Psychovisual Assessment of Tone-Mapping Operators for Global Appearance and Colour Reproduction
Psychovisual Assessment of Tone-Mapping Operators for Global Appearance and Colour Reproduction
复制标题
色调映射算子的整体外观和色彩再现的心理视觉评估
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
R. Labayrade
中科院分区：
文献类型：
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作者：
C. Villa;R. Labayrade
为了确定人们的偏好，心理视觉测试在虚拟环境中进行。用于心理视觉测试的场景图像是原生的高动态范围（HDR）图像。然而，为了允许低动态范围（LDR）显示设备投影HDR图片，它们的动态范围必须用色调映射算子（TMO）来压缩。因此，在进行测试之前，根据应用的目的，需要选择最合适的TMO，从感知上讲，以忠实地呈现图像。在本文中，提出了三种不同的实验方案，用于评估应用程序的显示设备用于心理视觉测试，并选择最合适的TMO从六个候选人。另一个目标是给出该设备可以解决的应用的初步想法。进行了两个主观实验，并在本文中。第一个分为两个步骤。三个不同的协议（两个协议在第一次测试和第三次测试）的结果进行比较，用于识别的首选TMO为五个不同的场景和LDR图像缺陷观察员注意到的文件中突出显示。
To identify people’s preference, psychovisual tests are carried out in virtual environment. Images of scenes used for psychovisual tests are natively High Dynamic Range (HDR) images. However, in order to allow a Low Dynamic Range (LDR) display device to project HDR pictures, their dynamic range must be compressed with a tone-mapping operator (TMO). Thus, before tests are carried out, selection of the most suitable TMO, perceptually speaking, is required to present images faithfully, depending on the aim of the application. In this paper, three different experimental protocols are proposed for assessing the applications of a display device used for psychovisual tests and selecting the most suitable TMO from six candidates. An additional goal is to give a first idea of the applications that can be addressed by this device. Two subjective experiments were conducted and are presented in the paper. The first one is divided in two steps. The results of three different protocols (two protocols in the first test and the third in the second test) for the identification of the preferred TMO for five different scenes are compared and LDR image defects noticed by observers are highlighted in the paper.