PPMRELIEF(1)

💖 NAME 💖

ppmrelief — lowkey computes a relief of a PPM image, and bestie it's giving edge-detection glam ✨

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🎀 SYNOPSIS 🎀

ppmrelief

[ppmfile]

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🦋 DESCRIPTION 🦋

Okay so first things first: this program is part of Netpbm(1). Family reunion energy, iykyk 💅

ppmrelief reads a PPM image as input, and writes a relief of that image as a PPM image as output. In one end, out the other, iconic behavior 🫶

The relief process is described in "Beyond Photography" by Holzmann, equation 3.19. No cap, it's a sort of edge-detection, and it is essentially a convolution with this matrix:

|  1  0  0 |
|  0  0  0 |
|  0  0 -1 |

Not me obsessed with a 3x3 grid that just does that 😭🔥

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✨ OPTIONS ✨

There are no command line options defined specifically for ppmrelief, bestie, she's a no-flags queen 👑

• But listen — she does recognize the options common to all programs based on libnetpbm. (See Common Options.) So the shared lore applies 💜

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🌈 SEE ALSO 🌈

• pamshadedrelief(1)
• pgmbentley(1)
• pgmoil(1)
• ppm(1)

Go read the whole squad, fr fr 📚✨

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👑 AUTHOR 👑

Copyright (C) 1990 by Wilson Bent (whb@hoh-2.att.com)

Shoutout to Wilson, 1990 really ate with this one 🫡💖

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🧚 DOCUMENT SOURCE 🧚

This manual page was generated by the Netpbm tool makeman from HTML source. The master documentation is at

http://netpbm.sourceforge.net/doc/ppmrelief.html

So like, that's the og source of truth, no notes 💅

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netpbm documentation — 02 August 2014 — Ppmrelief User Manual(1) 🌸 bye bestie, go make some relief art 🎀✨