Experimental mechanical analysis of cancellous bone has been performed to capture the global strain field of
specimens under compression. One major objective is to assess the test procedure and obtain the cancellous bone
mechanical properties. Now a day, several techniques are available for the experimental measurement of the field
displacement. Among them, the Cross-Correlation is one of most simple’s techniques and can be applied to several studies cases. Based on the correlation of random speckle pattern between two images, the spatial displacement fields can be
accessed. A simple digital camera or video recorder can be used without special light to capture the surface intensity pattern
in each instant. If several images are taken during a test loading, the displacement field can be fallowed and subsequently
the strain can be obtain by the spatial differentiation. Because of random surface pattern, the image can be divided in small
areas, each of them pattern independent. By cross-correlating each of one between the two images, the relative displacement is obtained
