Verfahren zur Auswertung der Perzeptuellen Visuellen Qualität mit Niedriger Komplexität für Komprimierte JPEG2000-Ströme

Details

Veröffentlichungs-Nr.

EP3151565

Aktenzeichen

EP16192071

Anmeldetag

3. Oktober 2016

Veröffentlichung

1. Oktober 2025

Erteilung

1. Oktober 2025

Rechtsraum

EP

IPC

H04N19/63H04N19/44H04N19/86G06T5/73G06T7/00

Abstract

A method of detecting image quality in a wavelet transform-encoded image includes receiving wavelet transform-encoded image data partitioned into tiles, each tile partitioned into a number of subbands, evaluating a number of wavelets in fewer than the number of subbands, assigning a measure to each of the subbands evaluated for each tile, using the measures to determine a perceptual visual quality score for the image, and adjusting operation of the decoder based upon the perceptual visual quality score. A decoding system includes a memory to receive wavelet-transformed compressed image data having a predetermined number of subbands, and a decoder to determine a number of wavelet coefficients in a subset of the predetermined number of subbands, measure an amount of blur in the image data based upon the number of wavelet coefficients, and adjust a decoding process based upon the amount of blur.

Anmelder

Firmen

Project Giants, LLC
Tektronix, Inc.

Land

🇺🇸 USA

Fachgebiete