1 February 2002 Block matching algorithm for mitigating aliasing effects in undersampled image sequences
Author Affiliations +
Optical Engineering, 41(2), (2002). doi:10.1117/1.1431250
Abstract
Two fundamental motivations exist for designing remote sensing systems that are undersampled: (1) SNR considerations that motivate larger detectors to collect more photoevents per frame time and (2) the desire to maximize the field of view with a finite number of detectors. As a result, many remote sensing systems do not satisfy the Nyquist sampling criterion, leading to measured images corrupted with a defect called aliasing. We describe a localized subpixel motion sensing algorithm that is used to properly place small blocks of the sequence of images in an upsampled space. Localized motion sensing enables dealiasing to be performed on image sequences with more complicated relative motion than simple translation. The presented results show improvements in both the edge response and subjective image quality.
Michael C. Roggemann, William R. Reynolds, "Block matching algorithm for mitigating aliasing effects in undersampled image sequences," Optical Engineering 41(2), (1 February 2002). http://dx.doi.org/10.1117/1.1431250
JOURNAL ARTICLE
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KEYWORDS
Sensors

Image processing

Signal to noise ratio

Image quality

Reconstruction algorithms

Error analysis

Algorithm development

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