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I have the following code (derived from this answer) with my attempt to add the text drawing of numbers. It doesn't work. It doesn't create an image and the cmd prompt is too fast to see which error it is throwing.

#!/usr/bin/env python
import os.path
import sys
from time import strftime
import Image
import ImageDraw
import ImageFont

row_size = 3
margin = 3

def generate_montage(filenames, output_fn):
    images = [Image.open(filename) for filename in filenames]

    width = max(image.size[0] + margin for image in images)*row_size
    height = sum(image.size[1] + margin for image in images)

    montage = Image.new(mode='RGBA', size=(width, height), color=(0,0,0,255))

    image_font = ImageFont.truetype('font/Helvetica.ttf', 18)
    draw = ImageDraw.Draw(montage)

    max_x = 0
    max_y = 0
    offset_x = 0
    offset_y = 0
    for i,image in enumerate(images):
        montage.paste(image, (offset_x, offset_y))

        text_coords = offset_x + image.size[0] - 45, offset_y + 120
        draw.text(text_coords, '#{0}'.format(i+1), font=image_font)

        max_x = max(max_x, offset_x + image.size[0])
        max_y = max(max_y, offset_y + image.size[1])

        if i % row_size == row_size-1:
            offset_y = max_y + margin
            offset_x = 0
        else:
            offset_x += margin + image.size[0]

    montage = montage.crop((0, 0, max_x, max_y))
    montage.save(output_fn)

if __name__ == '__main__':
    basename = strftime("Montage %Y-%m-%d at %H.%M.%S.png")
    exedir = os.path.dirname(os.path.abspath(sys.argv[0]))
    filename = os.path.join(exedir, basename)
    generate_montage(sys.argv[1:], filename)
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1 回答 1

1

您可以通过按Win+打开命令行窗口rcmd Enter。在那里，您执行程序并仍然看到它的输出。另一种选择是包装generate_montage调用，如下所示：

try:
    generate_montage(sys.argv[1:], filename)
except:
    import traceback,time
    traceback.print_exc()
    time.sleep(600)

在任何情况下，最可能的问题是找不到字体，因为您是从相对于 cwd 的目录加载它。传入基本目录，如下所示：

base = os.path.dirname(os.path.abspath(__file__))
try:
    fn = os.path.join(base, 'font', 'Helvetica.ttf')
    image_font = ImageFont.truetype(fn, 18)
except:
    try:
        fn = os.path.join(base, 'font', 'Helvetica-18.pil')
        image_font = ImageFont.load(fn)
    except:
        image_font = ImageFont.load_default()

TTF 字体加载不起作用的原因可能是因为您的 PIL 是在没有 TTF 支持的情况下编译的。

于 2013-07-11T21:04:29.190 回答