We here introduce an image/video retargeting method that operates arbitrary aspect ratios resizing achieved in real-time performances. Most of the literature retargeting approaches sacrifice real-time performances in behalf of quality. On the other hand, existing fast methods provide arguable results. We can obtain a valuable trade-off between effectiveness and efficiency. The method named Spring Simulation Retargeting (SSR) is mainly based on a physical springs-based simulation. The media are assumed as flexible objects composed of particles and springs with different local stiffness properties, related to the visual importance of the content. The variation of the object size generates elastic forces which determine a new arrangement of the particles, according to the elongation of their connected springs. The deformations are mostly introduced in regions where low importance content is present, while high saliency regions are preserved as desired. The proposed method is evaluated and compared both for images and videos, against several state of the art methods and a user study is taken to assess the results, showing the value of the approach.

Gallea, R., Ardizzone, E., Pirrone, R. (2014). Physical Metaphor for Streaming Media Retargeting. IEEE TRANSACTIONS ON MULTIMEDIA, 16(4), 971-979 [10.1109/TMM.2014.2305917].

Physical Metaphor for Streaming Media Retargeting

GALLEA, Roberto;ARDIZZONE, Edoardo;PIRRONE, Roberto
2014

Abstract

We here introduce an image/video retargeting method that operates arbitrary aspect ratios resizing achieved in real-time performances. Most of the literature retargeting approaches sacrifice real-time performances in behalf of quality. On the other hand, existing fast methods provide arguable results. We can obtain a valuable trade-off between effectiveness and efficiency. The method named Spring Simulation Retargeting (SSR) is mainly based on a physical springs-based simulation. The media are assumed as flexible objects composed of particles and springs with different local stiffness properties, related to the visual importance of the content. The variation of the object size generates elastic forces which determine a new arrangement of the particles, according to the elongation of their connected springs. The deformations are mostly introduced in regions where low importance content is present, while high saliency regions are preserved as desired. The proposed method is evaluated and compared both for images and videos, against several state of the art methods and a user study is taken to assess the results, showing the value of the approach.
Settore ING-INF/05 - Sistemi Di Elaborazione Delle Informazioni
Gallea, R., Ardizzone, E., Pirrone, R. (2014). Physical Metaphor for Streaming Media Retargeting. IEEE TRANSACTIONS ON MULTIMEDIA, 16(4), 971-979 [10.1109/TMM.2014.2305917].
File in questo prodotto:
File Dimensione Formato  
06739135.pdf

Solo gestori archvio

Descrizione: Articolo principale
Dimensione 1.52 MB
Formato Adobe PDF
1.52 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/96568
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact