Example – press the link to watch the video (degraded vs. restored)
1. Simulation: Restoration of Staggered TDI Motion-Degraded Video
2. Real Motion: Restoration of Staggered TDI Motion-Degraded Video
Super-resolution reconstruction of a video captured by a vibrated TDI camera
By: Oren Haik and Yitzhak Yitzhaky
Journal of Electronic Imaging
Various applications such as industrial product inspection, or low signal-to-noise situations (as thermal imaging), employ a time-delay and integration (TDI) scanning imaging technique. Due to common vibration sources such as the camera platform motion or the thermal-detector’s cooling system, the acquired image may be degraded by severe shift-variant geometric distortions and motion-blur. These vibrations are utilized here in means of super-resolution in order to create an improved high resolution video sequence from the degraded lower resolution sequence, in two main stages: sub-pixel motion estimation with respect to translations and rotations, used for point spread function (PSF) estimation, followed by an efficient implementation of the projection onto convex sets (POCS) method. This work generalizes and considerably improves a previous technique for restoration of a single image captured by a translational vibrated staggered-TDI camera [Appl. Opt. 43(22), 4345 (2004)]. The proposed method was implemented with both simulated videos and real degraded thermal videos. A comparative analysis shows an advantage of the proposed method over others, in restoring the vibrated videos.