我正在尝试使用Python来使用Pillow库批量编辑.png文件。这是我使用python的第一个脚本,因此可能存在许多错误和/或错误的编程习惯。
这是我目前的代码:
from PIL import Image
from PIL import ImageDraw
from os.path import basename
import os, sys
path = "D:\Pokemon Game\Pokemon Eggs\Import"
dirs = os.listdir( path )
box = (2,1,30,31)
moveup = (0, -3, -7, -11, -15, -19, -15, -9, -5, 2, 12, 14, 16, 17, 12, 8, 4, 0, -7, -13, -19, -11, -7, -5, -3)
topspace = (36, 38, 42, 46, 50, 55, 50, 44, 40, 34, 24, 22, 20, 18, 24, 28, 32, 36, 42, 48, 55, 46, 42, 40, 38)
bottomspace = (0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 10, 14, 17, 12, 8, 4, 0, 0, 0, 0, 0, 0, 0, 0)
Imagesizes = ((56, 60), (56, 58), (56, 54), (56, 50), (56, 46), (56, 41), (56, 46), (56, 52), (56, 56), (56, 60), (56, 66), (56, 64), (56, 62), (56, 60), (56, 60), (56, 60), (56, 60), (56, 60), (56, 54), (56, 48), (56, 41), (56, 50), (56, 54), (56, 56), (56, 58))
for file in dirs:
#Pick an image file you have in the working directory
egg = Image.open("D:\Pokemon Game\Pokemon Eggs\Import\%s" % str(file))
#Crops white out of image
egg = egg.crop(box)
#Resizes image
egg = egg.resize((56, 60), Image.NEAREST)
#Stretch individual images
frames = []
for size in Imagesizes:
frames.append(egg.resize(size, Image.NEAREST))
#Resize canvas for each individual image - make sure it is clear
for i,image in enumerate(frames):
canvassize = (-20, -36 + moveup[i], 76, 60 + moveup[i])
frames[i]=image.crop(canvassize)
#Fix transparency
for i,image in enumerate(frames):
transparent_area1 = (0,0,20,96)
transparent_area2 = (76,0,96,96)
transparent_area3 = (0,0,96,(topspace[i]))
transparent_area4 = (0,(96-bottomspace[i]), 96, 96)
image.convert('RGBA')
mask=Image.new("1", (96, 96), color=255)
draw=ImageDraw.Draw(mask)
draw.rectangle(transparent_area1, fill=0)
draw.rectangle(transparent_area2, fill=0)
draw.rectangle(transparent_area3, fill=0)
draw.rectangle(transparent_area4, fill=0)
image.putalpha(mask)
#Convert to GIF
我的目标是使无生命的蛋图像最终显示为如下所示的动画图像:
我对代码的问题在于,第35行和第47行之间的整个部分导致透明度的丧失(这是由于第47行)。我不知道如何将列表(图像)转换为动画GIF。
答案 0 :(得分:0)
我建议不要创建'resize'作为反向裁切,而是建议创建一个新图像,并将原始图像粘贴在其顶部。这样可以解决黑色新像素的问题。
粘贴时,您可以提供遮罩-https://pillow.readthedocs.io/en/5.2.x/reference/Image.html#PIL.Image.Image.paste-这表示原始图像仅粘贴在遮罩指示的部分中,而不是简单的矩形中。
对于下一部分的一些内容,https://pillow.readthedocs.io/en/5.2.x/handbook/image-file-formats.html#saving进行了进一步的解释。
保存时,GIF使用附加参数“透明度”和“处置”。处置用于控制下一帧如何使用上一帧-新帧是否粘贴在其顶部?它会忽略它吗?
对于创建动画GIF,Pillow具有参数“ save_all”(用于保存多帧图像)和“ append_images”(用于将其他帧添加至第一张图像)。
因此,将代码的下部更改为此-
#Resize canvas for each individual image - make sure it is clear
for i,image in enumerate(frames):
frame = Image.new('RGBA', (76 + 20, 60 + moveup[i] - (-36 + moveup[i])), '#fff')
image = image.convert('RGBA')
frame.paste(image, (20, 36 - moveup[i]), image)
frames[i] = frame
#Convert to GIF
frames[0].save('out.gif', save_all=True, append_images=frames[1:], transparency=0, disposal=2)