Results 1 to 10 of about 1,421 (152)

Lossy Infrared Image Compression Based on Wavelet Coefficient Probability Modeling and Run-Length-Enhanced Huffman Coding [PDF]

open access: yesSensors
Infrared line-scanning images have high redundancy and large file sizes. In JPEG2000 compression, the MQ arithmetic encoder’s complexity slows down processing. Huffman coding can achieve O(1) complexity based on a code table, but its integer-bit encoding
Yaohua Zhu   +5 more
doaj   +2 more sources

A Data Compression Method for Wellbore Stability Monitoring Based on Deep Autoencoder [PDF]

open access: yesSensors
The compression method for wellbore trajectory data is crucial for monitoring wellbore stability. However, classical methods like methods based on Huffman coding, compressed sensing, and Differential Pulse Code Modulation (DPCM) suffer from low real-time
Shan Song   +3 more
doaj   +2 more sources

Simultaneous storage of medical images in the spatial and frequency domain: A comparative study [PDF]

open access: yesBioMedical Engineering OnLine, 2004
Background Digital watermarking is a technique of hiding specific identification data for copyright authentication. This technique is adapted here for interleaving patient information with medical images, to reduce storage and transmission overheads ...
Acharya U Rajendra   +3 more
doaj   +2 more sources

Аdaptive combined image coding with prediction of arithmetic code volume

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2021
The problem of increasing the efficiency of coding of halftone images in the space of bit planes of differences in pixel values obtained using differential coding (DPCM – Differential pulse-code modulation) is considered.
B J.S Sadiq   +2 more
doaj   +1 more source

Lossless Compression of Medical Images Using a Dual Level DPCM with Context Adaptive Switching Neural Network Predictor [PDF]

open access: yesInternational Journal of Computational Intelligence Systems, 2013
A novel dual level differential pulse code modulation (DL-DPCM) is proposed for lossless compression of medical images. The DL-DPCM consists of a linear DPCM followed by a nonlinear DPCM namely, context adaptive switching neural network predictor (CAS ...
Emjee Puthooran, R S Anand, S Mukherjee
doaj   +1 more source

Analysis of the Measurement Matrix in Directional Predictive Coding for Compressive Sensing of Medical Images

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2022
Compressive sensing of 2D signals involves three fundamental steps: sparse representation, linear measurement matrix, and recovery of the signal. This paper focuses on analyzing the efficiency of various measurement matrices for compressive sensing of ...
Hepzibah Christinal A   +4 more
doaj   +1 more source

Color Image Compression Using DPCM with DCT, DWT and Quadtree Coding Scheme [PDF]

open access: yesEngineering and Technology Journal, 2016
This paper is concerned with the design and implementation of a compression method for color image. This method based on Differential Pulse Code Modulation (DPCM), Discrete Cosine Transform (DCT) , Discrete Wavelet Transform (DWT) and Quadtree Coding ...
Ashwaq T. Hashim, Suhad A. Ali
doaj   +1 more source

IMAGE WAVELETE COMPRESSION USING SHIFT CODING AND BITMAP SLICING [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2008
:The technique of image compression means reduce the size of image data in a way that can be reconstructed to its necessary components. This technique convert image data to an effective code, then this code can be decoded to reconstruct the approximate ...
Samyia S. Lazar   +2 more
doaj   +1 more source

Model for Estimation of Bounds in Digital Coding of Seabed Images [PDF]

open access: yes, 2015
This paper proposes the novel model for estimation of bounds in digital coding of images. Entropy coding of images is exploited to measure the useful information content of the data.
Samcovic, A.
core   +2 more sources

DCT/DPCM Hybrid Coding for Interlaced Image Compression

open access: yesTikrit Journal of Engineering Sciences, 2009
By the nature of images, picture elements in local regions are highly correlated with one another. In such cases, image compression techniques are introduced to reduce the amount of data is needed to represent the same information, either exactly or ...
Saied O. Abdul-Amir   +1 more
doaj   +1 more source

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