modified featpyramid and chnged minsize in poslatent.
Merge branch 'master' of https://github.com/SimuJenni/3DDPM

Conflicts:
	test/data/car_4_test.mat
switch between new and old featpyramid
Merge branch 'master' of https://github.com/SimuJenni/3DDPM

Conflicts:
	test/data/car_4_test.mat
	training/train3D.m
added boundary occlusion features and clipped overlap computation.