Solved by ptrblck in post #7 
              
              
                Sure, no worries. 
Here is a small example using random values for your imgs: 
imgs = {}
imgs['bicubic_np'] = np.random.randn(1, 576, 576)
tensors_to_plot = torch.from_numpy(imgs['bicubic_np'])
torchvision.utils.save_image(tensors_to_plot, 'test.png')

You have just to use the last two lines of code…