scholarly journals Comparison of the LoRa Image Transmission Efficiency Based on Different Encoding Methods

2020 ◽  
Vol 10 (1) ◽  
pp. 1-4
Author(s):  
Ching-Chuan Wei ◽  
◽  
Pei-Yi Su ◽  
Shu-Ting Chen ◽  
◽  
...  
Keyword(s):  
Image Transmission ◽  
Transmission Efficiency

The Optimization Scheme of Image Transmission on Remote Desktop Monitoring System

2014 ◽  
Vol 644-650 ◽  
pp. 2489-2492
Author(s):  
Xiao Hu Yin ◽  
Xin Ru Wang
Keyword(s):  
Operating System ◽  
Control System ◽  
Remote Control ◽  
Image Transmission ◽  
Transmission Efficiency ◽  
Main Function ◽  
Optimization Scheme ◽  
Remote Control System ◽  
Function Modules ◽  
Android Operating System

The remote control system platform and the main function modules are studied and analyzed based on Android operating system. The problem of image transmission of remote control on Android equipment is solved by means of the analysis and comparison of several methods of screenshots and image compression, such as ImageIO compression and JPEGEncoder compression. Finally, we got the conclusion that the transmission efficiency can be increased by the screenshots with robot class and JPEGEncoder compression.

scholarly journals Secure and Efficient Image Transmission Scheme for Smart Cities Using Sparse Signal Transformation and Parallel Compressive Sensing

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Hui Wang ◽  
Yong Wu ◽  
Huantian Xie
Keyword(s):  
Compressive Sensing ◽  
Smart Cities ◽  
Image Transmission ◽  
Transmission Efficiency ◽  
Sparse Signal ◽  
Transmission Scheme ◽  
Signal Transformation ◽  
Smart Healthcare ◽  
Wide Range ◽  
And Diffusion

With the evolution of smart cities, images are used in a wide range of services such as smart healthcare and surveillance. How to ensure that images are transmitted and shared securely is of paramount importance for smart cities. To this end, a secure and efficient scheme for image transmission is proposed in this paper, which uses sparse signal transformation (SST) and parallel compressive sensing (CS). The primary employed techniques are sparse signal transformation (SST), parallel CS, and diffusion-permutation operation. The compression performance is achieved by parallel CS, whereas the encryption performance is derived from SST, parallel CS, and diffusion-permutation procedure. SST is exploited to change energy information before CS sampling and incorporated into diffusion-permutation framework, which not only balances the security and the efficiency of the algorithm, but also improves the transmission efficiency of the cipher image. We introduce chaotic system to generate the measurement matrix, SST matrix, and diffusion matrix to improve security. Furthermore, numerical simulation results and theoretical analyses confirm the security performances and effectiveness of the proposed scheme.

scholarly journals Image Parallel Encryption Technology Based on Sequence Generator and Chaotic Measurement Matrix

Entropy ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 76 ◽  
Author(s):  
Jiayin Yu ◽  
Shiyu Guo ◽  
Xiaomeng Song ◽  
Yaqin Xie ◽  
Erfu Wang
Keyword(s):  
Compressed Sensing ◽  
Circuit Simulation ◽  
Sampling Rate ◽  
Image Transmission ◽  
Transmission Efficiency ◽  
Data Sampling ◽  
Measurement Matrix ◽  
Chaotic Cryptography ◽  
Parallel Mode ◽  
Sequence Generator

In this paper, a new image encryption transmission algorithm based on the parallel mode is proposed. This algorithm aims to improve information transmission efficiency and security based on existing hardware conditions. To improve efficiency, this paper adopts the method of parallel compressed sensing to realize image transmission. Compressed sensing can perform data sampling and compression at a rate much lower than the Nyquist sampling rate. To enhance security, this algorithm combines a sequence signal generator with chaotic cryptography. The initial sensitivity of chaos, used in a measurement matrix, makes it possible to improve the security of an encryption algorithm. The cryptographic characteristics of chaotic signals can be fully utilized by the flexible digital logic circuit. Simulation experiments and analyses show that the algorithm achieves the goal of improving transmission efficiency and has the capacity to resist illegal attacks.

Digital image acquisition, processing, and analysis in a polymer microscopy laboratory

1994 ◽  
Vol 52 ◽  
pp. 454-455
Author(s):  
Vinod K. Berry ◽  
Xiao Zhang
Keyword(s):  
United States ◽  
Image Analysis ◽  
Digital Image ◽  
Image Acquisition ◽  
Image Transmission ◽  
The United States ◽  
Quantitative Image Analysis ◽  
Quantitative Image

In recent years it became apparent that we needed to improve productivity and efficiency in the Microscopy Laboratories in GE Plastics. It was realized that digital image acquisition, archiving, processing, analysis, and transmission over a network would be the best way to achieve this goal. Also, the capabilities of quantitative image analysis, image transmission etc. available with this approach would help us to increase our efficiency. Although the advantages of digital image acquisition, processing, archiving, etc. have been described and are being practiced in many SEM, laboratories, they have not been generally applied in microscopy laboratories (TEM, Optical, SEM and others) and impact on increased productivity has not been yet exploited as well.In order to attain our objective we have acquired a SEMICAPS imaging workstation for each of the GE Plastic sites in the United States. We have integrated the workstation with the microscopes and their peripherals as shown in Figure 1.

Progressive image transmission by content driven Laplacian pyramid encoding

1992 ◽  
Vol 139 (5) ◽  
pp. 495 ◽  
Author(s):  
Q. Mongatti ◽  
L. Alparone ◽  
G. Benelli ◽  
S. Baronti ◽  
F. Lotti ◽  
...  
Keyword(s):  
Image Transmission ◽  
Laplacian Pyramid ◽  
Progressive Image Transmission

Improving the efficiency of oilfield electric power distribution

2019 ◽  
pp. 79-87
Author(s):  
Yu. F. Yu. F. Romaniuk ◽  
О. V. Solomchak ◽  
М. V. Hlozhyk
Keyword(s):  
Power Distribution ◽  
Reactive Power ◽  
Power Transmission ◽  
Transmission Efficiency ◽  
Active Power ◽  
Oil Field ◽  
Total Power ◽  
Simultaneous Increase ◽  
Active Load ◽  
Step Down

The issues of increasing the efficiency of electricity transmission to consumers with different nature of their load are considered. The dependence of the efficiency of the electric network of the oil field, consisting of a power line and a step-down transformer, on the total load power at various ratios between the active and reactive components of the power is analyzed, and the conditions under which the maximum transmission efficiency can be ensured are determined. It is shown by examples that the power transmission efficiency depends not only on the active load, but also largely on its reactive load. In the presence of a constant reactive load and an increase in active load, the total power increases and the power transmission efficiency decreases. In the low-load mode, the schedule for changing the power transmission efficiency approaches a parabolic form, since the influence of the active load on the amount of active power loss decreases, and their value will mainly depend on reactive load, which remains unchanged. The efficiency reaches its maximum value provided that the active and reactive components of the power are equal. In the case of a different ratio between them, the efficiency decreases. With a simultaneous increase in active and reactive loads and a constant value of the power factor, the power transmission efficiency is significantly reduced due to an increase in losses. With a constant active load and an increase in reactive load, efficiency of power transmission decreases, since with an increase in reactive load, losses of active power increase, while the active power remains unchanged. The second condition, under which the line efficiency will be maximum, is full compensation of reactive power.  Therefore, in order to increase the efficiency of power transmission, it is necessary to compensate for the reactive load, which can reduce the loss of electricity and the cost of its payment and improve the quality of electricity. Other methods are also proposed to increase the efficiency of power transmission by regulating the voltage level in the power center, reducing the equivalent resistance of the line wires, optimizing the loading of the transformers of the step-down substations and ensuring the economic modes of their operation.

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