The Intensity command computes an intensity measure of the layers of an image.

The img parameter specifies the input image. It may be a GrayImage, a ColorImage, or a ColorAImage. If a GrayImage, then a numeric value is returned. If a ColorImage or a ColorAImage, then a list of numeric values is returned, with each element corresponding to the value of the computation for the corresponding layer.

$\mathrm{with}\left(\mathrm{ImageTools}\right)\:$

$\mathrm{img}≔\mathrm{Create}\left(100\,200\,\left(r\,c\right)\mapsto \mathrm{evalf}\left(0.5\cdot \sin \left(\frac{r}{50}\right)+0.5\cdot \sin \left(\frac{c}{30}\right)\right)\right)\:$

$\mathrm{Intensity}\left(\mathrm{img}\right)$

$\mathrm{-0.489962295500000}..0.999974559700000$

$\mathrm{all}≔\mathrm{map2}\left(\mathrm{Intensity}\,\mathrm{img}\,\left[\mathrm{minimum}\,\mathrm{maximum}\,\mathrm{range}\,\mathrm{mean}\,\mathrm{variance}\,\mathrm{rms}\,\mathrm{energy}\right]\right)\:$

$\mathrm{evalf}\left[3\right]\left(\mathrm{all}\right)$

$\left[\mathrm{-0.490}\,1.00\,\mathrm{-0.490}..1.00\,0.362\,0.141\,0.522\,0.272\right]$