The parameter of shape has little effect on the resulting image

[lonelywm]

I keep ep and tp to be 'zero' and sp to be 'random' in 3dmm

sp = bfm.get_shape_para('random')
ep = bfm.get_exp_para('zero')
vertices = bfm.generate_vertices(sp, ep)
tp = bfm.get_tex_para('zero')
colors = bfm.generate_colors(tp)
colors = np.minimum(np.maximum(colors, 0), 1)

The generated images are almost the same.
(I generate the BFM.mat, BFM_info.mat, BFM_uv.mat, pncc_code.mat based on your tutorial)