As a principal component analysis of the images based on an ordered structure, the greatest eigen fuzzy set (GEFS) and the smallest eigen fuzzy set (SEFS) of max-min composition and adjoint one, are proposed. In the c...
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Early classification of time-series data in a dynamic environment is a challenging problem of great importance in signalprocessing. This paper proposes a classifier architecture with a reject option capable of online...
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ISBN:
(纸本)9781467358538
Early classification of time-series data in a dynamic environment is a challenging problem of great importance in signalprocessing. This paper proposes a classifier architecture with a reject option capable of online decision making without the need to wait for the entire time series signal to be present. The main idea is to classify an odor/gas signal with an acceptable accuracy as early as possible. Instead of using posterior probability of a classifier, the proposed method uses the "agreement" of an ensemble to decide whether to accept or reject the candidate label. The introduced algorithm is applied to the bio-chemistry problem of odor classification to build a novel Electronic-Nose called Forefront-Nose. Experimental results on wind tunnel test-bed facility confirms the robustness of the forefront-nose compared to the standard classifiers from both earliness and recognition perspectives.
Based on the analysis of the infrared thermometry principle, using low power Bluetooth4.0 technology and combining software and hardware, a thermometer was designed, which can send temperature data to the mobile phone...
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ISBN:
(纸本)9781479970056
Based on the analysis of the infrared thermometry principle, using low power Bluetooth4.0 technology and combining software and hardware, a thermometer was designed, which can send temperature data to the mobile phone by Bluetooth4.0. After amplified the infrared temperature sensor signal of the thermometer by a instrumentation amplifier, CC2540 carries on the AD sampling, based on the infrared thermometry principle, to calculate the temperature value. Finally the temperature value will be sent to the mobile phone through the Bluetooth 4.0, and the temperature value can be plotted as a line so that we can clearly observe patient's temperature changes for a long time. Through the actual test, the feasibility of the system was verified.
Due to the limited number of implantable electrodes, correcting the input image such that the electrode stimulus ultimately reaching the visual pathway contains sufficient topological information is a challenging task...
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ISBN:
(纸本)9781538685273
Due to the limited number of implantable electrodes, correcting the input image such that the electrode stimulus ultimately reaching the visual pathway contains sufficient topological information is a challenging task. Some imageprocessing strategies have been applied to the image-to electrode mapping process previously in order to obtain better recognition performance under simulated prosthetic vision. In this work, a method for foreground extraction and pixelation of images containing simple objects using the state-of-the-art deep learning techniques was proposed. For that, accurate foreground extraction results were obtained by training the U-net network model, pixelated them and paired with the original images. These paired samples were then used to train a Pix2pix generative adversarial network in order to achieve the image-to-pixelated image translation. The experimental results indicated that the U-net network had better foreground extraction effect than the traditional imageprocessing strategies, and the pixelated images generated by the Pix2pix generative model contained more abundant and precise details than other strategies.
Spectral image clustering discovers groups and identifies distributions from spectral signatures without requiring a previous training stage. The sparse subspace clustering-based methods group spectral signatures in d...
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ISBN:
(纸本)9781728114910
Spectral image clustering discovers groups and identifies distributions from spectral signatures without requiring a previous training stage. The sparse subspace clustering-based methods group spectral signatures in different subspaces, finding the sparsest representation for each pixel, guaranteeing that they belong to the same class. Although these methods have shown good accuracy, as the number of pixels increases, computational complexity becomes intractable. This paper proposes to reduce the number of pixels to be classified in the spectral image by half through a sub-sampling procedure that eliminate every two contiguous pixels, preserving the spatial structure of the image. Then, the clustering result is obtained using its spatial information. The performance of the proposed spectral image clustering framework is evaluated in three datasets showing that similar accuracy is obtained up to 7.9 times faster compared to the classification of the data sets without subsampling.
Structural Similarity Index (SSIM) has been a benchmark method for image quality assessment (IQA). This is due to its simplicity and good performance. In this paper, we propose a modified SSIM method that reduces the ...
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ISBN:
(纸本)9781728130385
Structural Similarity Index (SSIM) has been a benchmark method for image quality assessment (IQA). This is due to its simplicity and good performance. In this paper, we propose a modified SSIM method that reduces the computational complexity with comparable performance. Instead of computing similarities on local windows, the proposed method computes global information similarities. The proposed method omits the luminance part similarities in SSIM due to its less crucial role in assessing image quality. From the presented results, the proposed method has a much lower computational time and comparable performance compared to SSIM.
This paper sets the basis of a robot collaborative application framework that is able to perform basic interactions with a human partner, namely patrol and monitor a designated area, followed by interaction with a hum...
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ISBN:
(纸本)9781479999118
This paper sets the basis of a robot collaborative application framework that is able to perform basic interactions with a human partner, namely patrol and monitor a designated area, followed by interaction with a human participant when this is detected. The application is developed using an adaptation of ROS to Corobot robot and imageprocessing techniques that involve OpenCV face detection.
The task of classifying radio frequency (RF) signals has seen recent success in employing deep neural network models. In this work, we present a combined signalprocessing and machine learning approach to signal class...
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ISBN:
(纸本)9798350317657;9798350317640
The task of classifying radio frequency (RF) signals has seen recent success in employing deep neural network models. In this work, we present a combined signalprocessing and machine learning approach to signal classification for cochannel anomalous signals. The power spectral density and cyclostationary signalprocessing features of a captured signal are computed and fed into a neural net to produce a classification decision. Experiments show that our neural model utilizing both PSD and CSP features are superior to models only using CSP features, and achieve near perfect classification. Our combined signal preprocessing and machine learning approach allows for simpler neural networks with fast training times and small computational resource requirements for inference with longer preprocessing time.
In this paper, a series of research on face recognition is carried out by using the function of imageprocessing in MATLAB, and a general face recognition simulation system with a combination of preprocessing and face...
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ISBN:
(纸本)9781538685273
In this paper, a series of research on face recognition is carried out by using the function of imageprocessing in MATLAB, and a general face recognition simulation system with a combination of preprocessing and face recognition is implemented. First, the image is preprocessed, and then the graphical user interface is established. In order to achieve the goal of face recognition, the PCA method is used to compare the database. The simulation results show that the face recognition simulation system can realize the recognition of the face image accurately.
Any data based method is vulnerable to the problem of extrapolation, nonetheless there exists no unified theory on handling it. The main topic of this publication is to point out the differences in definitions of extr...
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ISBN:
(纸本)9781479945184
Any data based method is vulnerable to the problem of extrapolation, nonetheless there exists no unified theory on handling it. The main topic of this publication is to point out the differences in definitions of extrapolation and related methods. There are many different interpretations of extrapolation and a multitude of methods and algorithms, which address the problem of extrapolation detection in different fields of study. We examine popular definitions of extrapolation, compare them to each other and list related literature and methods. It becomes apparent, that the opinions what extrapolation is and how to handle it, differ greatly from each other. We categorize existing literature and give guidelines to choose an appropriate definition of extrapolation for a present problem. We also present hull algorithms, from classic approaches to recent advances. The presented guidelines and categorized literature enables the reader to categorize a present problem, inspect relevant literature and apply suitable methods and algorithms to solve a problem, which is affected by extrapolation.
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