Iwasaki T, Tawara A
Department of Ophthalmology, University of Occupational and Environmental Health, Japan. 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan.
Nippon Ganka Gakkai Zasshi. 2001 Feb;105(2):119-24.
We investigated experimentally the relationship between the apparent size of stereoscopic images with disparity and the accommodative function.
The judgement of the apparent stereoscopic image size used the subject reply. The size of the forward image, which was produced by crossed visual lines with binocular disparity and by a time-sharing type stereoscopic three-dimensional display using liquid crystal shutter glasses, was compared with the size of the plane image. The size of the backward image produced by uncrossed visual lines was also compared with the size of the plane image. Sixteen normal volunteers were requested to subjectively compare each image with the original plane image on the display screen in relation to its size. Accommodation was measured using an infrared optometer to record the step responses (from far to near, and near to far). The subjects were divided into two groups, a fast response group and slow response group.
It was found that the forward image was smaller than the plane image and the backward image was larger than the plane image, and this tendency was remarkable in the fast response group.
From these results, it appears that the state of accommodation affects the perceived size of stereoscopic images with disparity.
我们通过实验研究了具有视差的立体图像的表观大小与调节功能之间的关系。
立体图像表观大小的判断采用受试者回答的方式。将由双眼视差的交叉视线以及使用液晶快门眼镜的分时型立体三维显示器产生的前方图像的大小与平面图像的大小进行比较。还将由不交叉视线产生的后方图像的大小与平面图像的大小进行比较。要求16名正常志愿者根据大小主观地将每个图像与显示屏上的原始平面图像进行比较。使用红外验光仪测量调节，以记录阶跃响应（从远到近，以及从近到远）。受试者被分为两组，快速响应组和慢速响应组。
发现前方图像小于平面图像，后方图像大于平面图像，并且这种趋势在快速响应组中尤为明显。
从这些结果来看，调节状态似乎会影响具有视差的立体图像的感知大小。
