DCT-based compression algorithms
Title: IMPLEMENTATION OF LOEFFLER ALGORITHM FOR LENGTH 2N IDCT
... 8x8 DCT and IDCT on different FPGA technologies using the modified Loeffler ...8-point DCT/IDCT implementations indicate operating frequencies of 50 MHz, 60 MHz, and 22 MHz for the investigated Xilinx, ...
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Implementation of DCT DWT SVD based watermarking algorithms for copyright protection
... watermarking algorithms was tested using thirteen Attacks with Matlab: Salt & papers noise, Gaussian noise, JPEG compression, rescaling, rotation, cropping, contrast adjustment, histogram equalization, ...
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Hybrid Image Compression Using DCT
... image compression includes a combination of Lossy and Lossless methods ...lossy compression method includes the Discrete Cosine Transform (DCT) algorithm whereas the lossless compression ...
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Title: A Survey on Medical Image Compression Using Hybrid Technique
... image compression is done by three transform method which are Discrete Cosine Transform(DCT), Discrete Wavelet Transform(DWT) & Hybrid Transform(DCT-DWT) ...concluded based on the results ...
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A Fast Median Filter Using Decision Based Switching Filter & DCT Compression
... vision based applications produce poor results when noise is present in ...uses DCT based compression to improve the speed of the proposed ...
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Hardware of watermarking based on DCT
... (DCT) compression technique is used for Watermarking of an ...for compression among all Algorithms because it is suitable for all types of ...balanced compression ratio for data ...
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Threshold Extension of Gallium Arsenide/Aluminum Gallium Arsenide Terahertz Detectors and Switching in Heterostructures
... image compression are JPEG image compression which DCT/IDCT [5] based image coding standard, Cellular Neural Networks [22], and fractal image compression [10, ...image ...
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Fast DCT Algorithms for EEG Data Compression in Embedded Systems
... Since EEG discovery by Berger et. al [1], many research activities have centred on extracting useful information about the brains conditions based on the characteristics of the signal. EEG signals are used in ...
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Filter Augmented JPEG Algorithms: A Critical Performance Study for Improving Bandwidth
... image compression standard for bandwidth ...JPEG Compression algorithms by combining Mean filtering, Median filtering, and Outlier detection algorithms and conventional JPEG DCT ...
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A Comparative Analysis of DCT, DWT & Hybrid (DCT DWT) Transform Techniques of Image Compression
... Abstract—Image compression is process to remove the redundant information from the image so that only essential information can be stored to reduce the storage size, transmission bandwidth and transmission ...
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Comparison of DCT and wavelet based image compression Techniques
... Image compression defines as reducing the amount of data required to represent digital ...image compression is very importance and ...image compression (1) lossless compression and (2) lossy ...
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Survey paper on image compression techniques
... image compression algorithms based on (a) Wavelet, (b) JPEG/DCT, (c) VQ, and (d) Fractal ...these algorithms for compressing grayscale images and colored ...rate compression like ...
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An Orthogonal Approximation of DCT and Reconfigurable Architecture for Image Compression
... video compression applications. Existing approximation algorithms of DCT are available for only small transform ...of DCT provides comparable or better image compression performance ...
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Wireless Multimedia Sensor Network for Image Compression: Objective & Performance Analysis
... image compression methods dedicated to transmission over Wireless Multimedia Sensor Networks (WMSNs) using directed diffusion protocol in order to decrease the energy consumption of sensors and thus to maintain a ...
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Scaled Discrete Cosine Transform (DCT) using AAN Algorithm on FPGA
... dimensional DCT on small input sizes eight x eight is used. A digital unit called DCT soft core developed to perform the Discrete Cosine Transform ...point DCT for the period of 64 clock cycles in ...
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Design and Implementation of Novel Video Compression Technique Using Raspberry Pi
... video compression is carried out using motion- compensated block-based Discrete Cosine Transform (DCT) in MPEG and ITU-T video coding ...the compression efficiency of the ...
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Image Compression Algorithms under JPEG with Lapped Orthogonal Transform and Discrete Cosine Transformation
... the compression of images where tolerable degradation is ...Image compression is minimizing the size in bytes of a graphics file without degrading the quality of the image to an unacceptable ...image ...
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Novel Image Compression using Modified DCT
... —Image compression is a widely addressed research area. Many compression standards are in ...high compression with quality ...data compression techniques are widely used. Discrete Cosine ...
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A Novel Video Encryption Technique for Real Time applications
... This methodology is based on statistical analysis of compressed MPEG video stream. The basic idea is scrambling of bytes. Scrambling allows unauthorized users to have an arbitrarily degraded view of current video. ...
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A STUDY OF WAVELET BASED IMAGE COMPRESSION ALGORITHMS
... avelet compression is also known as Discrete Wavelet Transforms (DWT). It treated the image as a signal or wave. The transform organizes the image information into a continuous wave, typically with many peaks and ...
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