基于opencv实现对图片明水印、暗水印、信息存储像素、傅里叶转换等源码.zip

# opencvLib ## 包含opencv的静态库 OpenCVLibz.framework是真机release、 OpenCVLibm.framework是模拟器release、 OpenCVLib.framework是合并真机和模拟器release ### 使用opencv实现对图片明水印、暗水印、信息存储像素、傅里叶转换等 ### 不是太懂得可以查看下文章：[OpenCV-图像处理-频域手段添加盲水印](https://www.jianshu.com/p/62e52c4ab5c4) #### 调用方法 ``` //添加使用傅里叶转换添加的标示 - (void)addVisibleMarkText{ // NSString *imagePath = [NSHomeDirectory() stringByAppendingString:saveimageName]; // UIImage *imagetmp = [UIImage imageWithContentsOfFile:imagePath]; cv::Mat orignMat = [[OpenCVUtil share] cvMatFromUIImage:self.getImage? self.getImage :[UIImage imageNamed:imageName]];// cv::Mat getMat = [[OpenCVUtil share] addVisibleMarkText:orignMat blindMarkText:@"XXXX" point:cv::Point(45,45) fontSize:0.8 scalar:CV_RGB(255,255,255)]; UIImage *image = [[OpenCVUtil share] UIImageFromCVMat:getMat]; self.imgView.image = image; } //去掉使用傅里叶转换添加的标示 - (void)removeVisibleMarkText { cv::Mat orignMat = [[OpenCVUtil share] cvMatFromUIImage:self.imgView.image];// cv::Mat getMat = [[OpenCVUtil share] removeVisibleMarkText:orignMat scalar:CV_RGB(255,255,255)]; UIImage *image = [[OpenCVUtil share] UIImageFromCVMat:getMat]; self.imgView.image = image; } // 一些信息添加到矩阵后生成的图 - (void)matrixAdd { //傅里叶打水印 cv::Mat orignMat = [[OpenCVUtil share] cvMatFromUIImage:self.getImage? self.getImage :[UIImage imageNamed:imageName]];// // [[OpenCVUtil share] transformImageWithText:orignMat blindMarkText:@"Test" point:cv::Point(45,45) fontSize:0.8 scalar:CV_RGB(255,255,255)]; // cv::Mat cvMat = [[OpenCVUtil share] antitransformImage]; UIImage *image = [[OpenCVUtil share] UIImageFromCVMat:orignMat]; //把打水印的图片添加信息 cv::Mat matTmp = [[OpenCVUtil share] addMessageMatrixToOriginalMatRow:orignMat messageDic:@{@"imageMD5":[[OpenCVUtil share] getImageMatrixMD5String:orignMat],@"data":@"data"}]; self.imgView.image = [[OpenCVUtil share] UIImageFromCVMat:matTmp]; NSString *imagePath = [NSHomeDirectory() stringByAppendingString:saveimageName]; //把图片直接保存到指定的路径（同时应该把图片的路径imagePath存起来，下次就可以直接用来取） [UIImagePNGRepresentation(self.imgView.image) writeToFile:imagePath atomically:YES]; UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"添加完成" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:nil]; [alertView show]; } //// 从矩阵去掉信息后还原的图 - (void)matrixRemove { //从保存的打水印并添加信息的图片获取信息并对比 NSString *imagePath = [NSHomeDirectory() stringByAppendingString:saveimageName]; UIImage *image = [UIImage imageWithContentsOfFile:imagePath]; // UIImage *image = [UIImage imageNamed:imageName]; cv::Mat orignMat = [[OpenCVUtil share] cvMatFromUIImage:image]; [[OpenCVUtil share] removeMessageMatrixToOriginalMatRow:orignMat getRestoreData:^(NSDictionary *dataDic, cv::Mat restoreMat) { NSLog(@"%@",dataDic); UIImage *image = [[OpenCVUtil share] UIImageFromCVMat:restoreMat]; self.imgView.image = image; if ([dataDic[@"imageMD5"] isEqualToString:[[OpenCVUtil share] getImageMatrixMD5String:restoreMat]]) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"对比success" delegate:nil cancelButtonTitle:@"取消" otherButtonTitles:nil]; [alertView show]; } }]; } ``` #### 核心代码 ``` + (instancetype)share; /** * * MatFromUIImage * * @param image 传入图片 * */ -(cv::Mat)cvMatFromUIImage:(UIImage *)image; /** * * UIImageFromCVMat * * @param cvMat 传入图片Mat * */ -(UIImage *)UIImageFromCVMat:(cv::Mat)cvMat; /** * * 傅里叶dft转换添加水印Text到频域 * * @param image 传入图片Mat * @param blindMarkText 水印文字 * @param point 文字位置 * @param fontSize 文字大小 * @param scalar 颜色 * */ - (void)transformImageWithText:(cv::Mat) image blindMarkText:(NSString *) blindMarkText point:(cv::Point) point fontSize:(double)fontSize scalar:(cv::Scalar) scalar ; /** * * 傅里叶dft转换显示频域 * * @param image 传入图片Mat * */ - (cv::Mat)transformImage:(cv::Mat)image; /** * * 傅里叶idft逆转换显示图片 * */ - (cv::Mat)antitransformImage; /** * 为加快傅里叶变换的速度，对要处理的图片尺寸进行优化 * * @param image * the {@link Mat} to optimize * @return the image whose dimensions have been optimized */ - (cv::Mat)optimizeImageDim:(cv::Mat)image; /** * * 创建优化量级 * * @param complexImage 传入图片Mat * */ - (cv::Mat)createOptimizedMagnitude:(cv::Mat)complexImage; /** * * 转换DFT * * @param image 传入图片Mat * */ - (void)shiftDFT:(cv::Mat)image; - (cv::Mat)extractImage; /** * * 添加明水印 * * @param image 传入图片Mat * @param blindMarkText 水印文字 * @param point 文字位置 * @param fontSize 文字大小 * @param scalar 颜色 * */ - (cv::Mat)addVisibleMarkText:(cv::Mat) image blindMarkText:(NSString *) blindMarkText point:(cv::Point) point fontSize:(double)fontSize scalar:(cv::Scalar) scalar; /** * * 删除明水印 * * @param image 传入图片Mat * @param blindMarkText 水印文字 * @param point 文字位置 * @param fontSize 文字大小 * @param scalar 颜色 * */ - (cv::Mat)removeVisibleMarkText:(cv::Mat) image scalar:(cv::Scalar) scalar ; /** * * 添加Message到图像矩阵 * * @param oriMat 传入图片Mat * @param dataDic 传入的dataDic * */ - (cv::Mat)addMessageMatrixToOriginalMatRow:(cv::Mat) oriMat messageDic:(NSDictionary *)dataDic; /** * * 删除图像中添加的Message矩阵 * * @param oriMat 传入图片Mat * @response dataDic 返回的信息 * @response restoreMat 返回的Mat * */ - (void)removeMessageMatrixToOriginalMatRow:(cv::Mat)oriMat getRestoreData:(void(^)(NSDictionary *dataDic,cv::Mat restoreMat))successBlock ; /** * * 对图片base64+Md5String * * @param img 图片 * */ -(NSString *)base64ToMd5WithImage:(UIImage *)img path:(NSString *)path ; /** * * MD5加密 * * @param mdStr 未加密的String * */ - (NSString *)MD5:(NSString *)mdStr; /** * * dictionary转换成JsonString * * @param infoDict dictionary * */ - (NSString*)convertToJSONData:(id)infoDict; /** * * JsonString转换为dictionary * */ - (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString; - (NSString *)getImageMatrixMD5String:(cv::Mat)mat ; /** * * 原生添加水印文字 * * @param img 图片 * */ - (UIImage *)addimageWithTitle:(NSString *)title fontSize:(CGFloat)fontSize image:(UIImage *)image rectX:(CGFloat )rectX rectY:(CGFloat )rectY; /** * * 宽高比压缩 * * @param img 图片 * */ - (UIImage *)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize; /** * * 全部处理过后的Image * * @param img 图片 * */ - (UIImage *)getProcessedFinalImageWithoriginalImage:(UIImage *)originalImg note:(NSString *)noteStr address:(NSString *)addressStr fillData:(NSDictionary *)messageDic; -(void)savephotoToDocumentFileImage:(UIImage *)image; -(UIImage *)getphotoFromDocumentFile; -(void)deleteDocumentFile; ```