Baidu Translator (Chinese app), it's in English, easy to use, you can take photo in this App, it will convert it in your required.
Best solution is convert your PDF file into JPG and then Translate in that Baidu Translator App or your can convert online also in other language from JPG file.
Further, If you need any help, don't hesitate to ask from me.
First of all the photos should be taken diagonal angled to have less error. Then there are no. Of apps to estimate it. Though this process is not precise.