wxGUI.photo2image(1grass)

✨ wxGUI.photo2image ✨

ok so bestie, welcome to wxGUI.photo2image — the GRASS User's Manual page for the wxGUI GCP Manager for photo to image registration. it's giving aerial-photo-glow-up energy and honestly? obsessed. 💖

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🌸 DESCRIPTION 🌸

This module is based on g.gui.gcp, the GCP manager of GRASS — like, same DNA, same slay. It's part of the i.ortho.photo suite. 🫶

The whole aim of this module is to give absolute location values to the fiducial points present (in number of 4 or 8 💀 yes literally 4 or 8, no in-between) in a scanned aerial photo.

And why do we care, you ask? Because this is necessary — (manual) scanning introduces distortions, rotations and also may not be limited to scan the boundary of the photo itself. So it is thus necessary to give to each fiducial the exact coordinates in mm as given by the aerial photographic instrument design, which is unique per camera. no cap. 📸

this module requires you to have made a group with your aerial photo (i.group), a camera description file (i.ortho.target) and use them to launch the module. Additional requirements are the order of rectification (1 if no of Fiducials is 4, 2 if no of Fiducials is 8) and an extension file (if not given, defaults to $filename_ip2i_out). 🎀

An example for project imagery60:

g.gui.photo2image group=aerial@PERMANENT raster=gs13.1@PERMANENT camera=gscamera order=2 extension=try --o

📷 Screenshot of g.gui.photo2image

Figure: Screenshot of g.gui.photo2image

For a detailed operation manual please read wxGUI, wxGUI components. 💅

See also video tutorials on GRASS Wiki. 🎥✨

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👀 SEE ALSO 👀

• i.ortho.photo
• i.group
• i.ortho.camera
• i.ortho.target
• i.rectify
• m.transform
• v.rectify

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👑 AUTHORS 👑

• Markus Metz
• Based on the Georectifier (GRASS 6.4.0) by Michael Barton
• Martin Landa, Czech Technical University in Prague, Czech Republic

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💾 SOURCE CODE 💾

Available at: wxGUI GCP Manager for photo to image registration source code (history)

Accessed: Tuesday Sep 08 11:56:22 2026

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© 2003-2026 GRASS Development Team, GRASS 8.5.0 Reference Manual

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GRASS 8.5.0 · wxGUI.photo2image(1grass) — and that's the whole page bestie, you ate that fr fr 🌈💜🦋 periodt.