Two types of mechanisms could lead to loss of cement-sheath integrity: mechanical and chemical degradations. However, chemical degradation by CO2 does not seem to be a real threat when the cement sheath is initially without default. Hence, it is important to understand the mechanical mechanisms that could lead to loss Ugg Outlet Uk Bicester
of cement-sheath integrity before and during CO2 sequestration. This is with this objective that Total has developed an integrated perspective whereby all events in the life of the well, are scrutinized. The description of this perspective is the objective of this paper.
A method based on colour information is proposed to detect defects on ‘Golden Delicious’ apples. In a first step, a colour model based on the variability of the normal colour is described. To segment the defects, each pixel of an apple image Buy Uggs Cheap Online Uk
is compared with the model. If it matches the pixel, it is considered as belonging to healthy tissue, otherwise as a defect. Two other steps refine the segmentation, using either parameters computed on the whole fruit, or values computed locally. Some results are shown and discussed. The algorithm is able to segment a wide range of defects.