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Image interpolation is used in many areas of image processing. It is seen that many techniques developed to date have been successful in both protecting edges and increasing image quality. However, these techniques generally detect edges with gradient-based linear calculations. In this study, spiking neural networks (SNNs), which are known to successfully simulate the human visual system (HVS), are used to detect edge pixels instead of the gradient. With the help of the proposed SNN-based model, the pixels marked as edges are interpolated with a 1D directional filter. For the remaining pixels, the standard bicubic interpolation technique is used. Additionally, the success of the proposed method is compared to known methods using various metrics. The experimental results show that the proposed method is more successful than the other methods.

İçerik tabanlı görüntü erişim yöntemleri, renk, desen ve şekil bilgileri gibi farklı özelliklere ihtiyaç duymaktadır. Araştırmacılar, görüntü histogramından elde edilen verileri de bu bağlamda kullanmaktadır. Histogram bilgileri, yerel veya global olarak hesaplanır. Ancak, aynı içeriğe sahip olsalar da, farklı en / boy oranlarına sahip görüntülerde yerel yaklaşımlar kullanılamamakta ve tüm pikselleri işleyen yöntemler ile de her zaman istenilen sonuca varılamamaktadır. Bu çalışmada, farklı boyutlarda iki görüntüden, eşit sayıda pencere alınarak, görüntülerin benzerlik ölçümünde kullanılan ve yerel histograma dayanan yeni bir yöntem geliştirilmiştir. Geliştirilen yöntem, Weizmann tekli nesne görüntü bölütleme veritabanındaki 100 görüntü üzerinde test edilmiş ve yöntemin başarısı global histogram yaklaşımlarıyla karşılaştırılmıştır.

Intrusion detection systems (IDSs) have received great interest in computer science, along with increased network productivity and security threats. The purpose of this study is to determine whether the incoming network traffic is normal or an attack based on 41 features in the NSL-KDD dataset. In this paper, the performance of a stacking technique for network intrusion detection was analysed. Stacking technique is an ensemble approach which is used for combining various classification methods to produce a preferable classifier. Stacking models were trained on the NSLKDD training dataset and evaluated on the NSLKDDTest+ and NSLKDDTest21 test datasets. In the stacking technique, four different algorithms were used as base learners and an algorithm was used as a stacking meta learner. Logistic Regression (LR), Decision Trees (DT), Artificial Neural Networks (ANN), and K Nearest Neighbor (KNN) are the base learner models and Support Vector Machine (SVM) model is the meta learner. The proposed models were evaluated using accuracy rate and other performance metrics of classification. Experimental results showed that stacking significantly improved the performance of intrusion detection systems. The ensemble classifier (DT-LR-ANN + SVM) model achieved the best accuracy results with 90.57% in the NSLKDDTest + dataset and 84.32% in the NSLKDDTest21 dataset.