C-V method, an active contour model developed by Chan and Vese, has been successfully applied to solve the problem of object detection in grayscale images. In this paper, a novel color C-V method which takes into acco...
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ISBN:
(纸本)3540290699
C-V method, an active contour model developed by Chan and Vese, has been successfully applied to solve the problem of object detection in grayscale images. In this paper, a novel color C-V method which takes into account of color information and global property is presented. Choosing the appropriate color space for this model is also introduced. Finally, the applications of the proposed method to natural color images and microscopic halftone printing images are given and the experimental results show robust performance especially in case of weak edges and noisy inputs.
Face recognition is an exigent problem in Biometrics and Computer Vision. It has become a wonderful field for researchers and can be widely used in applications like surveillance and security also. To create strong an...
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ISBN:
(纸本)9781538628423
Face recognition is an exigent problem in Biometrics and Computer Vision. It has become a wonderful field for researchers and can be widely used in applications like surveillance and security also. To create strong and distinct features, increase the inter-personal variations and decrease the intra-personal variations simultaneously remains a demanding problem in facial recognition. In this paper, the researcher explains how to improve the ability of face recognition system using Local Binary pattern (LBP) for feature extraction and Convolution Neural Network (CNN) for classification of the images. The correspondence between the trained images helps CNN to converge faster and achieve better accuracy. There is a great improvement compared to other traditional methods too. To evaluate the accomplishment of this new method, it is found that higher face recognition accuracy can be achieved with less computational cost. The proposed framework is tested on the Yale dataset and achieved an accuracy of 98.6%.
Deterioration of the bone's microarchitecture and low bone mineral density, which results in increased fragility of bone, are symptoms of the disease osteoporosis, which decreases bone mass. Early osteoporosis ide...
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In our biometric verification system of a smart gun, the rightful user of a gun is authenticated by grip-patternrecognition. In this work verification will be done using two types of comparison methods, respectively....
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ISBN:
(纸本)9781424427291
In our biometric verification system of a smart gun, the rightful user of a gun is authenticated by grip-patternrecognition. In this work verification will be done using two types of comparison methods, respectively. One is mean-template comparison, where the matching score between a test image and a subject is computed, by comparing the test image to the mean value of training samples of this subject. The other one is maximum-pairwise comparison, where the matching score between a test image and a subject is selected as the maximum, among all the similarity scores resulting from comparison between the test image and each training sample of this subject. Experimental results show that a much lower false-acceptance rate can be obtained at the required false-rejection rate of our system using maximum-pairwise comparison, than mean-template comparison.
Putting forward a kind of star identification algorithm based on SOFM neural network. Firstly, using dynamic threshold selection algorithm what is based on supporting vector machine select guide stars to composite the...
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ISBN:
(纸本)9783037858646
Putting forward a kind of star identification algorithm based on SOFM neural network. Firstly, using dynamic threshold selection algorithm what is based on supporting vector machine select guide stars to composite the navigation star database, then a recognition system what contain multiple parallel SOFM subnets for star map recognition is designed. Simulated recognition results show that the SOFM network can extract complex feature recognition navigation star from the chart. Compared with the traditional triangle algorithm, this algorithm has better recognition accuracy, robustness and real-time.
Current methods of multimodal image registration usually seek to maximize the similarity measure of mutual information (MI) between two images over their region of overlap. In applications such as planned radiation th...
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ISBN:
(纸本)3540290699
Current methods of multimodal image registration usually seek to maximize the similarity measure of mutual information (MI) between two images over their region of overlap. In applications such as planned radiation therapy, a diagnostician is more concerned with registration over specific regions of interest (ROI) than registration of the global image space. Registration of the ROI can be unreliable because the typically small regions have limited statistics and thus poor estimates of entropies. We examine methods to improve ROI-based registration by using information from the global image space.
In machine learning andpatternrecognition, principal component analysis (PCA) is a very popular feature extraction and dimensionality reduction method for improving recognition performance or computational effiency....
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ISBN:
(纸本)9781479931842
In machine learning andpatternrecognition, principal component analysis (PCA) is a very popular feature extraction and dimensionality reduction method for improving recognition performance or computational effiency. It has been widely used in numerous applications, especially in face recognition. Researches often use PCA integrating the nearest neighbor classifier (NNC) based on Euclidean distance (ED) to classify face images. We refer to this method as PCA+ED. However, we have observed that PCA can not significantly improve the recognition performance of NNC based on Euclidean distance through many experiments. The main reason is that PCA can not significantly change the Euclidean distance between samples when many components are used in classification. In order to improve the classification performance in face recognition, we use another distance measure, i.e., Mahalanobis distance (MD), in NNC after performing PCA in this paper. This approach is referred to as PCA+MD. Several experiments show that PCA+MD can significantly improve the classification performance in face recognition.
Face detection is one of the few biometric methods that possess the merits of both high accuracy and low intrusiveness. It also has several applications in areas such as content-based image retrieval, video coding, vi...
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ISBN:
(纸本)9783642204982
Face detection is one of the few biometric methods that possess the merits of both high accuracy and low intrusiveness. It also has several applications in areas such as content-based image retrieval, video coding, video conferencing, crowd surveillance, and intelligent human computer interfaces. The purpose of this study is to propose a novel statistical face recognition system with improved performance, based on Gray Level Weight Matrix (GLWM). The process involved in GLWM is an improved version of the Local Binary pattern technique. It has been found out through experiments that the proposed GLWM is more efficient in face recognition.
Deep convolutional Neural Networks (DNN) is the state-of-the-art machine learning method. It has been used in many recognition tasks including handwritten digits, Chinese words and traffic signs, etc. However, trainin...
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ISBN:
(纸本)9781479921904
Deep convolutional Neural Networks (DNN) is the state-of-the-art machine learning method. It has been used in many recognition tasks including handwritten digits, Chinese words and traffic signs, etc. However, training and test DNN are time-consuming tasks. In practical vehicle detection application, both speed and accuracy are required. So increasing the speeds of DNN while keeping its high accuracy has significant meaning for many recognition and detection applications. We introduce parallel branches into the DNN. The maps of the layers of DNN are divided into several parallel branches, each branch has the same number of maps. There are not direct connections between different branches. Our parallel DNN (PNN) keeps the same structure and dimensions of the DNN, reducing the total number of connections between maps. The more number of branches we divide, the more swift the speed of the PNN is, the conventional DNN becomes a special form of PNN which has only one branch. Experiments on large vehicle database showed that the detection accuracy of PNN dropped slightly with the speed increasing. Even the fastest PNN (10 times faster than DNN), whose branch has only two maps, fully outperformed the traditional methods based on features (such as HOG, LBP). In fact, PNN provides a good solution way for compromising the speed and accuracy requirements in many applications.
Document image analysis andrecognition (DIAR) techniques are a primary application of patternrecognition. OFR is one of the most important DIAR techniques. The information about font type indicates important informa...
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