Skip to Main content Skip to Navigation
Journal articles

Fine granularity access in interactive compression of 360-degree images based on rate-adaptive channel codes

Navid Mahmoudian Bidgoli 1 Thomas Maugey 1 Aline Roumy 1
1 Sirocco - Analysis representation, compression and communication of visual data
IRISA-D5 - SIGNAUX ET IMAGES NUMÉRIQUES, ROBOTIQUE, Inria Rennes – Bretagne Atlantique
Abstract : In this paper, we propose a new interactive compression scheme for omnidirectional images. This requires two characteristics: efficient compression of data, to lower the storage cost, and random access ability to extract part of the compressed stream requested by the user (for reducing the transmission rate). For efficient compression, data needs to be predicted by a series of references that have been pre-defined and compressed. This contrasts with the spirit of random accessibility. We propose a solution for this problem based on incremental codes implemented by rate-adaptive channel codes. This scheme encodes the image while adapting to any user request and leads to an efficient coding that is flexible in extracting data depending on the available information at the decoder. Therefore, only the information that is needed to be displayed at the user's side is transmitted during the user's request, as if the request was already known at the encoder. The experimental results demonstrate that our coder obtains a better transmission rate than the state-of-the-art tile-based methods at a small cost in storage. Moreover, the transmission rate grows gradually with the size of the request and avoids a staircase effect, which shows the perfect suitability of our coder for interactive transmission.
Document type :
Journal articles
Complete list of metadatas

Cited literature [41 references]  Display  Hide  Download

https://hal.inria.fr/hal-02946795
Contributor : Navid Mahmoudian Bidgoli <>
Submitted on : Wednesday, September 23, 2020 - 2:12:50 PM
Last modification on : Friday, September 25, 2020 - 3:10:30 AM

File

bare_jrnl.pdf
Files produced by the author(s)

Identifiers

Citation

Navid Mahmoudian Bidgoli, Thomas Maugey, Aline Roumy. Fine granularity access in interactive compression of 360-degree images based on rate-adaptive channel codes. IEEE Transactions on Multimedia, Institute of Electrical and Electronics Engineers, In press, ⟨10.1109/TMM.2020.3017890⟩. ⟨hal-02946795⟩

Share

Metrics

Record views

27

Files downloads

96