Question

我打算预加载我在应用程序中存储的所有图像。预加载图像涉及：

从捆绑中读取图片。
使用opencv framework中的cvExtractSurf提取对象描述符。
使用相应的对象描述符和关键点存储IPLImage。

我在创建包含CvSeq *键和CvSeq * descs的字典时遇到问题。请建议如何在NSMutableDictionary中存储这些值。

-(void) preloadImages:(NSMutableDictionary *)dictionary{
NSArray *d = [[NSBundle mainBundle] pathsForResourcesOfType:@"png" inDirectory:nil];
CvSURFParams params = cvSURFParams(500, 1);
CvMemStorage* storage = cvCreateMemStorage(0);


for( int i=0;i<[d count];i++){
    NSString *searchForMe = @"myapp.app/1";
    NSString *s = [[NSString alloc] initWithString:[d objectAtIndex:i]];
    NSRange range = [s rangeOfString:searchForMe];
    if( range.location != NSNotFound ){
        NSMutableDictionary *surfDict = [[NSMutableDictionary alloc] init];
        NSString *substring = [s substringFromIndex:range.location];
        substring = [substring stringByReplacingOccurrencesOfString:@"myapp.app/" withString:@""];
        UIImage *testImage = [UIImage imageNamed:substring];
        IplImage *iplTestImage = [OpenCVUtilities CreateGRAYIplImageFromUIImage:testImage];

        CvSeq *keys = 0 ;
        CvSeq *descs = 0;
        cvExtractSURF( iplTestImage, 0, &keys, &descs, storage, params );

        [surfDict setObject:(id)testImage forKey:@"uiImage"];


        NSLog(@"Image name : %@", substring);
        [dictionary setObject:surfDict forKey:[NSString stringWithFormat:@"%d",i]];
        [dictionary setObject:(NSObject *)keys forKey:@"keys"]; // error here
        [dictionary setObject:(NSObject *)descs forKey:@"descs"]; // error here
        [surfDict release];
    }
}

}

Answer 1

创建一个具有cvseq类型的实例变量的类，将cvseq添加到该对象，并将该类添加到字典中。

opencv ios cvseq存储

1 个答案: