images can now be easily modified due to advances in digital imageprocessing. image forgery is the process of manipulating or changing a digital image in order to conceal vital information. Nowadays, as technology ad...
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Autofocus optical imaging systems are widely used in industrial inspection, medical diagnosis, drone photography, machine vision and other fields. image-based autofocus algorithms typically consist of two key steps: i...
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In recent years, Flapping-wing Micro Aerial Vehicles (FMAVs) have gained increasing attention due to their biomimetic appearance and excellent maneuverability. Equipping them with object detection systems to make them...
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ISBN:
(数字)9798350355413
ISBN:
(纸本)9798350355420
In recent years, Flapping-wing Micro Aerial Vehicles (FMAVs) have gained increasing attention due to their biomimetic appearance and excellent maneuverability. Equipping them with object detection systems to make them more intelligent is becoming a major trend. This paper proposes an aerial photography small object detection algorithm under adverse weather conditions based on YOLOv8. Using a custom dataset, the concluding mAP50 (mean Average Precision at Intersection over Union threshold of 0.5) reached 0.761, surpassing other datasets. The mAP50 improved from 0.627 to 0.708 compared to model validation on the VisDrone2019 dataset, surpassing other mainstream object detection models.
Many video surveillance systems (VSS) have been already developed for various application domains. Such systems are based on well-elaborated recognition algorithms of Artificial Intelligence (AI) and implemented as Am...
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ISBN:
(数字)9789526924489
ISBN:
(纸本)9789526924489
Many video surveillance systems (VSS) have been already developed for various application domains. Such systems are based on well-elaborated recognition algorithms of Artificial Intelligence (AI) and implemented as Ambient Intelligence (AmI) services in Internet of Things (IoT) environments. In particular, algorithms support such smart VSS functions of video data processing as human detection, human identification, object location within an image, human activity recognition. Many software tools have been developed to implement various recognition algorithms for VSS development. In this paper, we consider the following VSS development problems: a) a generic model of events in video data for a given problem domain, b) a hardware-software architecture for data processing with existing recognition algorithms, and c) a model to construct a required smart VSS function using existing software tools. We introduce our event-oriented approach to solve the above VSS development problems. The approach is experienced in several use cases. Our experimental study shows the applicability of the proposed approach in terms of the accuracy and performance.
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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ISBN:
(数字)9798331516550
ISBN:
(纸本)9798331516567
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 entail bulky setups and complex data acquisition processes, limiting their accessibility and efficiency in various applications. This paper designs a desktop SEM image data acquisition and transmission system based on FPGA. The system is divided into two parts: signal modulation and AD sampling circuit and image data processing and transmission circuit. By designing a circuit to process SE/BSE signals, signal modulation and analog-to-digital conversion are achieved. The sampling data is processed using the internal resources of the FPGA and transmitted to the PC through the USB3.0 high-speed interface, and finally displayed as a grayscale image. The system realizes real-time collection, processing and transmission of SEM signals, providing convenience and efficiency for scientific research and engineering applications. Experimental verification shows that the system performs well and has certain application potential.
The research of solar cells has gone through three generations, silicon solar cells, thin film solar cells and perovskite solar cells. There are a variety of characterization methods used to analyze the factors that a...
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With the increase of resolution, SAR systems operate on wider bandwidth. When SAR works with squint angle, signals of different frequencies will generate different Doppler offset at the same squint angle. As the squin...
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As part of solving a set of computer vision problems when analyzing video streams, a fairly popular task is to effectively stop the process of identifying scenes or objects. Arresters are one of the main problems in s...
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The Transformer is a deep neural network model that utilizes attention mechanisms to improve model performance. Initially, the Transformer gained significant attention in the field of natural language processing. In r...
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To preserve the image details more precisely and fully after image filtering, a directional mean filtering algorithm based on the edge direction of noise points is proposed. Firstly, pepper and salt noise recognizer m...
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