scholarly journals Face Recognition on Low-Resolution Image using Multi Resolution Convolution Neural Network and Antialiasing Method

2019 ◽  
Vol 10 (12) ◽  
Author(s):  
Mario Imandito ◽  
Suharjito
Keyword(s):  
Neural Network ◽  
Face Recognition ◽  
Convolution Neural Network ◽  
Low Resolution ◽  
Resolution Image

scholarly journals New Access to Improve Super Resolution using Convolution Neural Network

2019 ◽  
Vol 8 (6S) ◽  
pp. 160-165
Keyword(s):  
Neural Network ◽  
Image Quality ◽  
Super Resolution ◽  
Convolution Neural Network ◽  
Low Resolution ◽  
Filtration Method ◽  
Resolution Image ◽  
Smoothness Index ◽  
Preprocessing Technique ◽  
Filtration Technique

Super Resolution is the process to enhance image quality by increasing the pixel densities from a low resolution image. Several methods are proposed in the last few decades. We survey several methods like filtration method i.e. Scalar Smoothness Index filtration, learning based method using Convolution Neural Network. We also propose a new algorithm where we use filtration technique as a preprocessing technique of learning based method.

scholarly journals Fast Target Localization Method for FMCW MIMO Radar via VDSR Neural Network

2021 ◽  
Vol 13 (10) ◽  
pp. 1956
Author(s):  
Jingyu Cong ◽  
Xianpeng Wang ◽  
Xiang Lan ◽  
Mengxing Huang ◽  
Liangtian Wan
Keyword(s):  
Neural Network ◽  
Continuous Wave ◽  
Super Resolution ◽  
Mimo Radar ◽  
Target Localization ◽  
Estimation Accuracy ◽  
Low Resolution ◽  
Range Estimation ◽  
Resolution Image ◽  
Resolution Imaging

The traditional frequency-modulated continuous wave (FMCW) multiple-input multiple-output (MIMO) radar two-dimensional (2D) super-resolution (SR) estimation algorithm for target localization has high computational complexity, which runs counter to the increasing demand for real-time radar imaging. In this paper, a fast joint direction-of-arrival (DOA) and range estimation framework for target localization is proposed; it utilizes a very deep super-resolution (VDSR) neural network (NN) framework to accelerate the imaging process while ensuring estimation accuracy. Firstly, we propose a fast low-resolution imaging algorithm based on the Nystrom method. The approximate signal subspace matrix is obtained from partial data, and low-resolution imaging is performed on a low-density grid. Then, the bicubic interpolation algorithm is used to expand the low-resolution image to the desired dimensions. Next, the deep SR network is used to obtain the high-resolution image, and the final joint DOA and range estimation is achieved based on the reconstructed image. Simulations and experiments were carried out to validate the computational efficiency and effectiveness of the proposed framework.

scholarly journals Penerapan Liveness Sebagai Anti-Spoofing Citra Digital Pada Sistem Keamanan Akses Kontrol Ruang Server Berbasis Raspberry Pi

2021 ◽  
Vol 16 (2) ◽  
pp. 31
Author(s):  
Galih Rizkya Safri ◽  
Denny Irawan ◽  
Rini Puji Astutik
Keyword(s):  
Neural Network ◽  
Face Recognition ◽  
Local Binary Pattern ◽  
Convolution Neural Network ◽  
Raspberry Pi

Ruang server merupakan ruang yang menyimpan aset-aset dan data-data penting dari suatu perusahaan sehingga keamanan untuk akses keluar masuk ruang server perlu diperhatikan agar menghindari kejadian yang tidak diinginkan. Pada saat ini sudah banyak dikembangkan sistem keamanan hingga kunci konvensional, RFID, serta sistem keamanan menggunakan teknologi biometrik seperti sidik jari, iris, dan juga wajah yang memiliki karakteristik berbeda setiap wajahnya sehingga diharapkan bisa menjadi sistem keamanan yang handal. Seiring berkembangnya teknologi membuat seseorang semakin mudah mengakses internet untuk mendapatkan data-data biometrik seperti wajah yang dapat di gunakan untuk pemalsuan atau spoofing untuk mendapatkan akses ilegal ke suatu ruangan. Penelitian sistem keamanan ini menggunakan pegenalan wajah (face recognition) dan liveness sebagai anti- spoofing dan metode Local Binary Pattern dan Convolution Neural Network untuk meningkatkan sistem keamanan agar terhindar dari pemalsuan wajah. Hasil penelitian ini mendapatkan keakuratan pendeteksian wajah asli atau palsu sebesar 90% dan akurasi sistem dalam mengenali wajah sebesar 93.3%. Kesalahan proses pengenalan wajah terjadi 5 kali dan kesalahan saat proses pengenalan wajah dan 2 kali saat pengenalan wajah asli, dari 4 skenario dengan 40 kali uji coba. Sistem keamanan pada penelitian ini 95% bekerja dengan baik dan sesuai dengan perencanaan

scholarly journals Application Research of Deep Convolutional Neural Network in Computer Vision

2020 ◽  
Vol 2 (2) ◽  
pp. 23
Author(s):  
Lei Wang
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Computer Vision ◽  
Face Recognition ◽  
Human Brain ◽  
Image Classification ◽  
Convolutional Neural Networks ◽  
Convolution Neural Network ◽  
Data Set ◽  
Deep Convolution Neural Network

<p>As an important research achievement in the field of brain like computing, deep convolution neural network has been widely used in many fields such as computer vision, natural language processing, information retrieval, speech recognition, semantic understanding and so on. It has set off a wave of neural network research in industry and academia and promoted the development of artificial intelligence. At present, the deep convolution neural network mainly simulates the complex hierarchical cognitive laws of the human brain by increasing the number of layers of the network, using a larger training data set, and improving the network structure or training learning algorithm of the existing neural network, so as to narrow the gap with the visual system of the human brain and enable the machine to acquire the capability of "abstract concepts". Deep convolution neural network has achieved great success in many computer vision tasks such as image classification, target detection, face recognition, pedestrian recognition, etc. Firstly, this paper reviews the development history of convolutional neural networks. Then, the working principle of the deep convolution neural network is analyzed in detail. Then, this paper mainly introduces the representative achievements of convolution neural network from the following two aspects, and shows the improvement effect of various technical methods on image classification accuracy through examples. From the aspect of adding network layers, the structures of classical convolutional neural networks such as AlexNet, ZF-Net, VGG, GoogLeNet and ResNet are discussed and analyzed. From the aspect of increasing the size of data set, the difficulties of manually adding labeled samples and the effect of using data amplification technology on improving the performance of neural network are introduced. This paper focuses on the latest research progress of convolution neural network in image classification and face recognition. Finally, the problems and challenges to be solved in future brain-like intelligence research based on deep convolution neural network are proposed.</p>

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