Aiming at the problem of pollution accumulation on the surface of insulators of transmission lines, an innovative image fusion improvement algorithm based on non-downsampled shear wave transform (NSST) and pulse-coupl...
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In this paper, the Choi-Williams method is used to describe five typical jamming signals, and the grayscale images of the time-frequency two-dimensional distribution of the jamming signals are obtained. The contour in...
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In order to make full use of the color information of the image and improve the accuracy of color image segmentation, this paper proposes an adaptive SLIC-based fuzzy intensity dissimilarity thresholding for color ima...
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High-frequency imaging sonar systems are a critical technology for underwater sensing. Design and experimental validation of signal processingalgorithms for image reconstruction is very challenging due to difficultie...
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ISBN:
(纸本)9798350362077
High-frequency imaging sonar systems are a critical technology for underwater sensing. Design and experimental validation of signal processingalgorithms for image reconstruction is very challenging due to difficulties in deployment and accurate positioning. Modelling and simulation are powerful tools to evaluate the system before prototyping. Unfortunately, there are only a few simulation tools available, and the computation complexity for accurate simulation is very high. Most of the simulators directly convert the estimated target range, receive beam direction and reflected intensity level in to synthetic sonar image. These simulators are not accounting for the spatial response of the array with beamformer and temporal response of the waveform, while generating the image. To evaluate the effectiveness of different signal processing techniques for image reconstruction, a received signal model for the sensor array considering the array and waveform properties is essential. This paper presents an efficient signal and noise simulator, to generate the sonar receiver array signal time series for practical imaging scenarios, with five times lesser computation time compared to the state-of-the-art simulator reported in the literature. The simulator also contains a basic sonar processing module which performs near-field beamforming, matched filtering and imageprocessing on the simulated signal, to generate the final sonar image. Optimisation in the sonar receiver and signal processing can be conveniently evaluated through this simulation scheme. The simulation results are compared with experimental results to verify the simulation model. Being generic in nature this simulator can simulate sector scan sonar, single beam and multi-beam side scan sonars simultaneously for the same simulation scenario. This enables verification of co-registration of side scan and gap filler sonar images.
Intelligent control and computer vision algorithms can achieve clearer, more delicate, and realistic image effects through extremely high image quality and target recognition technology, as well as complete image proc...
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In the rapidly evolving field of autonomous driving, proficient detection and recognition of traffic signs are fundamental for ensuring the safety and efficiency of selfdriving vehicles. This research aims to identify...
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In the era of big data, imageprocessing still faces significant bottlenecks compared to other fields of computer science. In this paper we studied the feature point extraction algorithm based on gray points and the s...
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The morphing attack is widely acknowledged as an important security threat to face recognition systems in the context of electronic machine readable travel documents and several possible countermeasures have been rece...
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Scanning electron microscopy (SEM) has emerged as a pivotal tool in scientific research and engineering, offering unparalleled insights into the micro- and nano-scale world. However, traditional SEM systems often enta...
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The recently introduced Consistency models pose an efficient alternative to diffusion algorithms, enabling rapid and good quality image synthesis. These methods overcome the slowness of diffusion models by directly ma...
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