Import PSD Files

Live2D Cubism has an official Photoshop script for cleaning up the drawing for modeling. However, we have to do some manual work if we are using drawing apps other than Photoshop.

The most important feature Photoshop provides is Autocrop. This ensures that all model component layers are compact and have no empty pixels. Many free drawing apps like Medibang, ibis Paint, or, GIMP, don't have this feature. However, we may achieve the same effect using the command line tool imagemagick.

# if you haven't installed homebrew
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

# use homebrew to install imagemagick
brew install imagemagick

We can use imagemagick from the command line to extract each layer of our PSD file as a TIFF image, trim the empty pixels from each TIFF image, and stack the TIFF images as a layered PSD file. The ordering of the layers might have changed during the process.

convert live2d.psd tiff/img_%d.tiff
convert tiff/*.tiff -trim trimmed/img_%d.tiff
convert trimmed/*.tiff live2d_trimmed.psd