Primary competition visual

Barbados Lands and Surveys Plot Automation Challenge

Helping Barbados
$10 000 USD
Completed (5 months ago)
Computer Vision
Geospatial Data
Optical Character Recognition
895 joined
179 active
Starti
Aug 01, 25
Closei
Oct 19, 25
Reveali
Oct 20, 25
User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited
Bounding Box
Help · 18 Oct 2025, 16:25 · 23

Greetings Zindians;

I hope all is well with you all. I just needed help to see a sample bounding box.

Discussion 23 answers
User avatar
CodeJoe

Sample bounding box?

18 Oct 2025, 16:26
Upvotes 0
User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

yes, by the way am trying to add image. how can i do that. am failing

User avatar
CodeJoe

I don't really get what you need? We are dealing with segmentation not object detection

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Theres an idea am trying to implement

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Is it not that we are supposed to get the segmentation of the green area???

User avatar
CodeJoe

If I get you right, you want the bounding boxes first before implementing segmentation?

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Yes

User avatar
CodeJoe

No some have the brown, green, yellow and at times blue.

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

I already Know wrote an algorithm that draw that bounding box above

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

My confusion is whether the bounding the border edges is affecting IoU

User avatar
CodeJoe

I think most of us did not train an object detection model for that but instead used a segmentation model.

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Did not train an object detection model, its an algorithm

User avatar
CodeJoe

Yes it is definitely. Mask it and see the difference in IOU per ground truth.

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Let me try working something out

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Thanks for responding

GoodDay

User avatar
CodeJoe

You are welcome brother!

User avatar
offei_lad
University of mines and technology

No it is not going to affect the IoU but if you want to be safe add some padding to the box?

User avatar
CodeJoe

Bro it does, From what he wants to do. He uses the bounding boxes to get the exact polygon boundaries before segmenting so that it looks like the masked image of the ground truth - If he pads or he doesn't pad, it will still distort the shape of the polygons do you get it? It will not distort it, if the algorithm gets the exact bounding box. If not, it will distort it by a 4% - God knows how much😂.

User avatar
offei_lad
University of mines and technology

So that he will use the ground truth given to train? 😂, did not think that is what he was trying to do, no way it's working then, Distortion in some of the shapes will be fatal to IoU

User avatar
offei_lad
University of mines and technology

Wait, it seems his algorithm captures the most extreme ends of the polygon, he can convert the ground truth to make the mask border on the extreme edges and he will get a perfect overlap, if his algorithm is accurate then it will

User avatar
Zambia_Kuchalo
Typaflow Software Systems Limited

Noted with thanks,

User avatar
CodeJoe

Now compare it to the ground truth, if it is above 97 IOU, you are likely doing it right

User avatar
CodeJoe

@offei_lad that is very true!