Results 21 to 30 of about 1,285 (216)
IET Image Processing, Volume 17, Issue 10, Page 2984-3001, 21 August 2023., 2023 In IoT sensors, which are used to record and send images, secure image transmission is of great importance. Therefore, we need to use encryption, watermarking and compression processes. Here, a new integrated method of lightweight encryption, watermarking and compression for the fast and secure transmission of images is proposed.
Hadi Nazari +2 more
wiley +1 more source
LL‐FMC: Low‐latency frame memory compression scheme with high reconstructed quality
Electronics Letters, Volume 59, Issue 14, July 2023., 2023 This study proposes a Huffman coding with a fixed codebook designed to considerably reduce the latency caused by arithmetic coding in lossless compression schemes. This study also proposes a novel lossy frame memory compression technique based on the Hadamard transform that does not require additional memory access using a lookup table.
Jin Shin, Jong Ho Lee, Hyun Kim
wiley +1 more source
The Journal of Engineering, Volume 2023, Issue 6, June 2023., 2023 Abstract Transmitting images over an Orthogonal Frequency Division Multiplexing Access (OFDMA) system poses a significant challenge. The process entails sending a substantial amount of data, which consumes a significant amount of bandwidth. Consequently, compressing the transmitted image becomes essential to reduce the required bandwidth.
Khaled A. M. Al Soufy +3 more
wiley +1 more source
Curvelet Transform Based Compression Algorithm for Low Resource Hyperspectral Image Sensors
Journal of Electrical and Computer Engineering, Volume 2023, Issue 1, 2023., 2023 The wavelet transform is widely used in the task of hyperspectral image compression (HSIC). They have achieved outstanding performance in the compression of a hyperspectral (HS) image, which has attracted great interest. However, transform based hyperspectral image compression algorithm (HSICA) has low‐coding gain than the other state of art HSIC ...
Shrish Bajpai +6 more
wiley +1 more source
The Journal of Engineering, Volume 2022, Issue 6, Page 656-664, June 2022., 2022 Abstract Orthogonal frequency division multiple access (OFDMA) has been attracting much attention in the recent generation of wireless communications to meet the required demands arising from the explosive growth of Internet, multimedia and broadband services. Currently, images transmission is one of the main parts of wireless communication.
Nagi H. Al‐Ashwal +3 more
wiley +1 more source
A blind contour‐aware quality model for sonar images
IET Image Processing, Volume 16, Issue 4, Page 1017-1026, March 2022., 2022 Abstract Since the penetration depth of visible light is limited in muddy and dark deep marine environment, sonar imaging, which is independent of natural light, has been attracting much attention in underwater detections. However, the visual quality of sonar image is inevitably damaged during the acquisition and the transmission in the sophisticated ...
Weiling Chen +3 more
wiley +1 more source
PERFORMANCE ANALYSIS OF IMAGE COMPRESSION BASED ON FAST FRACTIONAL WAVELET TRANSFORM COMBINED WITH SPIHT FOR MEDICAL IMAGES [PDF]
ICTACT Journal on Image and Video Processing, 2018 Fast Fractional Wavelet Transform (FFWT) is an orthogonal linear transform called as decomposed signals in terms of chirps transform. This transform is used for signal and image compression and is based on Eigen value decomposition.
K Ezhilarasan +2 more
doaj +1 more source
DWT‐SVD Based Watermarking for High‐Resolution Medical Holographic Images
Complexity, Volume 2022, Issue 1, 2022., 2022 Watermarking is one of the most common techniques used to protect data’s authenticity, integrity, and security. The obfuscation in the frequency domain used in the watermarking method makes the watermarking stronger than the obfuscation in the spatial domain.
Fahrettin Horasan +6 more
wiley +1 more source
Performance Enhancement of Bit‐Level XOR Compressed Image OFDM Transmission Systems
Mobile Information Systems, Volume 2022, Issue 1, 2022., 2022 The bit error rate (BER) formula of the M‐QAM system is derived under nonequally likely condition of the constellation points, from which improving the BER performance of the M‐QAM system by optimizing the probability distribution of constellation points is identified.
Linlin Xue +3 more
wiley +1 more source
Journal of Sensors, Volume 2022, Issue 1, 2022., 2022 In recent times, the medical image processing solves several clinical issues by inspecting the visual images, which are generated in the clinical health care units. The main objective of the research is to gain valuable information from the images for better clinical diagnosis.
S. Aruna Deepthi +3 more
wiley +1 more source