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Ground penetrating radar (GPR) has been extensively used as a sensory system for non-destructive evaluation of transportation infrastructure. High operation efficiency is one critical specification for GPR system design. Compressive sensing (CS) coupled orthogonal frequency division multiplexing (OFDM) techniques are utilized in GPR system design to leverage the operating efficiency. OFDM technique...
A new image encoding scheme for simultaneous encryption and compression applications, which is based on random convolution and random subsampling, is proposed. In comparison with the existing joint optical encryption and compression schemes tailored for multiple images, the proposed scheme can process a single image and achieve a robust reconstruction. The scheme with the architecture of double random...
Recent research advances have revealed the computational secrecy of the compressed sensing (CS) paradigm. Perfect secrecy can also be achieved by normalizing the CS measurement vector. However, these findings are established on real-valued measurements while digital devices can only store the samples at a finite precision. Based on the distribution of measurements of natural images sensed by structurally...
Non-destructive evaluation (NDE) of transportation infrastructure using ground penetrating radar (GPR) is an active research subject in now days. Impulse radar is one common GPR design scheme for its simple circuit architecture. However its weaknesses include low dynamic range and high cost complicate analog-to-digital converter (ADC) requirement. Stepped frequency continuous wave (SFCW) radar overcomes...
It is demanding to develop a fast and precise data processing technique for high resolution infrared thermal images. In this paper, a novel algorithm is proposed, which provides an effective way to improve the precision and computing speed for processing of thermal image data, in this paper. Firstly, the algorithm will sort the thermographic sequence data in space by using image segmentation method...
In this paper, we propose a novel approach of error correction coding based on the shape preserving characteristic of a phase-only transform. The method creates two kinds of descriptions by phase mapping and pixel interleaving respectively, and synthesizes the original image using the true phases and distorted magnitudes. At the receiving end, when both descriptions are received, a high quality reconstruction...
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