Color constancy: a method for recovering surface spectral reflectance.

نویسندگان

  • L T Maloney
  • B A Wandell
چکیده

Human and machine visual sensing is enhanced when surface properties of objects in scenes, including color, can be reliably estimated despite changes in the ambient lighting conditions. We describe a computational method for estimating surface spectral reflectance when the spectral power distribution of the ambient light is not known.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Color constancy. II. Results for two-stage linear recovery of spectral descriptions for lights and surfaces.

Our analysis of color constancy in a companion paper [J. Opt. Soc. Am A 10, 2148 (1993)] provided an algorithm that lets one test how well linear color constancy schemes work. Here we present the results of applying the algorithm to a large parametric class of color constancy problems involving bilinear models that relate photoreceptoral spectral sensitivities, surface reflectance functions, an...

متن کامل

The Use of a Selective Database Technique in Order to Recover the Spectra of a Series of Acrylic Paints by the Principle Component Analysis

A procedure for an efficient recovering of reflectance spectra of Acrylic paint samples from CIE tristimulus color values is described. By fixing a certain criteria based on color difference value, the proposed technique preliminarily selects a series of suitable samples from a main dataset containing the reflectance values of a series of different Acrylic paint samples, based on the color ...

متن کامل

Maximum Entropy Spectral Models for Color Constancy

Earlier work showed that maximum entropy models can be used to represent surface reflectance spectra of Munsell patches. Here, we introduce a new approach to color constancy which is based upon that work. To our knowledge, all color constancy approaches employing spectral models use linear basis function representations for surface and illuminant spectra. This means that a set of basis function...

متن کامل

Natural Color Reproduction of an Image with Highlights by Vector Transformation and Non-linear Mapping

©2001, IS&T—The Society for Imaging Science and Technology ject remains invariant with changes in the illumination. The mechanisms that provide color constancy must decompose the reflected light and discount the spectral properties of the illumination in order to establish the colors of the objects in terms of their surface reflectance functions.3–5 Most previous research on the reproduction of...

متن کامل

A Study of Relationship Between Color Inconstancy Level and CIELAB Color Coordinates

In commercial point of view, it is of great interest to find colors with high color constancy level. Color constancy as a relatively property of object’s appearance could be affected by different factors. In this article, the color inconstancy index of CMCCON02 and CIELAB color coordinate of 1269 samples of Munsell at CIELchº color system to study any correlations, was calculated. The correspon...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Journal of the Optical Society of America. A, Optics and image science

دوره 3 1  شماره 

صفحات  -

تاریخ انتشار 1986