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首页> 外文期刊>International Journal of Computer Vision >DETECTION OF DIFFUSE AND SPECULAR INTERFACE REFLECTIONS AND INTER-REFLECTIONS BY COLOR IMAGE SEGMENTATION
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DETECTION OF DIFFUSE AND SPECULAR INTERFACE REFLECTIONS AND INTER-REFLECTIONS BY COLOR IMAGE SEGMENTATION

机译：通过彩色图像分段检测扩散和特殊的界面反射和反射

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摘要

We present a computational model and algorithm for detecting diffuse and specular interface reflections and some inter-reflections. Our color reflection model is based on the dichromatic model for dielectric materials and on a color space, called S space, formed with three orthogonal basis functions. We transform color pixels measured in RGB into the S space and analyze color variations on objects in terms of brightness, hue and saturation which are defined in the S space. When transforming the original RGB data into the S space, we discount the scene illumination color that is estimated using a white reference plate as an active probe. As a result, the color image appears as if the scene illumination is white. Under the whitened illumination, the interface reflection clusters in the S space are all aligned with the brightness direction. The brightness, hue and saturation values exhibit a more direct correspondence to body colors and to diffuse and specular interface reflections, shading, shadows and interreflections than the RGB coordinates. We exploit these relationships to segment the color image, and to separate specular and diffuse interface reflections and some inter-reflections from body reflections. The proposed algorithm is efficacious for uniformly colored dielectric surfaces under singly colored scene illumination. Experimental results conform to our model and algorithm within the limitations discussed. [References: 54]
机译：我们提出了一种用于检测漫反射和镜面反射以及一些相互反射的计算模型和算法。我们的颜色反射模型基于介电材料的双色模型，并基于由三个正交基函数形成的称为S空间的颜色空间。我们将以RGB测量的彩色像素转换为S空间，并根据S空间中定义的亮度，色相和饱和度分析对象的颜色变化。当将原始RGB数据转换为S空间时，我们将使用白色参考板作为有源探头估算的场景照明颜色打折。结果，彩色图像看起来好像场景照明是白色的。在白光照射下，S空间中的界面反射簇都与亮度方向对齐。与RGB坐标相比，亮度，色相和饱和度值与人体颜色以及与漫反射和镜面反射，阴影，阴影和相互反射更直接地对应。我们利用这些关系来分割彩色图像，并从镜体反射中分离出镜面反射和漫反射界面反射以及一些相互反射。所提出的算法对于单色场景照明下均匀着色的介电表面是有效的。在讨论的限制范围内，实验结果符合我们的模型和算法。 [参考：54]

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