Title:
METHOD FOR BLIND IMAGE QUALITY ASSESSMENT BASED ON CONDITIONAL HISTOGRAM CODEBOOK
Document Type and Number:
WIPO Patent Application WO/2016/145571
Kind Code:
A1
Abstract:
Disclosed in the present invention is a method for blind image quality assessment based on a conditional histogram codebook. The method comprises the following steps: extracting features of distorted images to obtain neighboring DNT (Divisive Normalization Transform) coefficient joint conditional histograms of the distorted images, wherein the distorted images comprise distorted images for training and distorted images to be assessed; connecting various curves in the neighboring DNT coefficient joint conditional histograms in an end-to-end fashion, to obtain high-dimensional feature vectors of the distorted images; clustering the high-dimensional feature vectors of all the distorted images for training in a preset database, to obtain a clustering-based conditional histogram codebook and all code words in the conditional histogram codebook; searching all the code words in the conditional histogram codebook for matched code words matched with the high-dimensional feature vectors of the distorted images to be assessed; and calculating quality assessment indexes of the distorted images to be assessed, according to the matched code words. The present invention is more delicate in depicting the degree of statistical independence of the neighboring DNT coefficient joint conditional histograms, and the calculated image quality assessment indexes are more accurate.
Inventors:
CHU YING (CN)
Application Number:
PCT/CN2015/074203
Publication Date:
September 22, 2016
Filing Date:
March 13, 2015
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
G06T7/00
Domestic Patent References:
| WO2009065151A2 | 2009-05-22 |
Foreign References:
| CN104751456A | 2015-07-01 | |||
| CN103366378A | 2013-10-23 |
Other References:
SHI, YONGCHANG.: "No-Reference Image Quality Assessment of Two-dimension Code Based on Codebook", SHIP ELECTRONIC ENGINEERING, vol. 34, no. 244, 31 October 2014 (2014-10-31), pages 89, XP032080324
Attorney, Agent or Firm:
SHENZHEN REFINED INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
深圳市瑞方达知识产权事务所（普通合伙） (CN)
深圳市瑞方达知识产权事务所（普通合伙） (CN)
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