Gimp Magicwand cut script

cut_gimp.py

# This file contains a function for cutting a subject out of an image.
# Right now it just uses the top left corner, and gimp's magic wand. Could do something.

import gimpfu
import os

# if debug==True, we place on a green background
def convert(filename, new_name, debug=False):
    img = pdb.gimp_file_load(filename, filename)
    layer = pdb.gimp_image_merge_visible_layers(img, 1)

    pdb.gimp_context_set_antialias(True)
    pdb.gimp_context_set_feather(True)
    pdb.gimp_context_set_feather_radius(5, 5)
    #pdb.gimp_context_set_sample_criterion
    #pdb.gimp_context_set_sample_threshold
    #pdb.gimp_context_set_sample_transparent

    # 0 == CHANNEL_OP_ADD
    pdb.gimp_image_select_contiguous_color(img, 0, layer, 0, 0)

    if not pdb.gimp_edit_cut(layer):
      print "Couldn't cut...?"

    if debug:
      # 1 == RGBA_IMAGE
      # 0 == NORMAL_MODE
      layer_bg = pdb.gimp_layer_new(img, pdb.gimp_image_width(img), pdb.gimp_image_height(img), 1, "bg", 100, 0)

      pdb.gimp_image_insert_layer(img, layer_bg, None, 1) # insert to bottom

      # BRIGHT FUCKING GREEN
      pdb.gimp_context_set_foreground((0, 255, 0))

      pdb.gimp_drawable_fill(layer_bg, 0) # 0 == FOREGROUND_FILL

      pdb.gimp_layer_add_alpha(layer)

      layer = pdb.gimp_image_merge_visible_layers(img, 1)
    

    pdb.gimp_file_save(img, layer, new_name, new_name)
    pdb.gimp_image_delete(img)

try:
  convert(os.environ["PY_CUT_INPUT"], os.environ["PY_CUT_OUTPUT"], os.environ.has_key("PY_CUT_DEBUG"))
finally:
  pdb.gimp_quit(1)

cut_gimp.sh

#!/bin/bash

# Shell script for calling cut_gimp.py sanely
# Takes two args, input and output

dir=$(cd -P -- "$(dirname -- "$0")" && pwd -P)

export PY_CUT_INPUT="$1"
export PY_CUT_OUTPUT="$2"

gimp -n -i --batch-interpreter=python-fu-eval -b - < $dir/cut_gimp.py