DAMASK_EICMD/processing/post/imageDataRGB.py

121 lines
5.3 KiB
Python
Executable File

#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string
import numpy as np
from optparse import OptionParser
from PIL import Image, ImageDraw
import damask
scriptID = string.replace('$Id$','\n','\\n')
scriptName = os.path.splitext(scriptID.split()[1])[0]
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Generate PNG image from data in given column vector containing RGB tuples.
""", version = scriptID)
parser.add_option('-l','--label', dest='label', type='string',
help='column containing RGB triplet')
parser.add_option('-d','--dimension', dest='dimension', type='int', nargs=2,
help='data dimension (width height)')
parser.add_option('--fliplr', dest='flipLR', action='store_true',
help='flip around vertical axis')
parser.add_option('--flipud', dest='flipUD', action='store_true',
help='flip around horizontal axis')
parser.add_option('--crop', dest='crop', type='int', nargs=4, metavar=' '.join(['int']*4),
help='pixels cropped on left, right, top, bottom')
parser.add_option('--show', dest='show', action='store_true',
help='show resulting image')
parser.add_option('-N','--pixelsize', dest='pixelsize', type='int',
help='pixels per data point')
parser.add_option('-x','--pixelsizex', dest='pixelsizex', type='int',
help='pixels per data point along x')
parser.add_option('-y','--pixelsizey', dest='pixelsizey', type='int',
help='pixels per data point along y')
parser.set_defaults(label = None,
dimension = [],
flipLR = False,
flipUD = False,
crop = [0,0,0,0],
pixelsize = 1,
pixelsizex = 1,
pixelsizey = 1,
show = False,
)
(options,filenames) = parser.parse_args()
if options.dimension == []: parser.error('dimension of data array missing')
if options.pixelsize > 1: (options.pixelsizex,options.pixelsizey) = [options.pixelsize]*2
# --- loop over input files -------------------------------------------------------------------------
if filenames == []:
filenames = ['STDIN']
for name in filenames:
if name == 'STDIN':
file = {'name':'STDIN', 'input':sys.stdin, 'output':sys.stdout, 'croak':sys.stderr}
file['croak'].write('\033[1m'+scriptName+'\033[0m\n')
else:
if not os.path.exists(name): continue
file = {'name':name,
'input':open(name),
'output':open(os.path.splitext(name)[0]+ \
('' if options.label == None else '_'+options.label)+ \
'.png','w'),
'croak':sys.stderr}
file['croak'].write('\033[1m'+scriptName+'\033[0m: '+file['name']+'\n')
table = damask.ASCIItable(file['input'],file['output'],
buffered = False, # make unbuffered ASCII_table
labels = True)
table.head_read() # read ASCII header info
# ------------------------------------------ process data ------------------------------------------
errors = []
missing_labels = table.data_readArray(options.label)
if len(missing_labels) > 0:
errors.append('column%s %s not found'%('s' if len(missing_labels) > 1 else '',
', '.join(missing_labels)))
if table.label_dimension(options.label) != 3:
errors.append('column %s has wrong dimension'%options.label)
if errors != []:
file['croak'].write('\n'.join(errors))
table.close(dismiss = True) # close ASCII table file handles and delete output file
continue
# convert data to shape and arrange according to given options
if options.dimension != []: table.data = table.data.reshape(options.dimension[1],options.dimension[0],3)
if options.flipLR: table.data = np.fliplr(table.data)
if options.flipUD: table.data = np.flipud(table.data)
table.data = table.data.\
repeat(options.pixelsizex,axis=1).\
repeat(options.pixelsizey,axis=0)
table.data *= 1. if np.any(table.data > 1.0) else 255.0 # ensure 8 bit data range
(height,width,bands) = table.data.shape
im = Image.fromarray(table.data.astype('uint8'), 'RGB').\
crop(( options.crop[0],
options.crop[2],
width -options.crop[1],
height-options.crop[3]))
# ------------------------------------------ output result -----------------------------------------
im.save(file['output'],format = "PNG")
if options.show: im.show()
table.close() # close ASCII table file handles