Quality Assessment of Resampled Digital Images by Statistical Metrics

Autor

  • WOJCIECH KORNETA Państwowa Wyższa Szkoła Informatyki i Przedsiębiorczości w Łomży, Instytut Informatyki i Automatyki, Polska

DOI:

https://doi.org/10.15584/eti.2017.3.40

Słowa kluczowe:

image quality, image resampling, similarity index

Abstrakt

The visual degradation of resampled (downsampled and then upsampled to the original size) greyscale digital images is quantified by local luminance, contrast and structure statistical comparison indexes. Spatial distributions of these indexes are shown. The global quality of resampled image is quantifiedby the similarity index defined by median values of local indexes. Parameters of this index consistent with the median opinion score are determined. The dependence of global indexes on the size of downsampled image is presented.

Opublikowane

2017-09-30

Jak cytować

KORNETA, W. (2017). Quality Assessment of Resampled Digital Images by Statistical Metrics. Journal of Education, Technology and Computer Science, 21(3), 282–287. https://doi.org/10.15584/eti.2017.3.40

Numer

Dział

PROBLEMY EDUKACJI INFORMATYCZNEJ