These images are hemispherical panoramas, taken as addition to my Virtualvienna Project. You can find there some of the panoramas as full panorama in a bigger size than here.
S. Lavhate, P. Bagul, P. Gawade, and M. Bhanushali. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (3):
1457--1461(March 2015)
Y. LeCun, F. Huang, and L. Bottou. Computer Vision and Pattern Recognition, 2004. CVPR 2004. Proceedings
of the 2004 IEEE Computer Society Conference on, 2, page II-97--104 Vol.2. (2004)
M. Shetiya, N. Mane, P. Uplap, and P. Musale. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (3):
1421--1424(March 2015)