pamcomp
composites two images
TLDR
Composite images
$ pamcomp [overlay.pam] [base.pam] > [output.pam]
With transparency$ pamcomp -alpha=[mask.pgm] [overlay.pam] [base.pam] > [output.pam]
Specify position$ pamcomp -xoff=[100] -yoff=[50] [overlay.pam] [base.pam] > [output.pam]
SYNOPSIS
pamcomp [options] overlay base
DESCRIPTION
pamcomp composites two images. Overlays with transparency support.The tool combines PAM/PNM images. Part of Netpbm.
PARAMETERS
OVERLAY
Foreground image.BASE
Background image.-alpha FILE
Alpha mask file.-xoff PIXELS
X offset.-yoff PIXELS
Y offset.-align POS
Alignment position.
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
CAVEATS
Part of Netpbm. PAM/PNM format. Alpha channel support.
HISTORY
pamcomp is part of Netpbm for image compositing operations.