Poor OCR results from PDF compared to TIFF [253568534]

Bug

Status Update

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Description

ph...@aluma.io

created issue #1

Oct 14, 2022 10:33AM

Hi,

We're using the DOCUMENT_TEXT_DETECTION in production to perform OCR on documents. We've found that the quality of OCR of PDF documents compared to the exact same TIFF to be very poor (with missing characters, extra whitespace etc).

I've attached an example test image in both PDF and TIFF formats. You can see the text is very legible and the OCR from the TIFF is 100% correct. The OCR from the PDF has multiple missing characters.

This leads me to believe that the internal rendering of PDFs performed by the cloud vision API is buggy.

Can anyone shed any light?

Correct OCR results from TIFF:

STANDING ORDER PAYMENT
THANK YOU
RETAIL PURCHASE
INTEREST - PURCHASES
STANDING ORDER PAYMENT
THANK YOU
RETAIL PURCHASE
STANDING ORDER PAYMENT
THANK YOU
############
############
############
############
############
############
Santander UK plc. Registered Office: 2 Triton Square, Regent's Place, London NW1 3AN, United Kingdom. Registered Number 2294747. Registered in England. www.santander.co.uk. Telephone 0800
389 7000. Calls may be recorded or monitored. Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Our Financial
Services Register number is 106054. Santander UK plc is also licensed by the Financial Supervision Commission of the Isle of Man for its branch in the Isle of Man. Deposits held with the Isle of Man
branch are covered by the Isle of Man Depositors' Compensation Scheme as set out in the Isle of Man Depositors' Compensation Scheme Regulations 2010. In the Isle of Man, Santander UK plc's
principal place of business is at 19/21 Prospect Hill, Douglas, Isle of Man, IM1 1ET. Santander and flame logo are registered trademarks.
Page 14 of 19

Poor read from PDF:

STANDING ORDER PAYMENT
THANK YOU
RETAIL PURCHASE
INTEREST PURCHASES
STANDING ORDER PAYMENT
THANK YOU
RETAIL PURCHASE
STANDING ORDER PAY NT
THANK YOU
############
####
###
###
###
####
####
############
Santander UK plc. Registered Office: 2 Triton Square, Regent's Place, London NW1 3AN, United Kingdom. Registered Number 2294747. Registered in England. www.santander.co.uk. Telephone 0800
389 7000. Calls may be recorded or monitored. Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority. Our Financial
Services Register number is 106054. Santander UK plc is also licensed by the Financial Supervision Commission of the Isle of Man for its branch in the Isle of Man. Deposits held with the Isle of Man
branch are covered by the Isle of Man Depositors' Compensation Scheme as set out in the Isle of Man Depositors' Compensation Scheme Regulations 2010. In the Isle of Man, Santander UK plc's
principal place of business is at 19/21 Prospect Hill, Douglas, Isle of Man, IM1 1ET. Santander and flame logo are registered trademarks.
Page 14 of 19

See missing hyphen, missing 'ME' from 'PAYMENT', and various lost hash/pound characters with extra newlines.

The pdf and tiff are attached to this message.

14-redacted.pdf

152 KB

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14-redacted.tiff

418 KB

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Comments

ti...@google.com <ti...@google.com> #2Nov 10, 2022 05:06PM

I have forwarded this request to the engineering team. We will update this issue with any progress updates and a resolution.

Best Regards,
Josh Moyer
Google Cloud Platform Support

ph...@aluma.io <ph...@aluma.io> #3Nov 10, 2022 05:17PM

This is not only useful for IP addresses, but also for many other resources. I understand that names are currently used as identifiers, so this request is probably not trivial to implement. Maybe distinguishing between a (numeric, automatically generated) identifier and a (textual) label is the way to go?

zo...@google.com <zo...@google.com> #4Nov 10, 2022 08:22PM

Is it any hope? We have migrated our IP address to the server with different role, and now the name of this IP address resource doesn't match its role at all. It seems to be trivial enough to momentary reserve static IP address of the old named resource, drop resource, and immediately recreate it with the new name and the old IP address.

Message last modified on Nov 10, 2022 08:23PM

14-redacted.png

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ph...@aluma.io <ph...@aluma.io> #5Nov 11, 2022 11:21AM

This would also improve life when using the Google Deployment Manager (since it otherwise error's out if you've changed a name of an IP)

zo...@google.com <zo...@google.com> #6Nov 11, 2022 07:15PM

Assigned to jp...@google.com.

Over 3 years to get something as basic as renaming a static IP address. Any progress here?

Message last modified on Nov 11, 2022 07:15PM

jp...@google.com <jp...@google.com> #7Nov 11, 2022 11:35PM

Yes, I have a customer who has this exact issue too! Any updates or workarounds would be very appreciated!

Message last modified on Nov 11, 2022 11:35PM

ph...@aluma.io <ph...@aluma.io> #8Nov 14, 2022 09:59AM

Any progress in here?

ph...@aluma.io <ph...@aluma.io> #9Nov 24, 2022 11:15AM

I would like this feature as well.

Poor OCR Samples.zip

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is...@google.com <is...@google.com> Apr 8, 2023 01:14PM

Status: New

lj...@gmail.com <lj...@gmail.com> #10May 5, 2023 09:11AM

Hello, any progress in here? Please is very frustrating.

Issue 253568534

Description

Issue summary

Comments

ti...@google.com <ti...@google.com> #2Nov 10, 2022 05:06PM

ph...@aluma.io <ph...@aluma.io> #3Nov 10, 2022 05:17PM

zo...@google.com <zo...@google.com> #4Nov 10, 2022 08:22PM

ph...@aluma.io <ph...@aluma.io> #5Nov 11, 2022 11:21AM

zo...@google.com <zo...@google.com> #6Nov 11, 2022 07:15PM

jp...@google.com <jp...@google.com> #7Nov 11, 2022 11:35PM

ph...@aluma.io <ph...@aluma.io> #8Nov 14, 2022 09:59AM

ph...@aluma.io <ph...@aluma.io> #9Nov 24, 2022 11:15AM

is...@google.com <is...@google.com> Apr 8, 2023 01:14PM

lj...@gmail.com <lj...@gmail.com> #10May 5, 2023 09:11AM

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