- 在OpenCV官網(wǎng)上下載OpenCV開發(fā)包，OpenCV for iOS
- 創(chuàng)建新項目并在Building phase中添加opencv2.framework
- 將.m文件后綴改為.mm，以支持C++代碼
test：
#import "ViewController.h"
#import <opencv2/opencv.hpp>
#import <opencv2/imgproc/types_c.h>
#import <opencv2/highgui/ios.h>
@interface ViewController ()
{
cv::Mat cvImage;
}
@property (weak, nonatomic) IBOutlet UIImageView *imgView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
CGRect rect = [UIScreen mainScreen].bounds;
self.imgView.frame = rect;
UIImage *image = [UIImage imageNamed:@"test.jpg"];
UIImageToMat(image, cvImage);
if(!cvImage.empty()){
cv::Mat gray;
// 將圖像轉(zhuǎn)換為灰度顯示
cv::cvtColor(cvImage,gray,CV_RGB2GRAY);
// 應用高斯濾波器去除小的邊緣
cv::GaussianBlur(gray, gray, cv::Size(5,5), 1.2,1.2);
// 計算與畫布邊緣
cv::Mat edges;
cv::Canny(gray, edges, 0, 50);
// 使用白色填充
cvImage.setTo(cv::Scalar::all(225));
// 修改邊緣顏色
cvImage.setTo(cv::Scalar(0,128,255,255),edges);
// 將Mat轉(zhuǎn)換為Xcode的UIImageView顯示
self.imgView.image = MatToUIImage(cvImage);
}
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
run:
test.jpg
res_test.png
