python PIL个人使用记录
1、gif转png
def gif_to_png(filename: str):
"""
gif图片一帧一帧转换为很多png图片
:param filename:
:return:
"""
filename = filename.strip()
filename = os.path.abspath(filename)
assert os.path.splitext(filename)[-1].lower() == '.gif', f'文件后缀不是.gif "{filename}"' # 是否是.gif后缀
assert os.path.isfile(filename), f'不存在文件"{filename}"' # 是否存在文件
index = 1
basename = os.path.basename(filename)
basename_without_suffix = basename.replace(os.path.splitext(filename)[-1], '')
image = Image.open(filename)
iterator: Iterator = ImageSequence.Iterator(image) # GIF图片流的迭代器
save_path = os.path.join('.', 'image', basename_without_suffix)
save_path = os.path.abspath(save_path)
if os.path.exists(save_path):
shutil.rmtree(save_path)
if not os.path.exists(save_path):
os.makedirs(save_path)
for img in iterator: # img 是 GifImageFile对象
save_name = os.path.join(save_path, f'frame_{index}.png')
img.save(save_name)
index += 1
print(f"save to dir '{save_path}'")
return save_path
2、png转gif
def png_to_gif(path: str, filename: str):
"""
遍历文件夹图片, 按照名称排序 然后合成gif图片
:param path:
:param filename:
:return:
"""
path = os.path.abspath(path.strip())
assert os.path.isdir(path), f'不存在文件夹"{path}"' # 是否存在文件
filename = os.path.abspath(filename.strip())
if not os.path.exists(os.path.dirname(filename)):
os.makedirs(os.path.dirname(filename))
files = os.listdir(path)
files.sort(key=lambda x: int(str(x).replace('frame_', '').replace('.png', '')))
frames = [] # 读入缓冲区
for img in files:
f = os.path.join(path, img)
assert os.path.splitext(f)[-1].lower() == '.png', f'文件后缀不是.png "{filename}"' # 是否是.png后缀
frames.append(imageio.imread(f))
imageio.mimsave(filename, frames, 'gif', duration=0.02)
print(f"save to '{filename}'")
return filename
学习链接 https://www.cnblogs.com/fly-kaka/p/11694011.html
3、获取所有像素点的颜色
def get_all_pixel(file):
"""
获取所有的像素点的颜色
:param file:
:return:
"""
img = Image.open(file)
width = img.size[0]
height = img.size[1]
ret = list()
for x in range(width):
for y in range(height):
pixel = img.getpixel((x, y))
print(f"{x},{y} -----> {pixel}")
ret.append(dict(x=x, y=y, pixel=pixel))
return ret