demo.py config files about omni3d

[Alam45]

hi @rpartsey,

Do I understand correctly that category_meta.json files for each category are the same for different types of models?

yes. omni3d, indoor and outdoor have three different categories. They also vary in number of categories like omni3d has 50, indoor has 38 and outdoor has 11 categories. Both indoor and outdoor categories have zero overlaps. For example, you cannot find 'pedestrian' in indoor categories as it belongs to outdoor category. While omni3d combines both cotagories. The category_meta.json files for each of the three types will be different based on the number of categories and the corresponding labels (regrdless the type of model).