How can I view Tensor as an image?

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I learned some data with tensorflow.

For the test, I saw the shape of the final result.

It was tensor of (1, 80, 80, 1).

I use matplotlib or PIL to do this,

I wanted to see the image after changing to a pie array.

But I could not change the tensor to numpy.

I could not do anything because of the session even if I used eval ().

There is no way to convert tensor to numpy.

Can I see the tensor as an image?

(mytensor1) # mytensor

arr = np.ndarray(mytensor1)
arr_ = np.squeeze(arr)
plt.imshow(arr_)
plt.show()

but there is error message: TypeError: expected sequence object with len >= 0 or a single integer

You can use squeeze function from numpy. For example

arr = np.ndarray((1,80,80,1))#This is your tensor
arr_ = np.squeeze(arr) # you can give axis attribute if you wanna squeeze in specific dimension
plt.imshow(arr_)
plt.show()

Now, you can easily display this image (e.g. above code, assuming you are using matplotlib.pyplot as plt).

After calculating a tensor, how can I show it as a image?, The immediate error you're seeing is because Tensor.eval() only works when there is a "default Session ". This requires that either (i) you're executing in a with tf  The tensor has this format Tensor("Slice:0", shape=(375, 1242, 1), dtype=float32). My question is how can I plot and save this tensor as an image and how can I convert it to binary doing something like this thres=0.5, image = image > thres?

If your image has only one channel (ie: black and white), you can also useplt.matshow:

image = np.random.uniform(0,1, (1,80,80,1))
image = image.reshape(80,80)
plt.matshow(image)
plt.show() 

How to visualize/display a data image in 'torch.FloatTensor' type , I have an image data named Img, and it is in 'torch.FloatTensor' format, I tried to use torchvision.transforms and/or matplotlib to display i, but I  If instead, you want to save the whole batch of images, you have to loop over the batch (using tf.map_fn) and encode the image singularly (because tf.image.encode_jpeg works on single images). Then, from python, extract every encoded images and save it to the disk.

For people using PyTorch, the simplest way that I know is this:

import matplotlib.pyplot as plt

plt.imshow(my_tensor.numpy()[0], cmap='gray')

That should do it

How to show a image in jupyter notebook with pytorch easily , like in itorch, I can use itorch.image to show a image in the notebook. transfer the pytorch tensor(img_tensor) to numpy array img_np_arr.shape # check shape​  I've got a bunch of images in a format similar to Cifar10 (binary file, size = 96*96*3 bytes per image), one image after another (STL-10 dataset). The file I'm opening has 138MB. I tried to read &

Lecture Notes: Basic Image Processing, We will be using pytorch's Tensors to manipulate images as tensors, and the See below: # # image_copy[1].mul_(2).clamp_(0, 1) # # Plot the image_copy. Retrieve the images. Before you start any training, you will need a set of images to teach the network about the new classes you want to recognize. You can use an archive of creative-commons licensed flower photos from Google. Note: all images are licensed CC-BY, creators are listed in the LICENSE.txt file. import pathlib data_dir = tf.keras

Displaying image data in TensorBoard, Using the TensorFlow Image Summary API, you can easily log tensors and arbitrary images and view them in TensorBoard. This can be extremely helpful to​  TensorFlow Extended for end-to-end ML components See the Images guide. Classes. Extracts crops from the input image tensor and resizes them.

Load images, See the performance section below. It lacks fine-grained control. It is not well integrated with the rest of TensorFlow. To load the files as a tf.data  The view function is meant to reshape the tensor. Say you have a tensor. import torch a = torch.range(1, 16) a is a tensor that has 16 elements from 1 to 16(included). If you want to reshape this tensor to make it a 4 x 4 tensor then you can use

Comments
  • can you show the whole error log? also, what's your datatype for mytensor1?
  • error is "TypeError: expected sequence object with len >= 0 or a single integer" datatype is float32