... | ... | @@ -46,7 +46,7 @@ A correct result of optimization procedure required a good initial force distrib |
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__In the case of high quality pictures__ (resolution and contrast), a $`G^2_i`$ at each contact $`i`$ can be computed using a small region of interest located near the contact point. The false and _non-force-bearing_ contacts are eliminated if their $`G^2_i`$ value is lower than a threshold value on both contacting disks. The sum of the contact force magnitude is then distributed on the remaining contacts in proportion to the value of $`G^2_i`$. [1]
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__In the case of low quality pictures__, each possible combination of active contact is provided to the optimization procedure. The sum of the contact force magnitude is equally distributed over the active contacts. This approach is slower than the previous one and only gives good results when the contact force are almost equally distributed over the active contacts. To overcome the second drawback the fitting procedure will consider all the granular media to propagate the fitted forces on the adjacent disk when the optimization procedure succeed (PhD Thesis of O. Lantsoght, currently defending).
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__In the case of low quality pictures__, each possible combination of active contact is provided to the optimization procedure. The sum of the contact force magnitude is equally distributed over the active contacts. This approach is slower than the previous one and only gives good results when the contact force are almost equally distributed over the active contacts. To overcome the second drawback the fitting procedure will consider all the granular media to propagate the fitted forces on the adjacent disk when the optimization procedure succeed (PhD Thesis of O. Lantsoght, Université Catholique de Louvain, 2019).
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>JK: I'm currently trying an idea to use betweenness centrality as an initial guess (based on https://pubs.rsc.org/en/content/articlepdf/2018/sm/c8sm01372a ) maybe I can add an outlook here...
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