image alphaExist:(BOOL)alphaExist {
+    self = [self init];
+    if (self) {
+        CGImageToMat(image, self.nativeRef, (bool)alphaExist);
+    }
+    return self;
+}
+
+-(UIImage*)toUIImage {
+    return MatToUIImage(self.nativeRef);
+}
+
+-(instancetype)initWithUIImage:(UIImage*)image {
+    return [self initWithUIImage:image alphaExist:NO];
+}
+
+-(instancetype)initWithUIImage:(UIImage*)image alphaExist:(BOOL)alphaExist {
+    self = [self init];
+    if (self) {
+        UIImageToMat(image, self.nativeRef, (bool)alphaExist);
+    }
+    return self;
+}
+
+@end