[GSoC] Support more datasets format for visualization with tfds.show_examples()

[Conchylicultor]

Task: Currently tfds.show_examples() only works for supervised images datasets. It would be good to extend the heuristic to more dataset types, like:

• object detection
• 2-images side by side (ex: div2k, cityscapes)
• video (generated as gifs) ?
• texts ?
• audio ?

Instructions:

• Update show_examples visualization.py to support new dataset types of your choice.
• Experiment on Colab to iterate with the visualization, link the Colab to the PR so reviewer can visualize the result
• Update the visualization_test.py with dummy data to test the visualization of the new dataset.
• Only add a single dataset type at a time

As multiple data-type exists, multiple people can work on this issue at the same time

[dhirensr]

@Conchylicultor : working on translate type datasets.
Edit : I have created the changes but not yet sent a PR, could you please review in Colab https://colab.research.google.com/drive/1LDXsE2tAxbn8qnhqpxUnXVpzltpSiYts the show_examples for translate type datasets. I am just printing the texts as they can't really be visualized in the figure like images.
@Conchylicultor : Please review PR #1547

[vinayvr11]

Hello I would like to contribute on this issue. This is my first time so could you please guide me. So I only need to make a visualisation of these formats by implementing some updates in visualization_test.py.

[vinayvr11]

@Conchylicultor : I am working on coco object detection dataset but this dataset was to big to load in my colab so can i use another dataset apart from tensorflow datasets because tensorflow object detection datasets are too big.

[Conchylicultor]

@vinayvr11 Why don't you have a look at our catalog which display the download size ? For instance voc/2007 is about 1GB, https://www.tensorflow.org/datasets/catalog/voc

[VaranRohila]

Hi, I was building code for support of object detection datasets but I got stuck at the values of the Bbox feature. They all are in between 0 and 1 and I checked in the source that it is meant to be that. I am just confused on what scale should I use while plotting the Bounding Boxes?

[VaranRohila]

I figured it out. Here is the notebook link. @Conchylicultor Please review the changes.

[Conchylicultor]

@VaranRohila nice, this looks great. Could you send a PR so I can see and review the code ?

Edit: Oups, I missed the one you sent. Thank you!

[VaranRohila]

I just did! Link

[Conchylicultor]

Just saw this. Thank you!

[harshitadd]

Hi,
Is anyone currently working on audio data visualization - eg. groove
If no, I would be grateful to get any guidance on what features should the visualization entail ( should the output be a few random samples of audio or a visual representation of the audio dataset diversity ( classes, frequency, range of audio ), etc )
edit - both ljspeech and librispeech seem to be inaccessible owing to still being in development phase