update depth_render kernel to handle boxm2_scene having multiple block_len
modify compute_index kernel for scene having multiple block length
add bvxm_scene_kml_process to write scene into a kml file
update generate_hypo exe
add executable to parser open street map object to kml file
add executable to refined height map generated by bvxm_world
update to use sate height map
update option to load camera from image header or camera file
update kernel to adapt updated ray tracing function
minor fix bugs
update adding a process to initialize a vxl_byte image
update processes to generate large scale classification map