Çok ölçekli ikili benzerlik yüz tanıma için yerel ikili örüntü varyantı

Face recognition problem has been studying for more than four-decade, and many descriptors and neural network architectures were proposed. The aim is simple, extract features from the same subjects for training and test face image sets, if the proposed method was accurate, the extracted features categorized under the same label. However, the problem starts with the illumination effect on the images; the illumination effect may cause the extracted features for the same subject to be classified with the different labels. Therefore, illumination and other environmental impacts should be removed for accurate classification. One solution for eliminating environmental effect is using Local Binary Pattern (LBP) descriptor. LBP is an illumination invariant, computationally simple, and highly discriminative visual descriptor. Therefore, LBP based descriptors have been developing for more than a two-decade for solving face recognition problem. LBP′s computationally simple property make it applicable to different types of computer vision problems, also there are many examples of LBP variants either achieved state-of-the-art results in a particular application or complementary to the LBP. Having been inspired from the results, in this thesis, an LBP variant descriptor, Multi-scale Binary Similarity approach is proposed. MSBS encodes face image characteristic by analyzing the pixel relationships in selected components. The encoded features of the MSBS trained with Support Vector Machines (SVM) and tested with AT&T, Extended Yale B, Georgia Tech and MNIST datasets. The results show that MSBS outperforms most of the proposed approaches in the literature.