In this paper, image retrieval method based on statistics and projection is presented. At first, images are transferred from the RGB color model to the HSI color model, then images are segmented into sub-images (or blocks) and extract the main hue and main intensity in these sub-images. Images’ main hue and main intensity are projected onto the horizontal and vertical directions, respectively, ...

The problem of inferring the light color for a scene is called Illuminant Estimation. This step forms the first task in many workflows in the larger task of discounting the effect of the color of the illuminant, which is called Color Constancy. Illuminant Estimation is typically used as a pre-processing step in many computer vision tasks. In this thesis, we tackle this problem for both RGB and ...

This paper reports our experiments for TRECVID 2009 tasks: high level feature extraction, search and contentbased copy detection. For the high level feature extraction task, we used the baseline features such as color moments, edge orientation histogram, local binary patterns and local features trained with SVM classifiers and nearest neighbor classifiers. For the search task, we used . Concern...

Color is a powerful fundamental cue that can be used at an early stage to detect objects in complex scene images. This paper presents an analysis of the performance of nine different chrominance spaces in the specific problem of automatically detecting and locating human faces in twodimensional still scene images. For each space, we use a skin color model based on the Mahalanobis metric to segm...

Image retrieval system as a reliable tool can help people in reaching efficient use of digital image accumulation; also finding efficient methods for the retrieval of images is important. Color and texture descriptors are two basic features in image retrieval. In this paper, an approach is employed which represents a composition of color moments and texture features to extract low-level feature...

Most of the existing color image watermarking schemes were designed to mark the image luminance component only, which have some disadvantages: (i) they are sensitive to color attacks because of ignoring the correlation between different color channels, (ii) they are always not robust to geometric distortions for neglecting the watermark desynchronization. It is a challenging work to design a ro...

We have compiled data for the globular cluster systems of 50 galaxies from the HST WFPC2 archive, of which 43 are type S0 or earlier. In this paper, we present the data set and derive the V − I color distributions. We derive the first four moments of the color distributions, as well as a measure for their non–unimodality. The number of globular clusters in each galaxy ranges from 18 (in NGC 277...

This paper describes the design, implementation and evaluation of Parallel Multimedia Information Retrieval systems. PAMIR is implemented on a network of Pentium PC based workstations to exploit the I/O and computation parallelism in both insertion and processing phase of complex similarity queries in multimedia Information retrieval. The system is capable to index and query multimedia objects ...

A method for reduction of color space dimensionality by moment-preserving thresholding and its application in edge detection for color images is proposed. An input color image is partitioned into n x n non-overlapping blocks. A moment-preserving thresholding technique is then applied individually to each color plane of each image block. Two sets of (R, G, B) tristimulus values are obtained from...