Ground Truth 2D landmarks in 300W-LP dataset
chuanli11 opened this issue · 2 comments
Hi, I downloaded the 300W-LP dataset and noticed it has a landmarks folder
ubuntu@ubuntu-desktop:/media/ubuntu/WDC/data/300W-LP/300W_LP$ ls
AFW AFW_Flip Code HELEN HELEN_Flip IBUG IBUG_Flip landmarks LFPW LFPW_Flip
The mat files in that folder contain pts_2d and pts_3d for the augmented faces. Interesting the 2D landmarks are not simply orthogonal projections of the 3D landmarks, but "snapped" to the facial contour as shown in the picture below.
Red: pts_3d
Blue: pts_2d
It would be great if you can explain how those pts_2d landmarks are generated. Thank you.
You may contact Xiangyu Zhu to consult the generation details.
I guess the landmarks are generated by warping the 2d landmarks of the original image. If the wrap relation between the orignal image and synthesized image is known, the 2D landmarks can be calculated with the affine operation like grid_sample.
You may contact Xiangyu Zhu to consult the generation details. I guess the landmarks are generated by warping the 2d landmarks of the original image. If the wrap relation between the orignal image and synthesized image is known, the 2D landmarks can be calculated with the affine operation like grid_sample.
Thank you, I will ask Xiangyu.