An orthogonal 16-point approximate DCT for image and video compression
نویسندگان
چکیده
منابع مشابه
An Orthogonal 16-point Approximate DCT for Image and Video Compression
A low-complexity orthogonal multiplierless approximation for the 16-point discrete cosine transform (DCT) was introduced. The proposed method was designed to possess a very low computational cost. A fast algorithm based on matrix factorization was proposed requiring only 60 additions. The proposed architecture outperforms classical and state-of-the-art algorithms when assessed as a tool for ima...
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The discrete cosine transform (DCT) is the key step in many image and video coding standards. The 8-point DCT is an important special case, possessing several low-complexity approximations widely investigated. However, 16-point DCT transform has energy compaction advantages. In this sense, this paper presents a new 16-point DCT approximation with null multiplicative complexity. The proposed tra...
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An orthogonal 16-point approximate discrete cosine transform (DCT) is introduced. The proposed transform requires neither multiplications nor bit-shifting operations. A fast algorithm based on matrix factorization is introduced, requiring only 44 additions—the lowest arithmetic cost in literature. To assess the introduced transform, computational complexity, similarity with the exact DCT, and c...
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Image processing became a big challenge in the multimedia usage for processing the images with low power and high efficiency. For processing images, DCT (Discrete cosine transforms) are utilized for compression because of its advantages over the energy consumption. In existing methods, they used Approximate DCT with fast algorithm and regular pipelining structure for reducing the design complex...
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ژورنال
عنوان ژورنال: Multidimensional Systems and Signal Processing
سال: 2014
ISSN: 0923-6082,1573-0824
DOI: 10.1007/s11045-014-0291-6