Blake A, Bülthoff H
Department of Engineering Science, University of Oxford, U.K.
Philos Trans R Soc Lond B Biol Sci. 1991 Feb 28;331(1260):237-52. doi: 10.1098/rstb.1991.0012.
Images of artificial and natural scenes typically contain many 'specularities' generated by mirror-like reflection from glossy surfaces. Until fairly recently computational models of visual processes have tended to regard specularities as obscuring underlying scene structure. Mathematical modelling shows that, on the contrary, they are rich in local geometric information. Recent psychophysical findings support the notion that the brain can apply that information. Our results concern the inference of 3D structure from 2D shaded images of glossy surfaces. Stereoscopically viewed highlights or 'specularities' are found to serve as cues for 3D local surface-geometry.
人工场景和自然场景的图像通常包含许多由光滑表面的镜面反射产生的“镜面反射光”。直到最近，视觉过程的计算模型往往将镜面反射光视为掩盖底层场景结构的因素。数学建模表明，恰恰相反，它们富含局部几何信息。最近的心理物理学研究结果支持大脑能够运用该信息的观点。我们的研究结果涉及从光滑表面的二维阴影图像推断三维结构。人们发现，通过立体视觉观察到的高光或“镜面反射光”可作为三维局部表面几何形状的线索。
