ocr tesseract 访问错误

Question

我有这个代码：

Tesseract* tesseract = [[Tesseract alloc] initWithLanguage:@"eng"];
tesseract.delegate = self;

[tesseract setVariableValue:@"0123456789ABCDEFGHIJKLMNÑOPKRSTUVWXYZabcdefghijklmnñopqrstuvwxyz" forKey:@"tessedit_char_whitelist"]; //limit search
[tesseract setImage:[UIImage imageNamed:@"image1.jpg"]]; //image to check

[tesseract recognize];

这很好用。

但是，如果我更改图像以查看 UIImageVIew 的图像，则无法正常工作 (EXC_BAD_ACCESS)：

Tesseract* tesseract = [[Tesseract alloc] initWithLanguage:@"eng+ita"];
tesseract.delegate = self;

[tesseract setVariableValue:@"0123456789ABCDEFGHIJKLMNÑOPKRSTUVWXYZabcdefghijklmnñopqrstuvwxyz" forKey:@"tessedit_char_whitelist"]; //limit search
[tesseract setImage:self.imageview.image]; //image to check

[tesseract recognize];

你知道错了吗？

Answer 1

Tesseract 应该只允许 UIImage。所以你应该将 Imageview 图像转换为 UIImage 然后执行。 请尝试代码。

Tesseract* tesseract = [[Tesseract alloc] initWithLanguage:@"eng+ita"];
tesseract.delegate = self;

[tesseract setVariableValue:@"0123456789ABCDEFGHIJKLMNÑOPKRSTUVWXYZabcdefghijklmnñopqrstuvwxyz" forKey:@"tessedit_char_whitelist"]; //limit search
UIImage *imageFromImageView = self.imageview.image
[tesseract setImage:imageFromImageView ]; //image to check

[tesseract recognize];