Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

Impact of tone-mapping operators and viewing devices on visual quality of experience of colour and grey-scale HDR images

Impact of tone-mapping operators and viewing devices on visual quality of experience of colour and grey-scale HDR images

For access to this article, please select a purchase option:

Buy chapter PDF
$16.00
(plus tax if applicable)
Buy Knowledge Pack
10 chapters for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Advances in Telemedicine for Health Monitoring: Technologies, Design and Applications — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Tone-mapping-operators (TMOs) provide a useful means for converting high dynamic range (HDR) images to low dynamic range (LDR) images so that they can be viewed on standard displays, but this may influence the visual quality of experience (QoE) of the end-user. There is a need to understand the impact of TMOs to inform the choice of TMO algorithms for different displays, especially for small-screen-devices (SSDs) such as those used in mobile phones. This is important, as mobile devices are becoming the primary means of consuming multimedia contents. However, few studies have been undertaken to assess the impact of TMOs and viewing devices (especially SSDs) on the visual QoE of the user when using. In this chapter, we evaluate subjectively and objectively, the commonly used TMOs in different displays and resolutions for colour and grey-scale HDR images. Our results show that viewing devices have an influence on the TMOs performance, suggesting the need for a careful choice of TMO to enhance the viewing-QoE of the end-user. As expected, the higher resolution, the better HDR-image quality. Surprisingly, there was no significant difference between the Mean of Opinion Score (MOS) scores for colour and grey-scale images in SSDs. The device and TMOs affect QoE for colour and grey HDR-image equally. We found Shannon entropy (SE) to be a good objective measure of quality for colour and grey HDR images, suggesting that entropy may find use in automated HDR quality control assessment schemes, while; HDR-VDP-2 is a good objective measure for colour HDR image only.

Chapter Contents:

  • 10.1 Introduction
  • 10.2 Comparison of HDR images with traditional images (LDR)
  • 10.3 Characteristics of SSDs
  • 10.4 Methodology
  • 10.4.1 Subjective assessment of the impact of TMOS and viewing devices
  • 10.4.1.1 Experimental set-up
  • 10.4.1.2 The TMOs used in the study
  • 10.4.1.3 Participants
  • 10.4.1.4 Devices used in the study
  • 10.4.2 Objective assessment of the impact of TMOs and viewing devices
  • 10.5 Results
  • 10.5.1 Results from subjective assessments
  • 10.5.2 Results from objective assessments
  • 10.6 Comparison of subjective and objective assessments of HDR image quality
  • 10.7 Discussion
  • 10.8 Conclusions and future work
  • References

Inspec keywords: computer displays; entropy; image colour analysis; quality of experience

Other keywords: automated HDR quality control assessment schemes; SSDs; grey-scale images; tone-mapping-operators; HDR-VDP-2; high dynamic range; tone-mapping operators; colour HDR image; viewing devices; visual QoE; small-screen-devices; visual quality; mobile devices; low dynamic range images; HDR-image quality

Subjects: Optical, image and video signal processing; Computer displays; Computer vision and image processing techniques; Display technology

Preview this chapter:
Zoom in
Zoomout

Impact of tone-mapping operators and viewing devices on visual quality of experience of colour and grey-scale HDR images, Page 1 of 2

| /docserver/preview/fulltext/books/he/pbhe023e/PBHE023E_ch10-1.gif /docserver/preview/fulltext/books/he/pbhe023e/PBHE023E_ch10-2.gif

Related content

content/books/10.1049/pbhe023e_ch10
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address