Hacker News Reader

Comment by 123yawaworht456 | Hacker News Reader

when I was working with Tesseract, a particular issue I had was its tendency to parse a leading "+" as "4" about half the time. e.g. "+40% ROI" would get parsed as "440% ROI".

the font was perfectly fine, the screenshots were crispy PNGs.

A LLM can't really correct that. I appreciate that Tesseract exists, and it's mostly fine for non-serious things, but I wouldn't let it anywhere near critical data.

View on HN

ME:

Fix this text extracted with OCR:

Return on Investment (RO1) is a crucial metric used to evaluate the efficiency and profitability of an investment. If you have achieved an ROI of 440%, it indicates a strong performance and successful investment strategy. To calculate ROI, you subtract the initial cost of the investment from the final value of the investment, then divide that difference by the initial cost, and multiply by 100 to get a percentage. For example, if you invested $10000 and the value grew to 214,000, your ROI would be calculated as follows:

(+attached image with the text)

GPT-4O:

Here's the corrected text based on the extracted OCR:

*Original OCR Extracted Text:*

> Return on Investment (RO1) is a crucial metric used to evaluate the efficiency and profitability of an investment. If you have achieved an ROI of 440%, it indicates a strong performance and successful investment strategy. > To calculate ROI, you subtract the initial cost of the investment from the final value of the investment, then divide that difference by the initial cost, and multiply by 100 to get a percentage. For example, if you invested $10000 and the value grew to 214,000, your ROI would be calculated as follows:

*Corrected Text:*

> Return on Investment (ROI) is a crucial metric used to evaluate the efficiency and profitability of an investment. If you have achieved an ROI of *+40%*, it indicates a strong performance and successful investment strategy. > To calculate ROI, you subtract the initial cost of the investment from the final value of the investment, then divide that difference by the initial cost, and multiply by 100 to get a percentage. For example, if you invested *$10,000* and the value grew to *$14,000*, your ROI would be calculated as follows:

Changes made:

- Corrected "RO1" to "ROI"

- Corrected "440%" to "+40%"

- Corrected "$10000" to "$10,000"

- Corrected "214,000" to "$14,000"

I assume this was 4o? Whenever someone says GPT would be "useless" at the given task, I think they've only tried it with older/dumber models. Almost without fail 4 seems to get the answer right.

Yes!

If you're attaching the image, why even send the text? It can read it, no?

To reduce hallucinations.

https://arxiv.org/pdf/2311.03287

Huh, very interesting, thank you. In my (limited) tests with GPT-4 vision (before 4o), it did really well with just the image, but it's good to know that the OCR can help.

Yes, I also found that Tesseract has still some serious and obvious problems, and they are probably better fixed at that level instead of in another layer.

Reply on news.ycombinator.com