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Aeolun • last Sunday at 10:25 PM • 1 reply • view on HN

I think claude could have easily used a script to calculate the positions of the planets exactly here, instead of trying to use the frankly horrible image recognition.

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fluidcruft • last Sunday at 10:35 PM

Claude could probably have written a script to do it. I'm hunting assets to confirm.

Edit: yup very easy for claude. Most of the wall time was spent installing cv2 in a venv (uv dropped python 3.14 on claude, which seemed to get stuck compiling numpy or something so I interrupted and told claude to just use python 3.13 instead).

ME: In this directory there are two images: @p-pressbox.gif and @screenshot.png. @p-pressbox.gif is an image that exists somewhere inside @screenshot.png Write a script that finds the precise location

CLAUDE: Looking at the images, I can see that p-pressbox.gif (the spaceship with "PRESS BOX SHUTTLE" text) appears in the upper-left area of screenshot.png. I'll write a Python script using OpenCV to find the precise location.

[ some venv stuff/telling claude to use uv and python 3.13 ]

CLAUDE: The script found the precise location of p-pressbox.gif within screenshot.png:

  | Measurement         | Value           |
  |---------------------|-----------------|
  | Top-left corner     | (87, 110)       |
  | Bottom-right corner | (218, 166)      |
  | Center              | (152, 138)      |
  | Template size       | 131 × 56 pixels |
  | Match confidence    | 97.2%           |

  The script is at /tmp/search/find_image.py and uses OpenCV's template matching with normalized cross-correlation.
ME> As part of the output create a visualization of the @p-pressbox.gif positioned on top of the original screenshot

CLAUDE: Done! The visualization shows a green rectangle highlighting the exact location where p-pressbox.gif was found within the screenshot. The match is at coordinates (87, 110) to (218, 166).

I confirmed the result was correct.

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