Visual Quality Index Implementations

• Heinz Hofbauer (Maintainer)

Implementation of some metrics:

• ess
• lss
• psnr
• psnry
• ssim
• lfbvs
• nice
• leg
• sun10a
• yao09a

The implementation aims to preventing image file type hassle and usability from shell scripts rather than fast runtime.
Note: This software uses freeimagelibplus.

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Changelog:

Version 0.3.1 (2011-7-27):

Usage:

• Metrics added:
• sun10a from Jing Sun and Zhengquan Xu and Jin Liu and Ye Yao: ''An objective visual security assessment for cipher-images based on local entropy'', 2010.
• yao09a from Y. Yao and Z. Xu and J. Sun: ''Visual security assessment for cipher-images based on neighborhood similarity'', 2009.

Version 0.3 (2011-5-24):

Usage:

• Metrics added:
• Local edge direction and gradient (LEG) from An Effective and Efficient Visual Quality Index Based on Local Edge Gradients by Hofbauer et al.
• Local feature based Visual Security (LFBVS) from Visual Security Evaluation for Video Encryption by Tong et al.
• Natual image contour evaluation (NICE) from Natural Image Utility Assessment using Image Contours by Rouse et al.

Interface:

• Options can now be passed to metrics with -o, the metric has to deal with the options as it sees fit.
  NOTE: This breaks compatibility with older metrics. This can be fixed by including a dummy options function:
  void metric_passopt(char *passopt){ }

Version 0.2:

Added support for yuv 4:2:0 videos.

Version 0.1:

Initial release

The code is available upon request.

Please fill out this form to request a download link for the latest VQI:

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