Title :
Multi-view video super-resolution for hybrid cameras using modified NLM and adaptive thresholding
Author :
Lengyel, Robert ; Reza Soroushmehr, S.M. ; Shirani, Shahram
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada
Abstract :
Dual-mode (hybrid) cameras are able to simultaneously shoot two types of video streams: a high resolution with low frame rate stream and similarly a low resolution with high frame rate stream. There are some works on super-resolving the single camera video sequences. In this paper we propose a method for multi-view video super-resolution, utilizing sequences generated from a hybrid camera. In the proposed method we exploit the self-similarity in the spatial and temporal domains to reconstruct a pixel. We modify the nonlocal means method to be applied in our method. Through a combination of techniques including adaptive thresholds and specialized candidate pixel selection schemes, the proposed method reconstructs a high fidelity video stream with considerably improved performance.
Keywords :
image resolution; image segmentation; image sensors; image sequences; video signal processing; video streaming; NLM; adaptive thresholding; hybrid cameras; multiview video superresolution; pixel selection schemes; single camera video sequences; video streams; Cameras; Image reconstruction; Indexes; Signal resolution; Spatial resolution; Vectors; Dual-mode camera; adaptive kernels; hybrid camera; multiview; nonlocal means (NLM); single-view; super-resolution;
Conference_Titel :
Image Processing (ICIP), 2014 IEEE International Conference on
Conference_Location :
Paris
DOI :
10.1109/ICIP.2014.7026100