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A Review on Block Matching Motion Estimation and Automata Theory based Approaches for Fractal Coding
Fractal compression is the lossy compression technique in the field of gray/color image and video compression. It gives high compression ratio, better image quality with fast decoding time but improvement in encoding time ...
Data-Driven Symbol Defi nition for Color Shift Keying in Screen Camera Communications
(Universidad Nacional Tecnológica de Lima Sur, 2021)
Aiming to increase the data rate in screen camera communications, we intend to define symbols to be used in an M-ary color shift keying modulation scheme. With regard to the R, G, B format of a JPEG image, we generate ...
Antenna compression using binary phase coding
(American Geophysical Union, 2001-01-01)
We introduce the first antenna “compression” scheme for coherent radars. The idea is to transmit with a large array of phase‐coded antennas at full power and later synthesize by linear superposition and proper phasing, the ...
A New Approach for Hiding Image Based on the Signature of Coeficients
This paper presents a new approach for hiding the secret image inside another image file, depending on the signature of coefficients. The proposed system consists of two general stages. The first one is the hiding stage ...
Wide-beam forming using binary phase coding
(Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 2000)
In imaging work, it is desirable to have the transmitting beam width matched to the receiving one. One possibility to do this at Jicamarca, when single receiving modules are employed, is using one antenna module as the ...