| 摘要 |
<p>The method according to the invention comprises: - a step (E40) of evaluating an intermediate degree (T(S)) of the sample for each value (S) of a plurality of threshold values included between two determined limit values (S1, S2), this intermediate degree being equal to the ratio between the number of pixels of said at least one image having a grey level bounded by this threshold value and the total number of pixels of said at least one image; - a step (E50 E60) of estimating the degree of porosity of the sample by analysing the variations of the intermediate degree as a function of the threshold values.</p> |
