The Radial Trifocal Tensor: A Tool for Calibrating the Radial Distortion of Wide-Angle Cameras. - SriRam Thirthala; Marc Pollefeys (CVPR (1), 2005)

Calibration of Pan-Tilt-Zoom (PTZ) Cameras and Omni-Directional Cameras. - SriRam Thirthala; Sudipta N. Sinha; Marc Pollefeys (CVPR (2), 2005)

Multi-View Geometry of 1D Radial Cameras and its Application to Omnidirectional Camera Calibration. - SriRam Thirthala; Marc Pollefeys (ICCV, 2005)

Google Newspaper Search - Image Processing and Analysis Pipeline. - Krishnendu Chaudhury; Ankur Jain; SriRam Thirthala; Vivek Sahasranaman; Shobhit Saxena; Selvam Mahalingam (ICDAR, 2009)

Radial Multi-focal Tensors - Applications to Omnidirectional Camera Calibration. - SriRam Thirthala; Marc Pollefeys (Int. J. Comput. Vis., 2012)