Evolved transforms improve image compression
نویسندگان
چکیده
منابع مشابه
Evolved image compression transforms
State-of-the-art image compression and reconstruction schemes utilize wavelets. Quantization and thresholding are commonly used to achieve additional compression, but cause permanent, irreversible information loss. This paper describes an investigation into whether evolutionary computation (EC) may be used to optimize forward (compression-only) transforms capable of matching or exceeding the co...
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Previously reported research efforts demonstrated that a genetic algorithm can evolve coefficients describing transforms that outperform standard wavelets, by reducing the mean squared error (MSE) apparent in reconstructed signals under conditions subject to quantization. This paper describes new results that substantially improve the state-of-the-art in evolved transform performance. Matched f...
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The main objective of this paper is to focus on three techniques of image compression Burrows Wheeler Transform (BWT), Discrete Cosine Transform (DCT), and Discrete Wavelet Transform (DWT). Image processing systems can encode raw images with different degrees of precision, achieving varying levels of compression. Different encoders with different compression ratios can be built and used for dif...
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This chapter covers the basic aspects of lapped transforms and their applications to image compression. It is a subject that has been extensively studied mainly because lapped transforms are closely related to lter banks, wavelets, and time-frequency transformations. Some of these topics are also covered in other chapters in this book. In any case it is certainly impractical to reference all th...
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State-of-the-art image compression and reconstruction techniques utilize wavelets. Recently published research demonstrated that a genetic algorithm (GA) is capable of evolving non-wavelet transforms that consistently outperform wavelets when applied to a broad class of images under conditions subject to quantization error. This paper describes new results that build upon previous research by d...
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ژورنال
عنوان ژورنال: SPIE Newsroom
سال: 2009
ISSN: 1818-2259
DOI: 10.1117/2.1200901.1431