A mesh refinement procedure designed for Digital Image Correlation analyses of cracked media is proposed, based on the pixel color an artificial case, and crack opening displacement field two experimental cases. Although evidence that this can improve every case if tiny elements are sought, it also shown size matrices consequently, computational cost be reduced while maintaining accuracy, espec...

This paper reports on an investigation into stitching techniques used to secure woven tapestry artefacts fabric supports. A research project digital image correlation (DIC) as a method of evaluating commonly support techniques, with tests carried out wool rep and historic fragment. Though it was necessary first establish parameters for use, DIC proved very helpful the effects these treatments. ...

background the first commercial system for digital radiography was introduced in 1987, and it has evolved a great deal since then. currently, it is possible to enhance images in digital radiography. objectives the aim of this study is to evaluate the diagnostic accuracy of image enhancement in direct digital radiography as it relates to interproximal carries assessment. conclusions using these ...

Atmospheric visibility is a standard of human visual perception of the environment. It is also directly associated with air quality, polluted species and climate. The influence of urban atmospheric visibility affects not only human health but also traffic safety and human life quality. Visibility is traditionally defined as the maximum distance at which a selected target can be recognized. To r...

The computational burden associated to finite element based digital image correlation methods is mostly due to the inversion of finite element systems and to image interpolations. A non-overlapping dual domain decomposition method is here proposed to rationalize the computational cost of high resolution finite element digital image correlation measurements when dealing with large images. It con...

raw cane sugar is one of the most important product in the sugar industry and is the main raw material for the white sugar production. morphological and physical properties of this product might influence the final white sugar. for instance, the behavior during centrifugation, transport and storage is related to the characteristics of these crystals. the object of this study was to determine th...

This work presents a digital image processing approach with a unique hive triangle pattern by integrating subpixel analysis for noncontact measurement of structural dynamic response data. Feasibility of proposed approach is demonstrated based on numerical simulation of a photography experiment. According to those results, the measured time-history displacement of simulated image correlates well...