- Data Science - lists.blindcoders.com

Dash vs. Streamlit for GUI Development for a Data Science Project!

by Khalid K

Hi data scientists, I hope this message finds you well. I want to gather some insights on using Dash or Streamlit for GUI development. Specifically, I'm interested in the following: 1. Ease of Use with Screen Readers: Has anyone used Dash or Streamlit with a screen reader? Which one is more accessible and user-friendly? 2. Learning Curve: Which tool requires less time to learn and implement effectively? I have a few sighted friends who speak highly of Streamlit, mentioning its simplicity and ease of deployment -they don't use screen-readers though! My goal is to develop a GUI interface that can: Generate graphs Allow selection from a list of cryptocurrencies Provide scenarios like predicting next month's prices if I sell Load results and graphs quickly upon selection Your experiences with either tool would be greatly appreciated. Cheers, Khalid

May 22, 2024

Re: Notebooks for all May meeting 5/16 @ 9am PST

by Tony Fast

hey y'all. i wanted to share the video recording of our may notebooks for all meeting. <https://youtu.be/3pag8E8EuMg> we covered a bunch of topics about data science, software development, assistive technology, and accessibility. thank you to everyone that joined and participated. i'll post about future events and hope some of y'all might enjoy joining to share your experience and learn from others.

May 22, 2024

Re: Notebooks for all May meeting 5/16 @ 9am PST

by Tony Fast

thanks for the support patrick! we'll be meeting in 2 hours to hear about blind coding experiences; the good, the bad, and the ugly. hope to see some of y'all on the zoom call <https://zoom.us/j/91857677315?pwd=Yzh5b1U5MUsraUhVM3NuajNoSVRldz09#success>. best, tony.

May 16, 2024

Re: Notebooks for all May meeting 5/16 @ 9am PST

by Patrick Smyth

Hey folks, I won't be able to make it this Thursday, but Tony is doing some great work on accessible interfaces to Jupyter notebooks, consider dropping by if you're free at that time. Hope everyone is well. Best, Patrick

May 15, 2024

Notebooks for all May meeting 5/16 @ 9am PST

by Tony Fast

hey blind coders, join us this thursday at 9am pst to discuss accessible coding experiences at the notebooks for all community meeting. our plan for this meeting is to hear about your access experiences and tricks to participating in data science and programming. we want to hear the good, the bad, and the ugly. you can read a full agenda on the notebooks for all github discussions <https://github.com/Iota-School/notebooks-for-all/discussions/109>. please respond there or this mailing if you have any questions or special access needs. feel free to invite your friends, allies, and accomplices. *apologies for the last minute notice.* a special thanks to the iota school <https://iota-school.github.io/> for providing resources to host this event. best, tonyfast <https://github.com/tonyfast> -- Tony Fast Github <http://github.com/tonyfast> | LinkedIn <https://www.linkedin.com/in/tonyfast/> | Homepage <http://tonyfast.github.io>

May 14, 2024

Re: OCR Tools

by Patrick Smyth

Sounds like you got things working to your satisfaction. On Linux I use something called ocrmypdf, and I think it requires -i and -o (for input and output) flags. I do OCR PDFs a lot, even if they have been OCRd before it's often low quality OCR for some reason. There's a website called Library Genesis you can use to find PDFs of practically anything. I won't link to it but a little research should turn it up, or email me directly with a request for a URL. I don't feel bad about using it as a blind person, as many regular library resources and specialized databases are not open to us, and in some cases copyright has been waived for us to access resources. Patrick On Sat, Apr 20, 2024, at 1:02 AM, Nikhil Vohra wrote: > I actually found a software called OCRmyPDF that can be installed through PIP, and it uses Tesseract as a dependency (as well as Ghostscript): > > https://ocrmypdf.readthedocs.io/en/latest/introduction.html > > Since I already had Anaconda installed, I only had to download and install Ghostscript <https://ghostscript.com/releases/gsdnld.html> and Tesseract <https://github.com/UB-Mannheim/tesseract/wiki> before running > >> pip install ocrmypdf > > I was successfully able to run > >> ocrmypdf input.pdf output.pdf > > and I now have a local setup for running OCR on PDFs! > > Best, > Nikhil > > On Fri, Apr 19, 2024 at 11:58 PM Nikhil Vohra <nikhil.vohra(a)stonybrook.edu> wrote: >> Thanks! >> >> I just installed it on Windows, but I get the following error: >> >>> Error in pixReadStream: Pdf reading is not supported >> >> Most of the full-length documents that I would need to convert to screen-reader-accessible text are in the form of PDFs. For simple pictures, I could just use NVDA. Do you know of any workaround? >> >> I used the command >> >>> tesseract my_file.pdf my_output.txt >> >> Is there some other command or flag to use for PDFs? >> >> Best, >> Nikhil >> >> On Fri, Apr 19, 2024 at 5:39 PM Patrick Smyth <patrick(a)iotaschool.com> wrote: >>> __ >>> I use OCR pretty extensively. On Linux, I've written a short script that lets me draw boxes on the screen, and the contents get screenshotted and sent to tessaract, then to espeak. I can also do the current window, etc, and I write a little script to constantly scan and read the screen for trying to play some games, though I don't use it that often. >>> >>> On Windows, I combined a utility called Capture2Text with a tool that scans the clipboard, TextAloud, to do something similar. I just set up TextAloud to read aloud any clipboard updates, and set Capture2Text to dump the results of OCR to the clipboard, and the tools work very well together. I got through a number of games such as Disco Elysium with this technique. I do have some limited low vision, though, that lets me draw boxes around blobs on the screen. >>> >>> I've been working more with neural networks lately and I think they might have some applications for OCR, since they might be able to do the part where the block of text is identified. I've noticed that OCR tends to fail if the box isn't drawn tightly around the text before being sent to tessaract. >>> >>> In case it's useful to anyone, here's a link to the short script to OCR text on Linux. You need tessaract, espeak, and gnome-screenshot on your path. >>> >>> http://dccccc.cc/files/ocr.txt >>> >>> >>> >>> _______________________________________________ >>> Data Science mailing list -- datascience(a)blindcoders.com >>> To unsubscribe send an email to datascience-leave(a)blindcoders.com

April 20, 2024

Re: OCR Tools

by Nikhil Vohra

I actually found a software called OCRmyPDF that can be installed through PIP, and it uses Tesseract as a dependency (as well as Ghostscript): https://ocrmypdf.readthedocs.io/en/latest/introduction.html Since I already had Anaconda installed, I only had to download and install Ghostscript <https://ghostscript.com/releases/gsdnld.html> and Tesseract <https://github.com/UB-Mannheim/tesseract/wiki> before running pip install ocrmypdf I was successfully able to run ocrmypdf input.pdf output.pdf > and I now have a local setup for running OCR on PDFs! Best, Nikhil On Fri, Apr 19, 2024 at 11:58 PM Nikhil Vohra <nikhil.vohra(a)stonybrook.edu> wrote: > Thanks! > > I just installed it on Windows, but I get the following error: > > Error in pixReadStream: Pdf reading is not supported > > > Most of the full-length documents that I would need to convert to > screen-reader-accessible text are in the form of PDFs. For simple pictures, > I could just use NVDA. Do you know of any workaround? > > I used the command > > tesseract my_file.pdf my_output.txt > > > Is there some other command or flag to use for PDFs? > > Best, > Nikhil > > On Fri, Apr 19, 2024 at 5:39 PM Patrick Smyth <patrick(a)iotaschool.com> > wrote: > >> I use OCR pretty extensively. On Linux, I've written a short script that >> lets me draw boxes on the screen, and the contents get screenshotted and >> sent to tessaract, then to espeak. I can also do the current window, etc, >> and I write a little script to constantly scan and read the screen for >> trying to play some games, though I don't use it that often. >> >> On Windows, I combined a utility called Capture2Text with a tool that >> scans the clipboard, TextAloud, to do something similar. I just set up >> TextAloud to read aloud any clipboard updates, and set Capture2Text to dump >> the results of OCR to the clipboard, and the tools work very well together. >> I got through a number of games such as Disco Elysium with this technique. >> I do have some limited low vision, though, that lets me draw boxes around >> blobs on the screen. >> >> I've been working more with neural networks lately and I think they might >> have some applications for OCR, since they might be able to do the part >> where the block of text is identified. I've noticed that OCR tends to fail >> if the box isn't drawn tightly around the text before being sent to >> tessaract. >> >> In case it's useful to anyone, here's a link to the short script to OCR >> text on Linux. You need tessaract, espeak, and gnome-screenshot on your >> path. >> >> http://dccccc.cc/files/ocr.txt >> >> >> >> _______________________________________________ >> Data Science mailing list -- datascience(a)blindcoders.com >> To unsubscribe send an email to datascience-leave(a)blindcoders.com >> >

April 20, 2024

Re: OCR Tools

by Nikhil Vohra

Thanks! I just installed it on Windows, but I get the following error: Error in pixReadStream: Pdf reading is not supported Most of the full-length documents that I would need to convert to screen-reader-accessible text are in the form of PDFs. For simple pictures, I could just use NVDA. Do you know of any workaround? I used the command tesseract my_file.pdf my_output.txt Is there some other command or flag to use for PDFs? Best, Nikhil On Fri, Apr 19, 2024 at 5:39 PM Patrick Smyth <patrick(a)iotaschool.com> wrote: > I use OCR pretty extensively. On Linux, I've written a short script that > lets me draw boxes on the screen, and the contents get screenshotted and > sent to tessaract, then to espeak. I can also do the current window, etc, > and I write a little script to constantly scan and read the screen for > trying to play some games, though I don't use it that often. > > On Windows, I combined a utility called Capture2Text with a tool that > scans the clipboard, TextAloud, to do something similar. I just set up > TextAloud to read aloud any clipboard updates, and set Capture2Text to dump > the results of OCR to the clipboard, and the tools work very well together. > I got through a number of games such as Disco Elysium with this technique. > I do have some limited low vision, though, that lets me draw boxes around > blobs on the screen. > > I've been working more with neural networks lately and I think they might > have some applications for OCR, since they might be able to do the part > where the block of text is identified. I've noticed that OCR tends to fail > if the box isn't drawn tightly around the text before being sent to > tessaract. > > In case it's useful to anyone, here's a link to the short script to OCR > text on Linux. You need tessaract, espeak, and gnome-screenshot on your > path. > > http://dccccc.cc/files/ocr.txt > > > > _______________________________________________ > Data Science mailing list -- datascience(a)blindcoders.com > To unsubscribe send an email to datascience-leave(a)blindcoders.com >

April 20, 2024

Re: OCR Tools

by Patrick Smyth

I use OCR pretty extensively. On Linux, I've written a short script that lets me draw boxes on the screen, and the contents get screenshotted and sent to tessaract, then to espeak. I can also do the current window, etc, and I write a little script to constantly scan and read the screen for trying to play some games, though I don't use it that often. On Windows, I combined a utility called Capture2Text with a tool that scans the clipboard, TextAloud, to do something similar. I just set up TextAloud to read aloud any clipboard updates, and set Capture2Text to dump the results of OCR to the clipboard, and the tools work very well together. I got through a number of games such as Disco Elysium with this technique. I do have some limited low vision, though, that lets me draw boxes around blobs on the screen. I've been working more with neural networks lately and I think they might have some applications for OCR, since they might be able to do the part where the block of text is identified. I've noticed that OCR tends to fail if the box isn't drawn tightly around the text before being sent to tessaract. In case it's useful to anyone, here's a link to the short script to OCR text on Linux. You need tessaract, espeak, and gnome-screenshot on your path. http://dccccc.cc/files/ocr.txt

April 19, 2024

OCR Tools

by Nikhil Vohra

Dear all, I am trying to find a simple OCR tool to run locally. I came across Tesseract <https://tesseract-ocr.github.io/>, and I was wondering if anyone has experience using it, thoughts about it, or suggestions for OCR in general. Note: NVDA has built-in OCR (triggered with NVDA+R), but this only works for the current navigator object; I am trying to find a tool that works for entire documents. Thanks, Nikhil

April 19, 2024