Composite stats of seep_spill_patches and other_patches

Rob174 / detection_nappe_hydrocarbures_IMT_cefrem

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Closed Rob174 closed 3 years ago

Rob174 commented 3 years ago

$mean = \frac{\sum k}{n}$

$mean_{seepSpill} = \frac{\sum k_1}{n_1}$

with r the ratio > 1 image seepSpill image other

$mean_{other} = \frac{\sum k_2}{n_2}$

$\frac{\frac{mean_{seepSpill}}{n_2}+\frac{mean_{other}}{rn_2}}{rn_1+n_2}rn_1n_2 = \frac{r\sum k_1 + \sum k_2}{rn_1+n_2}$

Rob174 commented 3 years ago

Idem with std