Oh yes! Absolutely! However, I only would use it for private purposes, I do not plan to write an application for it, that I'd release. I would do a lot of preprocessing (mostly cutting into boxes, which I would then save in separate bitmaps) and then upload that.
Just these days I am in the process of converting the scans of a recipe-book, that is not available electronically, but which I want to have on my smartphone. There is a PDF online, but that is only a slideshow of bitmap images. It also has ornamental frames on each page, ornaments in text, etc. And as I did not find the results of open source OCR apps to be satisfactory, I started roaming the commercial sector (I still have to evaluate ABBYY Finereader, but that would be very expensive).
Ideally, so I thought, a household would have an account, that is realized via a basic subscription plus pay by volume, and then available as a REST API. The subscription provider would offer a simple user client like https://www.roxyappsdev.com/applications/windows-10-applicat... and a mobile client (think "document scan", with batch and auto deskew/process) but otherwise work (hard ;-)) on the recognition. Now, if hand-writing would also be possible, that would be great!
BTW: What is 'OSD'? And why not some graphics, that explain the different page-selection/-recognition modes?
The above question is different from the below question:
> I own this website MyFreeOCR.com... I would like to get feedback
The feedback I have is (1) website is garbage - too many ads. Clearly not targeting devs who might want an API. (2) OCR API seems like a cool product. Focus on that. Privacy of my data if I call API? How is data trained? What language/alphabet/etc? How do I try it out ? What formats?
Bonus feedback, the best dev API sites are easy to see value proposition and easy to find API key + docs. Count clicks required to get API key + find template cURL copy/paste. And count discrete pages. Even if "coming soon" - show me the critical path today so I can find it later. If you want to start with an "upload a pic" site, still do above, but structure the upload tool as a "try out the API without needed to leave browser" where you upload a photo and can tune other params via web form.
PS. Lots of OCR api's exist, so it could be a cool project but what is your goals here? Do you want to startup? Why your tool and not BigCloud?