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我正在尝试使用 Tesseract Open source code 来查看是否可以在 iPhone 上编译和识别英文字符。我能够这样做。现在我尝试在 tessdata 中包含“ita.traineddata”并进行更改

tess->Init([dataPath cStringUsingEncoding:NSUTF8StringEncoding],    // Path to tessdata-no ending /.
           "eng");                                                  // ISO 639-3 string or NULL.

tess->Init([dataPath cStringUsingEncoding:NSUTF8StringEncoding],    // Path to tessdata-no ending /.
           "ita");                                                  // ISO 639-3 string or NULL.

但我收到此错误: Error openning data file /var/mobile/Applications/A37DB8B7-2272-4F80-9836-0034CEB56CC5/Documents/tessdata/ita.traineddata

我错过了什么,应该如何处理?

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1 回答 1

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首先将 tessdata 添加到您的项目/项目名称文件夹,然后(重要)转到目标/构建阶段/复制捆绑资源并将 tessdata 文件夹添加为参考!

然后像这样初始化tesseract:

// Set up the tessdata path. This is included in the application bundle
// but is copied to the Documents directory on the first run.
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath = ([documentPaths count] > 0) ? [documentPaths objectAtIndex:0] : nil;

NSString *dataPath = [documentPath stringByAppendingPathComponent:@"tessdata"];
NSFileManager *fileManager = [NSFileManager defaultManager];
// If the expected store doesn't exist, copy the default store.
if (![fileManager fileExistsAtPath:dataPath]) {
    // get the path to the app bundle (with the tessdata dir)
    NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
    NSString *tessdataPath = [bundlePath stringByAppendingPathComponent:@"tessdata"];
    if (tessdataPath) {
        [fileManager copyItemAtPath:tessdataPath toPath:dataPath error:NULL];
    }
}    
setenv("TESSDATA_PREFIX", [[documentPath stringByAppendingString:@"/"] UTF8String], 1);
// init the tesseract engine.
tesseract = new tesseract::TessBaseAPI();    
tesseract->Init([dataPath cStringUsingEncoding:NSUTF8StringEncoding], "ita");

注意:Tesseract 默认使用英语初始化,一旦我删除了整个 tessdata 文件夹,它仍然可以在没有 eng.traineddata 文件的情况下工作,这就是为什么它适用于英语但不适用于意大利语的受训数据,你的 tessdata 文件夹没有初始化适当地。

于 2012-11-08T13:25:57.783 回答