AttributeError: 'FigureCanvasAgg' object has no attribute 'set_window_title'

[devxor]

Hi all,

executing below simple code I'm getting an error. The error is in imgaug.py, not in the code below. Anybody any feedback? Is it a bug? I'm expecting an image with bounding boxes be displayed.

import imageio
import imgaug as ia
from imgaug.augmentables.bbs import BoundingBox, BoundingBoxesOnImage
%matplotlib inline
ia.seed(1)

image = imageio.imread("https://upload.wikimedia.org/wikipedia/commons/8/8e/Yellow-headed_caracara_%28Milvago_chimachima%29_on_capybara_%28Hydrochoeris_hydrochaeris%29.JPG")
image = ia.imresize_single_image(image, (298, 447))

bbs = BoundingBoxesOnImage([
    BoundingBox(x1=0.2*447, x2=0.85*447, y1=0.3*298, y2=0.95*298),
    BoundingBox(x1=0.4*447, x2=0.65*447, y1=0.1*298, y2=0.4*298)
], shape=image.shape)

ia.imshow(bbs.draw_on_image(image, size=2))

Error message:

AttributeError                            Traceback (most recent call last)
Cell In[1], line 15
      8 image = ia.imresize_single_image(image, (298, 447))
     10 bbs = BoundingBoxesOnImage([
     11     BoundingBox(x1=0.2*447, x2=0.85*447, y1=0.3*298, y2=0.95*298),
     12     BoundingBox(x1=0.4*447, x2=0.65*447, y1=0.1*298, y2=0.4*298)
     13 ], shape=image.shape)
---> 15 ia.imshow(bbs.draw_on_image(image, size=2))

File ~/miniconda3/envs/imgaug/lib/python3.11/site-packages/imgaug/imgaug.py:2120, in imshow(image, backend)
   2117 w = max(w, 6)
   2119 fig, ax = plt.subplots(figsize=(w, h), dpi=dpi)
-> 2120 fig.canvas.set_window_title("imgaug.imshow(%s)" % (image.shape,))
   2121 # cmap=gray is automatically only activate for grayscale images
   2122 ax.imshow(image, cmap="gray")

AttributeError: 'FigureCanvasAgg' object has no attribute 'set_window_title'

[cire333]

I also get a similar error running the example posted on my mac.

   # points
    image = np.zeros((64, 64, 3), dtype=np.uint8)
    kps = [ia.Keypoint(x=10.5, y=20.5), ia.Keypoint(x=60.5, y=60.5)]
    kpsoi = ia.KeypointsOnImage(kps, shape=image.shape)
    image_with_kps = kpsoi.draw_on_image(image, size=7, color=(0, 0, 255))
    ia.imshow(image_with_kps)

I get the error message:

File "/Users/macbook/Projects/PythonML/mlkit/lib/python3.9/site-packages/imgaug/imgaug.py", line 2120, in imshow
    fig.canvas.set_window_title("imgaug.imshow(%s)" % (image.shape,))
AttributeError: 'FigureCanvasMac' object has no attribute 'set_window_title'

My error seems to thrown from the same function, but the error seems slightly different on the Mac.

[cire333]

This worked for me:

Open "imgaug.py" file, change line 2120 to:
fig.canvas.manager.set_window_title("imgaug.imshow(%s)" % (image.shape,))