ImageTk Paste

[Yoriz]

O I thought that was going to fix it but it's good that you got rid of the * imports

self.overlay_img = ImageTk.PhotoImage(file=file)

self.overlay_img is a Tkinter-compatible photo image

---

self.photo = ImageTk.PhotoImage(image=Image.fromarray(frame))

self.photo is also a Tkinter-compatible photo image

---

When calling paste I think the passed in image has to be an actual PIL image.

self.photo.paste(self.overlay_img, (0, 0))

---

as self.overlay_img is used in the update method You probably need to keep self.overlay_img as it is

    def update(self):
        ...
        ...
        if self.overlay_img:
            #self.canvas.tag_raise(self.overlay_img)
            self.canvas.create_image(0,0, image=self.overlay_img, anchor=NW)

---

Here is what I hope will fix it

When you make self.overlay_img try also making a pill image

    def overlay(self):
        file = filedialog.askopenfile(
            mode='rb', defaultextension='.png',title="Choose Overlay Image", filetypes=[("PNG Files", '*.png')])
        if file:
            self.overlay_img = ImageTk.PhotoImage(file=file)
            self.pil_overlay_img = Image.open(file)

Then change

if isTrue and self.overlay_img:
    self.photo.paste(self.overlay_img, (0, 0))

to

if isTrue and self.pil_overlay_img:
    self.photo.paste(self.pil_overlay_img, (0, 0))