1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 5 // By downloading, copying, installing or using the software you agree to this license. 6 // If you do not agree to this license, do not download, install, 7 // copy or use the software. 8 // 9 // 10 // License Agreement 11 // For Open Source Computer Vision Library 12 // 13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. 14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved. 15 // Third party copyrights are property of their respective owners. 16 // 17 // Redistribution and use in source and binary forms, with or without modification, 18 // are permitted provided that the following conditions are met: 19 // 20 // * Redistribution's of source code must retain the above copyright notice, 21 // this list of conditions and the following disclaimer. 22 // 23 // * Redistribution's in binary form must reproduce the above copyright notice, 24 // this list of conditions and the following disclaimer in the documentation 25 // and/or other materials provided with the distribution. 26 // 27 // * The name of the copyright holders may not be used to endorse or promote products 28 // derived from this software without specific prior written permission. 29 // 30 // This software is provided by the copyright holders and contributors "as is" and 31 // any express or implied warranties, including, but not limited to, the implied 32 // warranties of merchantability and fitness for a particular purpose are disclaimed. 33 // In no event shall the Intel Corporation or contributors be liable for any direct, 34 // indirect, incidental, special, exemplary, or consequential damages 35 // (including, but not limited to, procurement of substitute goods or services; 36 // loss of use, data, or profits; or business interruption) however caused 37 // and on any theory of liability, whether in contract, strict liability, 38 // or tort (including negligence or otherwise) arising in any way out of 39 // the use of this software, even if advised of the possibility of such damage. 40 // 41 //M*/ 42 43 #import <UIKit/UIKit.h> 44 #import <Accelerate/Accelerate.h> 45 #import <AVFoundation/AVFoundation.h> 46 #import <ImageIO/ImageIO.h> 47 #include "opencv2/core.hpp" 48 #include "precomp.hpp" 49 50 UIImage* MatToUIImage(const cv::Mat& image); 51 void UIImageToMat(const UIImage* image, cv::Mat& m, bool alphaExist); 52 53 UIImage* MatToUIImage(const cv::Mat& image) { 54 55 NSData *data = [NSData dataWithBytes:image.data 56 length:image.elemSize()*image.total()]; 57 58 CGColorSpaceRef colorSpace; 59 60 if (image.elemSize() == 1) { 61 colorSpace = CGColorSpaceCreateDeviceGray(); 62 } else { 63 colorSpace = CGColorSpaceCreateDeviceRGB(); 64 } 65 66 CGDataProviderRef provider = 67 CGDataProviderCreateWithCFData((__bridge CFDataRef)data); 68 69 // Creating CGImage from cv::Mat 70 CGImageRef imageRef = CGImageCreate(image.cols, 71 image.rows, 72 8, 73 8 * image.elemSize(), 74 image.step.p[0], 75 colorSpace, 76 kCGImageAlphaNone| 77 kCGBitmapByteOrderDefault, 78 provider, 79 NULL, 80 false, 81 kCGRenderingIntentDefault 82 ); 83 84 85 // Getting UIImage from CGImage 86 UIImage *finalImage = [UIImage imageWithCGImage:imageRef]; 87 CGImageRelease(imageRef); 88 CGDataProviderRelease(provider); 89 CGColorSpaceRelease(colorSpace); 90 91 return finalImage; 92 } 93 94 void UIImageToMat(const UIImage* image, 95 cv::Mat& m, bool alphaExist) { 96 CGColorSpaceRef colorSpace = CGImageGetColorSpace(image.CGImage); 97 CGFloat cols = image.size.width, rows = image.size.height; 98 CGContextRef contextRef; 99 CGBitmapInfo bitmapInfo = kCGImageAlphaPremultipliedLast; 100 if (CGColorSpaceGetModel(colorSpace) == 0) 101 { 102 m.create(rows, cols, CV_8UC1); // 8 bits per component, 1 channel 103 bitmapInfo = kCGImageAlphaNone; 104 if (!alphaExist) 105 bitmapInfo = kCGImageAlphaNone; 106 contextRef = CGBitmapContextCreate(m.data, m.cols, m.rows, 8, 107 m.step[0], colorSpace, 108 bitmapInfo); 109 } 110 else 111 { 112 m.create(rows, cols, CV_8UC4); // 8 bits per component, 4 channels 113 if (!alphaExist) 114 bitmapInfo = kCGImageAlphaNoneSkipLast | 115 kCGBitmapByteOrderDefault; 116 contextRef = CGBitmapContextCreate(m.data, m.cols, m.rows, 8, 117 m.step[0], colorSpace, 118 bitmapInfo); 119 } 120 CGContextDrawImage(contextRef, CGRectMake(0, 0, cols, rows), 121 image.CGImage); 122 CGContextRelease(contextRef); 123 } 124
