spottopgm

Convert SPOT satellite images to PGM

TLDR

Convert the default band of a SPOT image to PGM

$ spottopgm [input.spot] > [output.pgm]

Select a specific band (1, 2 or 3)

$ spottopgm -2 [input.spot] > [output.pgm]

Crop to a rectangular region of columns and lines

$ spottopgm [firstcol] [firstline] [lastcol] [lastline] [input.spot] > [output.pgm]

SYNOPSIS

spottopgm [-1|-2|-3] [firstcol firstline lastcol lastline] [file]

spottopgm converts images in the SPOT satellite format to PGM (Portable Graymap) format. The SPOT format is used by imagery from the SPOT (Satellite Pour l'Observation de la Terre) Earth-observation satellite system, which captures high-resolution imagery for cartography, agriculture, and environmental monitoring. This tool is part of the Netpbm image-processing toolkit, which provides converters between many image formats.

PARAMETERS

-1, -2, -3

Select which of the three spectral bands to extract (infrared, visible, and ultraviolet, though the Netpbm author acknowledges the exact mapping is uncertain). Only one band at a time is produced; combined multispectral PPM output is not supported.

firstcol firstline lastcol lastline

When supplied, crop the output to the rectangle bounded by the given column/line indices.

INSTALL

sudo apt install netpbm

sudo dnf install netpbm

sudo pacman -S netpbm

sudo apk add netpbm

sudo zypper install netpbm

brew install netpbm

nix profile install nixpkgs#netpbm