Analysis of Arithmetic and Huffman Compression Techniques by Using DWT-DCT

Kumar, Gaurav; Kumar, Rajeev

doi:10.5815/ijigsp.2021.04.05

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…Analysis and systematization of scientific sources on research, observation, questionnaires, objective and subjective methods of psychological diagnosis, statistical processing of results [15][16][17].…”

Section: Methodsmentioning

confidence: 99%

Psychological Aspects of Official Activities of Police Officers of Cargo and Mobile Objects Security Orders

Ostapovich¹,

Barko²,

Protsyk³

2021

Proceedings of the International Conference on Social Science, Psychology and Legal Regulation (SPL 2021)

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The article is devoted to the generalization of psychological aspects of the service activities of police officers of cargo and mobile objects of the security police as one of the components of the National Police of Ukraine. On the basis of a large-scale experimental study with the participation of 280 police officers, psychological and some sociolegal aspects of police activities, individual characteristics of specialists in this field were identified. The article proves that the profession of police officer of cargo and mobile objects security orders makes high demands on the psychophysiological and individual psychological qualities of employees; he needs to have advanced cognitive processes. The profession makes certain demands on the individual psychological characteristics of police officers (level of intellectual abilities, degree of creativity and formation of thinking operations, in particular, induction and deduction, comparison, generalization, separation of the main. A police officer must be able to influence the opponent, be a good communicator, be responsible for their actions and accurately evaluate the actions of others, if necessary to convince citizens of their rightness, to be proactive, active, but legible in contacts. Important for the successful performance of official functions of the security police officer are also managerial, organizational and special abilities. The article also presents a list of individual characteristics that do not contribute to the success of official activities in the position of police officer of cargo and mobile objects security orders, the main of which are: insufficient strength and lability of nervous processes, low level of cognitive development processes (perception, attention, memory, thinking, insufficient level of intelligence; accentuation of character and temperament; negative character traits; low level of communication skills, etc.

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Section: Methodsmentioning

confidence: 99%

Psychological Aspects of Official Activities of Police Officers of Cargo and Mobile Objects Security Orders

Ostapovich¹,

Barko²,

Protsyk³

2021

Proceedings of the International Conference on Social Science, Psychology and Legal Regulation (SPL 2021)

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“…In Reference [19], both arithmetic compression and Huffman compression, based on a hybrid combination of DWT-DCT methods, are presented. Simulation results show that arithmetic coding gets a higher compression ratio than Huffman coding, but lower PSNR values.…”

Section: Related Workmentioning

confidence: 99%

Image Transmission in WMSN Based on Residue Number System

Sachenko,

Yatskiv,

Sieck

et al. 2024

IJC

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The paper considers the speedy images processing in Wireless Multimedia Sensor Networks using the Residue Number System (RNS) and the method of arithmetic coding. The proposed method has a two-stage frame: firstly, the RNS transformation is run to divide the data and obtain residues, and secondly, the parallel compression of the resulting residues is provided by employing the arithmetic coding. Within the implementation of binary code transformation in RNS one, the hardware complexity for block conversion is evaluated for various modulo sets and the results are illustrated. Authors employed the arithmetic coding for residue compression to provide the optimum of compression degree in terms of entropy assessment as well as a reduction in image redundancy without loss of quality. A research algorithm is proposed to run an experiment presented by the residues carried out on test images and other types of files. As a result, an increase in the speed of image compression of about 2.5 times is achieved by processing the small data as well as providing the parallel operation of the compression residue units by RNS selected moduli. Finally, the existing and proposed methods are compared and it has been shown the last one provides a better compression ratio of more than twice.

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“…Security analyses are presented in terms of robustness, imperceptibility, and embedding capacity. Reference [6] demonstrates the LSB embedding method based on DCT coefficients of the carrier image. DCT coefficients of the carrier are calculated.…”

Section: Literature Reviewmentioning

confidence: 99%

An Efficient Image Steganography Scheme Using Bit-plane Slicing with Elliptic Curve Cryptography and Wavelet Transform

Ganavi¹,

Prabhudeva²,

P³

2022

IJCNIS

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Information security is indispensable in the transmission of multimedia data. While accumulating and distributing such multimedia data, the access of data from a third person is the real security challenging issue. Information hiding plays an important role. Scramble the data before hiding it in carrier media gives enhanced security level for the data. In this paper, bit plane slicing is used to represent an input image with eight planes at bit-level instead of pixel-level. As the least significant bit contains noisy information, only the most significant bit plane can be used to represent an image. At the first level, an input image is processed through the spatial domain. Transform domain techniques are used to process the image at the middle level. Elliptic curve cryptography is used to scramble and descramble the MSB plane image. A logistic chaotic sequence of the input image is added to the most significant bit plane image to generate the final scrambled image. The discrete wavelet transform is used to embed the scrambled image in its high-frequency sub-bands. At the last level, a least significant bit technique, a spatial domain is used to embed the scrambled image in the carrier image. Message integrity is also verified by finding the hash of an input image. The performance of the proposed method is evaluated through various security measures. It gives good results as number of pixel change rate is closer to 100% and unified average changing intensity is 33.46.

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Analysis of Arithmetic and Huffman Compression Techniques by Using DWT-DCT

Cited by 5 publications

References 27 publications

Psychological Aspects of Official Activities of Police Officers of Cargo and Mobile Objects Security Orders

Psychological Aspects of Official Activities of Police Officers of Cargo and Mobile Objects Security Orders

Image Transmission in WMSN Based on Residue Number System

An Efficient Image Steganography Scheme Using Bit-plane Slicing with Elliptic Curve Cryptography and Wavelet Transform

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