We work on a Bayesian approach to the estimation of the specular component of a color image, based on the Dichromatic Reflection Model (DRM). The separation of diffuse and specular components is important for color image segmentation, to allow the segmentation algorithms to work on the best estimation of the reflectance of the scene. In this work we postulate a prior and likelihood energies tha...

Diffuse reflections have received increasing attention in architectural acoustics over the past quarter century. The term diffuse refers to non-specular directions. This paper identifies three mechanisms that cause diffuse reflections. Practitioners have found that changing specular reflections into diffuse reflections can reduce noise and echoes both indoors and outdoors. Developers of acousti...

The infiltration by atomic layer deposition of three-dimensional opal structures has been investigated as a means of fabricating photonic crystal phosphors. ZnS:Mn infiltrated and inverse opals have been demonstrated with filling fractions >95%. Characterization of these structures by scanning electron microscopy, specular reflectance, and photoluminescence is reported. Specular reflectance mea...

This paper describes a method, which removes specularities from image sequences taken by a video camera in uniform straightly-line motion. Specular components, especially strong highlights, raise some problems in object recognition. Based on spatio-temporal image analysis, we are able to detect specular components and reconstruct original texture on the body as diffuse components. Analyzing the...

Introduction: Most algorithms in computer vision assume that the surfaces in a scene are perfect Lambertian. However, the presence of specular reflection is inevitable in most images. Although many methods have been proposed to separate specular pixels from an image, they have some critical limitations. Some can only deal with uniform coloured objects [1] and some need prior information about t...

Neutron specular reflectometry (SR) and off-specular scattering (OSS) are nondestructive techniques which, through deuteration, give a high contrast even among chemically identical species therefore highly suitable for investigations of soft-matter thin films. Through combination these two techniques, the former yielding density profile in direction normal to sample surface latter depth-resolve...

Since specular reflection often exists in the real captured images and causes deviation between recorded color intrinsic color, separation can bring advantages to multiple applications that require consistent object surface appearance. However, due of an is significantly influenced by illumination, existing researches still suffer from near-duplicate challenge, is, becomes unstable when illumin...

3. Component separation: We compute the pure diffuse image component and the specular image component. We can easily appreciate the two main directions in the data. The most clear is the one corresponding to the diuse line Ld which rises from the coordinate system origin. The second, less dened, appearing at the end of the diffuse elongation, is the specular direction identied by the specular l...

Specular reflections are exhibited by a wide range of materials whose reflectance can be described as a linear combination of specular and diffuse components [5]. There are several benefits to separating an image into the two components. By isolating the diffuse component (which is often well-described by the Lambertian model), powerful Lambertian-based tools for tracking, reconstruction and re...