使用Tesseract的iOS

Question

即时通讯使用tesseract OCR，它只能读取300 dpi的图像，当我使用UIImage选取器控制器相机拍摄的照片72 dpi的图像我怎样才能以300 dpi像iOS应用程序股票应用程序中的图像？

Answer 1

我在iPad与iOS7采用正方体和下面的代码成功地呈现出的UIImagePickerController，我得到的图像回来，我可以很容易地OCR通过​​正方体：

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { 
    iosPicker = [[UIImagePickerController alloc] init]; 
    iosPicker.sourceType = UIImagePickerControllerSourceTypeCamera; 
    iosPicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeImage, nil]; 
    iosPicker.allowsEditing = NO; 
    iosPicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto; 
    iosPicker.cameraDevice = UIImagePickerControllerCameraDeviceRear; 
    iosPicker.modalPresentationStyle = UIModalPresentationFullScreen; 
    iosPicker.delegate = self; 

    [self presentViewController:iosPicker animated:YES completion:^{}]; 

} 

旁注：iosPicker是一个实例在视图控制器的界面中定义的变量。