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将PIL图像转换为wxPython位图图像

python-imaging-library wxpython bitmap python

2

Lorenzo D'Arsiè · 技术社区 · 8 年前

在网上,我能找到的最好的建议是

wx.Bitmap(PIL_image.tobytes())

UnicodeDecodeError: 'utf-8' codec can't decode byte 0x80 in position 59: invalid start byte

或

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 51: invalid continuation byte

1 回复 | 直到 8 年前

1

4

Dalen 8 年前

互联网上到处都有关于如何做到这一点的例子。但也有一些条件没有涵盖在内。尤其是在将wxBitmap()转换回PIL Image()时。

我在这里发布了这些函数的修改版本。转换快速可靠。



from PIL import Image
import wx

def PIL2wx (image):
    width, height = image.size
    return wx.BitmapFromBuffer(width, height, image.tobytes())

def wx2PIL (bitmap):
    size = tuple(bitmap.GetSize())
    try:
        buf = size[0]*size[1]*3*"\x00"
        bitmap.CopyToBuffer(buf)
    except:
        del buf
        buf = bitmap.ConvertToImage().GetData()
    return Image.frombuffer("RGB", size, buf, "raw", "RGB", 0, 1)


# Suggested usage is to put the code in a separate file called
# helpers.py and use it as this:

from helpers import wx2PIL, PIL2wx
from PIL import Image

i = Image.open("someimage.jpg").convert("RGB")
wxb = PIL2wx(i)
# Now draw wxb to screen and let user draw something over it using wxDC() and so on...
# Then pick a wx.Bitmap() from wx.DC() and do something like:
wx2PIL(thedc.GetAsBitmap()).save("some new image.jpg")