Determination of material behavior is one of the main tasks of experimental mechanics. Estimation of material response due to the applied loading is manifested through the measuring of the displacements and strains on the test sample. The classical contact measurement methods of the material response enable the registration of the changes between only two selected points on the measuring surface, which is not enough when the sample is subject to complex loading regimes. With the development of the optical measurement methods of the entire displacement and/or deformation field, it is possible to analyze the material response over the whole region of interest. The most commonly used optical measurement technique is Digital Image Correlation. The proposed method is based on the tracking of characteristic point on the measuring surface in a series of digital images. By determining the position change of the proposed points, it is possible to measure the displacement and/or strain between them. In order to conduct the measurements via Digital Image Correlation, it is necessary to apply a suitable texture to the measuring surface. Data processing, i.e. digital image processing, in Digital Image Correlation can be carried out by local and global approach. The accuracy of the Digital Image Correlation significantly depends on the quality of the prepared texture, applied measuring equipment and the selected approach. In this thesis various ways of obtaining artificial texture are presented, the local and global approaches of the Digital Image Correlation are described in detail and measurements are made on samples with two different artificial textures. The textures used for the measurements were made by spray and airbrush. The measurements were performed using the local approach based Aramis optical system and the correlation algorithm RT3 Correli, which provides the results of a global approach. The investigations were performed on the unloaded samples in order to determine the impact of the noise and the imperfection of the measuring system on the measurement reliability of the small displacement and strain changes. Based on the obtained displacement and strain fields, standard displacement and strain resolution were determined. Furthermore, the obtained results reveal the smallest displacement/strain increment that can be reliably measured via proposed technique according to the size of the facet or the finite element.