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Pregled bibliografske jedinice broj: 916125

Blind image sharpness assessment based on local contrast map statistics


Gvozden, Goran; Grgić, Sonja; Grgić, Mislav
Blind image sharpness assessment based on local contrast map statistics // Journal of visual communication and image representation, 50 (2018), 145-158 doi:10.1016/j.jvcir.2017.11.017 (međunarodna recenzija, članak, znanstveni)


Naslov
Blind image sharpness assessment based on local contrast map statistics

Autori
Gvozden, Goran ; Grgić, Sonja ; Grgić, Mislav

Izvornik
Journal of visual communication and image representation (1047-3203) 50 (2018); 145-158

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
No-reference ; Image quality assessment ; Contrast ; Percentile ; Dynamic range ; Wavelet

Sažetak
This paper presents a fast blind image sharpness/blurriness assessment model (BISHARP) which operates in spatial and transform domain. The proposed model generates local contrast image maps by computing the root-mean-squared values for each image pixel within a defined size of local neighborhood. The resulting local contrast maps are then transformed into the wavelet domain where the reduction of high frequency content is evaluated in the presence of varying blur strengths. It was found that percentile values computed from sorted, level- shifted, high-frequency wavelet coefficients can serve as reliable image sharpness/blurriness estimators. Furthermore, it was found that higher dynamic range of contrast maps significantly improves model performance. The results of validation performed on seven image databases showed a very high correlation with perceptual scores. Due to low computational requirements the proposed model can be easily utilized in real- world image processing applications.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike i računarstva, Zagreb

Citiraj ovu publikaciju

Gvozden, Goran; Grgić, Sonja; Grgić, Mislav
Blind image sharpness assessment based on local contrast map statistics // Journal of visual communication and image representation, 50 (2018), 145-158 doi:10.1016/j.jvcir.2017.11.017 (međunarodna recenzija, članak, znanstveni)
Gvozden, G., Grgić, S. & Grgić, M. (2018) Blind image sharpness assessment based on local contrast map statistics. Journal of visual communication and image representation, 50, 145-158 doi:10.1016/j.jvcir.2017.11.017.
@article{article, year = {2018}, pages = {145-158}, DOI = {10.1016/j.jvcir.2017.11.017}, keywords = {No-reference, Image quality assessment, Contrast, Percentile, Dynamic range, Wavelet}, journal = {Journal of visual communication and image representation}, doi = {10.1016/j.jvcir.2017.11.017}, volume = {50}, issn = {1047-3203}, title = {Blind image sharpness assessment based on local contrast map statistics}, keyword = {No-reference, Image quality assessment, Contrast, Percentile, Dynamic range, Wavelet} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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