def write_images(model_path, fgvc_data_dir, images_nos, options):
if options.crop:
# read box information
box_info = {}
with open(path.join(fgvc_data_dir, 'images_box.txt')) as ibf:
for line in ibf:
result = line.split()
img_no, coords = result[0], map(int, result[1:])
box_info[img_no] = coords
for image_no in images_nos:
image_file = '%s.%s' % (image_no, FGVC_IMAGE_SUFFIX)
img = Image(path.join(fgvc_data_dir, 'images', image_file))
if options.crop:
# although FGVC pages says the orgin is (1,1)
# still there's some coordinates in box have 0 value
# so don't do adjustment - 1px difference should be OK
x1, y1, x2, y2 = box_info[image_no]
img = img.crop(x1, y1, x2, y2)
else:
# remove out banner
img = img.crop(0, 0, img.width, img.height-FGVC_BANNER_HEIGHT)
if options.reduce_color_space:
img = reduce_color_space(img, fast=True)
if options.grayscale:
img = img.grayscale()
# normalize to width
img = img.resize(NORMALIZED_WIDTH, int(img.height*1.0*NORMALIZED_WIDTH/img.width))
img.save(path.join(model_path, image_file))
