AttributeError: 'PhotoImage' object has no attribute '_PhotoImage__photo'

AttributeError: 'PhotoImage' object has no attribute '_PhotoImage__photo'

我正在研究 Yolo3-4-PY 以使用 tkinter 实现它。

我到处查找,但无法解决问题。

当我 运行 程序显示 canvas 但是当我点击 Start Video(btton) 我得到以下错误:

正在从 weights/yolov3.weights 加载权重...完成! /usr/local/lib/python3.5/dist-packages/PIL/ImageTk.py:119: FutureWarning: elementwise 比较失败;返回标量,但将来会执行元素比较 如果模式不在 ["1", "L", "RGB", "RGBA"]:

Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python3.5/tkinter/__init__.py", line 1553, in __call__
return self.func(*args)
File "webcam_demo.py", line 13, in start_video
show_frame()
File "webcam_demo.py", line 39, in show_frame
imgtk = ImageTk.PhotoImage(image=cv2image)
File "/usr/local/lib/python3.5/dist-packages/PIL/ImageTk.py", line 120, in 
__init__
mode = Image.getmodebase(mode)
File "/usr/local/lib/python3.5/dist-packages/PIL/Image.py", line 313, in 
getmodebase
return ImageMode.getmode(mode).basemode
File "/usr/local/lib/python3.5/dist-packages/PIL/ImageMode.py", line 55, in 
getmode
return _modes[mode]
TypeError: unhashable type: 'numpy.ndarray'
Exception ignored in: <bound method PhotoImage.__del__ of 
<PIL.ImageTk.PhotoImage object at 0x7f4b73f455c0>>
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/PIL/ImageTk.py", line 130, in 
__del__    name = self.__photo.name
AttributeError: 'PhotoImage' object has no attribute '_PhotoImage__photo'

问题

在行 imgtk = ImageTk.PhotoImage(image=cv2image) 中,您将一个 numpy 数组 (cv2image) 作为输入传递给 ImageTk.PhotoImage。但是PIL.ImageTk的源码中提到需要PIL镜像。

这是 PIL.ImageTk 的源代码提到的 init() of PhotoImage.

class PhotoImage(object):
    .....
    :param image: Either a PIL image, or a mode string.  If a mode string is
              used, a size must also be given.

解决方案

所以基本上,您必须将 numpy 数组转换为 PIL 图像,然后将其传递给 ImageTk.PhotoImage()。

那么,你能把行imgtk = ImageTk.PhotoImage(image=cv2image)换成imgtk = ImageTk.PhotoImage(image=PIL.Image.fromarray(cv2image))吗?

这会将 numpy 数组转换为 PIL 图像并将其传递到方法中。

参考资料

我从 this source.

中提取了将 numpy 数组转换为 PIL 图像的代码

就我而言,只需添加此行即可更正

root = tkinter.Tk()

完整代码:

root = tkinter.Tk()
image = PIL.Image.open(r"C:\Users\Hamid\Desktop\asdasd.jpeg")
img = ImageTk.PhotoImage(image)
l = Label(image=img)
l.pack()

在标签中放置图片变量时,必须将图片变量初始化为"image"。

例如:(正确的方法)

photo = PhotoImage(file = "C://Users//Carl//Downloads//download.png")
label1 = Label(image = photo)
label1.pack()

例如:(错误的方法)

photo = PhotoImage(file = "C://Users//Carl//Downloads//download.png")
label1 = Label(photo)
label1.pack()