Identification of factors related to the enhancement of image-quality for subjective image-quality assessment model based on psychological measurement
Identification of factors related to the enhancement of image-quality for subjective image-quality assessment model based on psychological measurement
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基于心理测量的主观图像质量评估模型图像质量增强相关因素识别
DOI：
10.1109/hsi.2011.5937362
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
N. Nagata
中科院分区：
文献类型：
--
作者：
Eriko Aiba;K. Numata;Takashi X. Fujisawa;N. Nagata
本研究的目的是找出影响影像品质的物理因素，以全面提升人类对影像品质的主观评价。近年来，数码相机已经变得非常流行，因为它们能够以非常高保真度记录图像并且价格实惠。然而，在人的主观图像质量评估中，人们并不总是认为具有高保真度的图像具有高质量。本研究首先以心理学实验为基础，利用结合方法，发展出一个考虑人类感性的主观影像品质评估模式。我们特别关注在不依赖于场景的情况下识别物理因素。该实验的结果表明，“亮度”和“对比度”可能有助于增强图像质量评估，而不管所使用的场景类型。也有人认为，人类的记忆，其中个人喜欢的颜色被保留，也发挥了重要作用，在主观图像质量评估。
The purpose of this study is to identify the physical factors affecting image-quality for a comprehensive enhancement in subjective image-quality assessment by human being. In recent years, digital cameras have become extremely popular because they enable image recording with very high fidelity and are affordably priced. However, in subjective image-quality assessment by human, one does not always consider that images with high fidelity are of high quality. In this study, a psychological experiment was performed as the first step to develop a subjective image-quality assessment model that considers kansei of human being by using conjoint method. We particularly focused on the identification of physical factors without depending on a scene. The results of this experiment showed that “luminance” and “contrast” may contribute to an enhancement in the image-quality assessment, regardless of the type of scene used. It was also suggested that human memory, in which the colors preferred by the individual are retained, also plays a major role in a subjective image-quality assessment.