Questions on the keypoint encoder

Hi Shiyu, great repo! I have two questions for you:

1. In config.py, what’s your rationale behind using 16 for self.hm_sigma = self.img_max_size / self.hm_stride / 16.? How do you pick that number?

2. In stage2/keypoint_encoder.py, why do you need to reduce the input image size when calculating the Gaussian key point? In addition, why do you have to subtract 1.0 in kpts[:,:2] = (kpts[:,:2] - 1.0) / stride?

Thanks!

[gathierry]

I don’t know either. But it’s good to discuss with you. I am looking forward to your notes as well. For now, I’m gonna close this issue. But it can be reopen at any time.

[alwc]

• No sorry! I’ve actually found your code to be quite readable. I’ve written down a lot of extra documentations while learning your code. I’ll share with you once I’m done.

• Regarding OHKM, I’ve just briefly glanced the paper, let me take a deeper look of it again.

題外話：我想請問一般天池用戶去那裡討論的？官方的"技術圈"基本上是沒甚麼人（難得看到你的分享！）。