Figure 21.

The test with scale-up images that shows a better 3D pose estimation. (a) The original image size $352\times 240$. The 3D estimation result shows some deformation (b) The scaled image to $704\times 480$. No more severe deformation is found. Yet, it is not enough to extract gait features (c) The scaled image to $1126\times 768$. The human subject size is roughly $100\times 250$ which is big enough as an input to 2D and 3D pose estimator.