transpose-image

name	transpose-image
description	Safely transposes an image, mirroring it across the top-left/bottom-right diagonal.

Transpose Image Skill

This skill safely and correctly transposes an image.

When to use this

Use this skill when the user asks to transpose an image. It ensures the operation is mathematically a transpose (mirroring across the diagonal) and not just a 90-degree rotation.

How to run it

scripts/transpose.sh <input_image> <output_image>

Rules

• Run the script. Do not rewrite what it does as a fresh convert call.
• Understand the difference between -transpose and -rotate 90. They are not the same operation, even though they yield the same output dimensions. -transpose mirrors the image; -rotate 90 turns it.
• Verify before reporting success. Run scripts/verify.sh <input> <output>. It checks that transposing back reproduces the input, and that the result is not what -rotate 90 would have made. Report what it prints.
• Only ImageMagick and bash. No Python.
• If ImageMagick is missing, say so and stop.

Files

scripts/transpose.sh     performs the transpose operation
scripts/verify.sh        verifies the correctness of the transpose