Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials (Contributo in atti di convegno)

Type

• Prodotto della ricerca (Classe)
• Contributo in atti di convegno (Classe)

Label

• Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials (Contributo in atti di convegno) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1117/12.738779 (literal)

Alternative label

• C. Lastri, B. Aiazzi, S. Baronti, L. Alparone (2007)
  Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials
  in SPIE Europe International Symposium on “Remote Sensing”, Firenze, Italia, 17-21 Settembre 2007
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• C. Lastri, B. Aiazzi, S. Baronti, L. Alparone (literal)

Pagina inizio

• 67480M-1 (literal)

Pagina fine

• 67480M-12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

• Volume pubblicato nell'Ottobre 2007. (literal)

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• http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=824093 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume

• Proceedings of SPIE Remote Sensing Europe 2007, Image and Signal Processing for Remote Sensing XIII (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 6748 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#volumeInCollana

• 6748 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• Atti pubblicati in: SPIE Vol. 6748, Image and Signal Processing for Remote Sensing XIII, L. Bruzzone (Ed.), n. 67480M, Oct. 2007. (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• Lavoro che propone un metodo innovativo di allocazione della distorsione in caso di compressione con perdita per sequenze iperspettrali. (literal)

Note

• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• IFAC-CNR (literal)

Titolo

• Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn

• 978-0-8194-6906-9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume

• L. Bruzzone (literal)

Abstract

• The problem of distortion allocation varying with wavelength in lossy compression of hyperspectral imagery is investigated. Distortion is generally measured either as maximum absolute deviation (MAD) for near-lossless methods. e.g. differential pulse code modulation (DPCM), or as mean square error (MSE) for lossy methods (e.g. spectral decorrelation followed by JPEG 2000). Also the absolute angular error, or spectral angle mapper (SAM), is used to quantify, spectral distortion. A band add-on (BAO) technique was recently introduced to calculate a modified version of SAM. Spectral bands are iteratively selected in order to increase the angular separation between two pixel spectra by exploiting a mathematical decomposition of SAM. As a consequence, only a subset of the original hyperspectral bands contributes to the new distance metrics, referred to as BAO-SAM, whose operational definition guarantees its monotonicity as the number of bands increases. Two strategies of inter-band distortion allocation are compared: given a target average bit rate, distortion, either MAD or MSE, may be set to be constant varying with wavelength. Otherwise it may be allocated proportionally to the noise level on each band, according to the virtually-lossless protocol. Thus, a different quantization step size depending on the estimated standard deviation of the noise, is used to quantize either prediction residuals (DPCM) or wavelet coefficients (JPEG 2000) of each spectral band, thereby determining band-varying MAD/MSE values. Comparisons with the uncompressed originals show that the average spectral angle mapper (SAM) is minimized by constant distortion allocation. Conversely, the average BAO-SAM is minimized by the noise-adjusted variable spectral distortion allocation according to the virtually lossless protocol. Preliminary results of simulations performed on reflectance data obtained from compressed radiance data show that, for a given compression ratio, the virtually-lossless approach minimizes both BAO-SAM and SAM; hence, discrimination of spectrally similar materials, e.g. clays, is significantly expedited. (literal)

Editore

• SPIE-International Society for Optical Engineering (Editore)

Prodotto di

• Sistemi, metodi di elaborazione ed applicazioni di telerilevamento aerospaziale (ICT.P10.005.001) (Modulo)
• Institute of applied physics \"Nello Carrara\" (IFAC) (Istituto)

Autore CNR

• BRUNO AIAZZI (Unità di personale interno)
• LUCIANO ALPARONE (Unità di personale esterno)
• STEFANO BARONTI (Unità di personale interno)
• CINZIA LASTRI (Unità di personale esterno)

Insieme di parole chiave

• Parole chiave di "Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• BRUNO AIAZZI (Unità di personale interno)
• STEFANO BARONTI (Unità di personale interno)
• LUCIANO ALPARONE (Unità di personale esterno)
• CINZIA LASTRI (Unità di personale esterno)

Prodotto

• Institute of applied physics \"Nello Carrara\" (IFAC) (Istituto)
• Sistemi, metodi di elaborazione ed applicazioni di telerilevamento aerospaziale (ICT.P10.005.001) (Modulo)

Editore di

• SPIE-International Society for Optical Engineering (Editore)

Insieme di parole chiave di

• Parole chiave di "Interband distortion allocation in lossy compression of hyperspectral imagery: impact on global distortion metrics and discrimination of materials" (Insieme di parole chiave)