Video quality evaluation using ST-CIELAB

Video quality evaluation using ST-CIELAB
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使用 ST-CIELAB 评估视频质量

DOI:
10.1117/12.348439
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发表时间:
1999
期刊:
1996 8th European Signal Processing Conference (EUSIPCO 1996)
影响因子:
--
通讯作者:
C. Lambrecht
C. Lambrecht
中科院分区:
--
文献类型:
--
作者:
Xin Tong;D. Heeger;C. Lambrecht

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随着互联网和数字视频技术的快速发展,视频质量的感性评价变得越来越重要。由于主观视频质量测量成本高、耗时长,需要一种基于人类视觉模型的自动评估程序。我们提出了一种称为时空CIELAB (ST-CIELAB)的视频质量度量。ST-CIELAB是空间CIELAB (S-CIELAB)图像质量度量的扩展,它本身是CIELAB颜色标准的扩展。ST- CIELAB度量是基于人类对比敏感度的空间、时间和色彩模型。考虑到人类时间和空间敏感性的视频质量度量很少被提出,它们是基于多分辨率、子带分解和人类模式敏感性模型的。ST-CIELAB是单分辨率的,比多分辨率模型具有计算优势。ST-CIELAB评级以JND为单位,提供了对评级的有意义的解释。ST-CIELAB度量被设计为适合已发表的对比灵敏度数据,并且ST-CIELAB与已建立的CIELAB标准向后兼容,即,它减少到均匀色场的CIELAB。我们通过对MPEG视频序列进行心理物理学实验来测试ST-CIELAB度量,以了解ST-CIELAB评分与主观评分之间的相关性。
With the rapid growth of internet and digital video technology, perceptual assessment of video quality is becoming more important. An automatic assessment procedure based on some human vision model is desirable because subjective video quality measurement is costly and time- consuming. We propose a video quality metric called spatio- temporal CIELAB (ST-CIELAB). ST-CIELAB is an extension of the spatial CIELAB (S-CIELAB) image quality metric, that is itself an extension of the CIELAB color standard. The ST- CIELAB metric is based on a spatial, temporal, and chromatic model of human contrast sensitivity. Few such video quality metrics, accounting for human temporal as well as spatial sensitivities, have been proposed and they are based on multi-resolution, subband decomposition, models of human pattern sensitivity. ST-CIELAB is single-resolution which offers computational advantages over multi-resolution models. The ST-CIELAB rating is in units of JND, providing a meaningful interpretation of the rating. The ST-CIELAB metric was designed to fit published contrast sensitivity data, and ST-CIELAB is backward compatible with the well- established CIELAB standard, i.e., it reduces to CIELAB for uniform color fields. We tested the ST-CIELAB metric by performing psychophysics experiments with MPEG video sequences to see how well ST-CIELAB ratings correlate with subjective ratings.
DOI: 10.1364/josa.70.001121
发表时间: 1980-09
影响因子: --
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发表时间: 1993-12-01
影响因子: 1.9
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