Bad texture using default settings for owl.png

[wzds2015]

I am testing the pipeline using owl.png and default settings. The mesh is okay but texture is really bad. I tried to increase crop size from 192 to 256, also significantly modified a couple of parameters in instant-nsr-pl, but don't see a lot improvement: 1) imSize, 2) num_samples_per_ray, 3) train_num_rays, 4) max_steps, 5) imSize=2048.