what's the meaning of 'scale' in mpii dataset?

[bearpaw]

what's the meaning of 'scale' in mpii dataset?

[bearpaw]

The scale keeps the height of the person as about 200 px. You should set the scale according to the groundtruth annotation or the detection bounding boxes.

[CoinCheung]

Hi, thanks for explaining!!

If I did not misunderstand your answer above. I should compute the bounding box height with h=200 x scale, and with the center coordinates (c0, c1), I could compute the y coordinate of the upper left point with: y1=c1-h/2. Is this the correct story?

If I am not wrong about the heigt, what about the bounding box width? Shall I treat the bounding box as some rectangle box?

[YinZ-510]

@CoinCheung
Hi, I also want to train this network on on my own dataset, my input picuture size is 720x1280，
but I don't know how to set the scale and center.
Can you give me some advice?

[DonaldKam]

@bearpaw The scale keeps the height of the person as about 200 px. You should set the scale according to the groundtruth annotation or the detection bounding boxes.
-----------------Well I guss it does not have to be height, but also can be width. Actually, it should be max(h,w), Make sense?

[xiaoxin05]

@CoinCheung Have you solved this problem? About scale and center？