In recognizing objects in an outdoor scene, range and reflectance (or color) data provide complementary information. This paper presents the results of experiments in recognizing outdoor scenes containing roads. trees. and cars from the CMU Navlab (Navigation Laboratory) p n ~ ~ The recognition program uses range and reflectance data obtained by a scanning laser range hnder, as well as color da...

This chapter briefly accounts for the basic feature extraction techniques and the segmentation schemes used in the field of color texture segmentation and reviews some of the popular modern approaches for colortexture segmentation. Color and texture are widely accepted as being two key issues in image analysis. During the past decades numerous approaches for color-texture segmentation have been...

A new general-purpose color image segmentation editor (CISE) for the purpose of extracting a semantic object is designed, implemented and tested on a number of various natural scene images. Our editor integrates a deformable model and image statistics including intensity, color, gradient and texture. The editor starts with a coarse region segmentation which applies the Canny’s operator followed...

A novel structured light method is described. The projection patterns are automatically adapted to the characteristics of the scene as part of the acquisition process, thus maximizing performance and minimizing the number of projection patterns. Color is used for light plane labeling. This allows to increase the dimension of the code space, hence the noise margins, without increasing the number...

Recent developments in spectral imaging are pointing toward a future where the demands on color management will require a richer infrastructure than that which is currently offered. ICC color management includes a stage where all colors are transformed to and from XYZ-based colorspaces. This colorimetric bottleneck is acceptable within a metameric or Maxwellian approach to color reproduction, b...

In this paper we present two approaches to highlight removal in color images. The first approach is based on a global analysis of a single color image. Threedimensional color descriptors are transformed to a pair of two-dimensional descriptors. The second approach is based on a local analysis of three color images. The images are taken in analogy to photometric stereo tasks. For every surface p...

The color constancy is a procedure that measures the influence of different light sources on a digital image. The goal of the computational color constancy is to account for the effect of the illuminate.Many traditional methods such as Grey-world method, Max RGB and learning-based method were used to measure the color constancy of digital images affected by light source. All these methods have ...

Many theories of visual object perception assume the visual system initially extracts borders between objects and their background and then "fills in" color to the resulting object surfaces. We investigated the transformation of chromatic signals across the human ventral visual stream, with particular interest in distinguishing representations of object surface color from representations of chr...

In images, interreflections can change the color and the intensity that is reflected from the surfaces. An approach is presented that minimizes the interreflections in a color image and takes shadows into account. Using the HSI color space the color image is segmented into homogeneous regions. All segmented regions are examined for the occurrence of shadow and interreflections. The one-bounce m...

To what extent do observers' judgments of surface color with natural scenes depend on global image statistics? To address this question, a psychophysical experiment was performed in which images of natural scenes under two successive daylights were presented on a computer-controlled high-resolution color monitor. Observers reported whether there was a change in reflectance of a test surface in ...