Results 61 to 70 of about 697,042 (219)
An Effective Computational Ghost Imaging Based on Noise Estimation and Elimination
IEEE Access, 2020 To improve the quality of ghost image, we propose an efficient computational ghost imaging method in this article. The primary idea is to estimate the noise value of the ghost image by analyzing and eliminating the source of the noise. The innovativeness
Xiaoxia Wang, Jiangtao Xi, Fengbao Yang
doaj +1 more source
Evaluation of peak-picking algorithms for protein mass spectrometry [PDF]
, 2011 Peak picking is an early key step in MS data analysis. We compare three commonly used approaches to peak picking and discuss their merits by means of statistical analysis. Methods investigated encompass signal-to-noise ratio, continuous wavelet transform,
A Savitzky +11 more
core +1 more source
Journal of Electrical Engineering and Computer SciencesX-ray imaging is a widely used technique for observing lung patients conditions. Compared to other radiographic methods, X-ray is more accessible, cost-effective, and commonly available in healthcare facilities. However, digital X-ray images often suffer
Marisha Pertiwi +3 more
doaj +1 more source
Zeros Removal with DCT Image Compression Technique
Journal of Kufa for Mathematics and Computer, 2011 The discrete cosine transform (DCT) is a method for converting a signal into plain frequency components. It is extensively used in image compression. In this paper a new technique is proposed, namely ZRDCT (Zeros Removal with DCT) which is based on a ...
Nushwan Yousif Baithoon
doaj +1 more source
UHD Journal of Science and Technology, 2022 With the tremendous growth of searchable visual media, the content-based medical image retrieval and computer-aided diagnosis systems have become popular in recent years to improve knowledge and provide facilities for radiologists.
Shakhawan H. Wady, Raghad Z. Yousif
doaj +1 more source
Figure of merit for direct-detection optical channels [PDF]
, 1992 The capacity and sensitivity of a direct-detection optical channel are calculated and compared to those of a white Gaussian noise channel. Unlike Gaussian channels in which the receiver performance can be characterized using the noise temperature, the ...
Chen, C.-C.
core +1 more source
PSNR Improvement Using Different Prediction Coding
Tikrit Journal of Engineering Sciences, 2015 Differential Pulse Code Modulation (DPCM) is one of the predictive coding techniques. The number of previous pixels employed in the estimate operation is referred to as the order of the predictor. Predictor using one pixel for estimation is called “first
Khamies Khalaf Hasan
doaj
Enhancement of Image Transmission Using Chaotic Interleaver over Wireless Sensor Network [PDF]
, 2016 The wireless sensor networks different from classic wired networks, WMSN differs from other scalar network mainly nature and size of data transmitted, memory resources, and power consumption in each node for processing and transmission.
Hadi, W. A. (Wa’il) +2 more
core
LSB TECHNIQUE FOR IMAGE AND TEXT HIDING USING THE RED AND GREEN CHANNELS [PDF]
Journal of Engineering Science and Technology, 2018 Recently, Information hiding has an important role to protect data via the Internet from malicious attack, Steganography - which is the art of hiding data- uses a cover file to hide data by utilizing different schemas to prevent it from being detected ...
SAWSAN M. NUSIR +4 more
doaj
A Fully Integrated 24-GHz Eight-Element Phased-Array Receiver in Silicon [PDF]
, 2004 This paper reports the first fully integrated 24-GHz eight-element phased-array receiver in a SiGe BiCMOS technology. The receiver utilizes a heterodyne topology and the signal combining is performed at an IF of 4.8 GHz. The phase-shifting with 4 bits of
Guan, Xiang +2 more
core