Exploiting image indexing techniques in DCT domain
نویسندگان
چکیده
منابع مشابه
Exploiting Image Indexing Techniques in DCT Domain
This paper is concerned with the indexing and retrieval of images based on features extracted directly from the JPEG discrete cosine transform (DCT) domain. We examine possible ways of manipulatingDCT coe$cients by standard image analysis approaches to describe image shape, texture, and color. Through the Mandala transformation, our approach groups a subset of DCT coe$cients to form ten blocks....
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Considering the fact that the majority of images stored in computers, such as those from the Internet, are in JPEG compressed format, it would be highly desirable to have the content-based image indexing and retrieval conducted directly in compressed domain. In this paper, we present an algorithm to index images directly in the DCT domain for all JPEG compressed images. Following that, an empir...
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In this paper, we present a new and effective image indexing technique that extracts features directly from DCT domain. Our proposed approach is an object-based image indexing. For each block of size 8*8 in DCT domain a feature vector is extracted. Then, feature vectors of all blocks of image using a kmeans algorithm is clustered into groups. Each cluster represents a special object of the imag...
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ژورنال
عنوان ژورنال: Pattern Recognition
سال: 2001
ISSN: 0031-3203
DOI: 10.1016/s0031-3203(00)00111-4