Rewrite gallery example for masks to boxes.

[oke-aditya]

Not done yet, I will ping once it's ready for review.

[oke-aditya]

I think I have completed it. Now the tutorial includes converting masks to boxes and

1. torchvision.io to read images and masks.
2. Plotting masks and boxes using torchvision.utils
3. Using FasterRCNN over converted boxes.
4. A simple SegmentationToDetection dataset

Feel free to review @NicolasHug @0x00b1 @datumbox

[NicolasHug]

thanks @oke-aditya , I'll take a look tomorrow

[oke-aditya]

Here is the link to rendered example 😄

https://822905-73328905-gh.circle-artifacts.com/0/docs/auto_examples/plot_repurposing_annotations.html#

P.S. Please take care of grammar and english. Mine is bit Indian flavoured 😄 🇮🇳

[NicolasHug]

Thanks @oke-aditya , I made a few minor comments but this looks great.

Since the example currently only shows how to repurpose masks into bounding boxes, should we change the title of the example to

"Repurposing masks into bounding boxes"

?

I feel like this would be more specific and perhaps more enticing for the reader? We could always change the title later when we add more stuff (we can keep the file name as is)

[oke-aditya]

Hi @NicolasHug feel free to have a review.

[NicolasHug]

Thanks @oke-aditya , I made another pass with minor suggestions, LGTM when addressed :)

[oke-aditya]

Hey @NicolasHug two small things to clear, then we would be good to merge.

[oke-aditya]

We should be good to merge!! @NicolasHug

[NicolasHug]

Thanks a lot @oke-aditya !!
LGTM, I'll merge tomorrow after checking the rendered docs :)

[oke-aditya]

Here is the link for final docs. 😃

https://826691-73328905-gh.circle-artifacts.com/0/docs/auto_examples/plot_repurposing_annotations.html

[NicolasHug]

Thanks again @oke-aditya !!

[oke-aditya]

I learn a lot by contributing. Thanks to you guys. 😀