Comments (1)
Hi,
Thank you for your suggestion.
Due to I do not have any experience in TF2, I just made a little changes in the python eval expression:
(${vn}.numpy() * 255.0 if (hasattr(${vn}, 'dtype')) and (${vn}.dtype == np.float64 or ${vn}.dtype == np.float32) else ${vn}.numpy()) if callable(getattr(${vn}, 'numpy', None)) else (${vn} * 255.0 if (isinstance(${vn}, (np.ndarray)) and (${vn}.dtype == np.float64 or ${vn}.dtype == np.float32)) else ${vn})
As you noticed that I used "callable(getattr(${vn}, 'numpy', None))" to test if the variable is a tensor. So you must ensure Eager Execution is enabled in TF2 to use this extension. Then I found it's very lucky that tf.dtype is same as np.dtype, so I can directly use np.float32 instead of tf.float32 to test the type avoiding forced "import tensorflow".
Now this change bring a tiny trick to customize if your object cannot be a numpy array directly, just add a "numpy()" method and an additional "dtype" property supporting the normalized image to your object, even you can make a metaclass or decorator something else to take effect for convenience.
for example:
class DebugViewImageWrapper:
def __init__(self, a):
self.a = a
def numpy(self):
return self.a
@property
def dtype(self):
return self.a.dtype
img = cv2.imread("test.jpg")
normalized_img = img.astype(np.float32) / 255.
wrapped_img = DebugViewImageWrapper(img)
wrapped_img = DebugViewImageWrapper(normalized_img)
from simply-view-image-for-python-opencv-debugging.
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from simply-view-image-for-python-opencv-debugging.