人工视觉的心理物理学：III. 随机渲染、光幻视图像与感知
Psychophysics of prosthetic vision: III. stochastic rendering, the phosphene image, and perception.
作者信息
Hallum Luke E, Cloherty Shaun L, Taubman David S, Suaning Gregg J, Lovell Nigel H
机构信息
Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
出版信息
Conf Proc IEEE Eng Med Biol Soc. 2006;2006:1169-72. doi: 10.1109/IEMBS.2006.259956.
For pt.I see ibid., p.Z004024-7. For pt.II see ibid., p.Z004558-61. This paper examines the rendering of luminous spots ("phosphenes") in the visual field, and their stochastic positioning as a means of anti-aliasing the resulting spotty image ("phosphene image"). We derive an equation concerning the correlations of pairs of phosphenes comprising the phosphene image, and show the relationship to the statistics governing the stochastic positioning. We present some examples where stochastic rendering assists the veridical perception of textures, and argue for its superiority as cf. ordered rendering. Our preliminary results suggest that it may be perceptually effective to manufacture disordered arrays of stimulating electrodes for intraocular implantation.
第一部分见同出处，第Z004024 - 7页。第二部分见同出处，第Z004558 - 61页。本文研究了视野中亮点（“光幻视”）的呈现，以及它们的随机定位，作为对所得斑点状图像（“光幻视图像”）进行抗锯齿处理的一种手段。我们推导了一个关于构成光幻视图像的光幻视对之间相关性的方程，并展示了它与控制随机定位的统计数据的关系。我们给出了一些随机渲染有助于对纹理进行逼真感知的例子，并论证了其相对于有序渲染的优越性。我们的初步结果表明，制造用于眼内植入的无序刺激电极阵列在感知上可能是有效的。
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