Red and bright colors correspond to young and pioneer mangrove areas and finest texture (highest scores on PC1, PC2 and PC3). See figure 4. Cyan to magenta gradient correspond to adult and mature mangrove with intermediate canopy grain. Green color (high values on PC2, low values elsewhere) show decaying mangrove trees areas with coarse canopy grain due.

It is he same area but  FOTO mapping is realized using 4-m NIR IKONOS image. Image horseshoe of figure 4 is turned of about 45° to the right. Decaying mangrove areas present low scores on PC1 and PC2 with highest scores on PC3 (they are mainly colored in  blue) whereas young mangrove has high values on PC2 and PC3 (color is turquoise). Note the degradation of details within this 120-m pixel map.

This is a smoothed (inter pixel interpolation) FOTO map over the Paracou Site in French Guiana. A fourth channel consisting of the IGN aerial photograph is added to the RGB composite in order to analyze gradient  of colors. Such processing involved two aerial photographs to be pooled. It is noticeable that FOTO processing was applied on raw images before geo-processing. Red color seems to correspond to finest texture whereas green color are observed over areas of large tree crowns. This tentative highlights problems that are encountered in FOTO mapping: the FOTO indices obtained on the first image borders could differ from the indices obtained on the second images borders since viewing angle are not the same. On the case of Paracou site, the hilly topography introduces spatial frequencies (at the landscape scale) that have to be deconvoluted to direct signals originating from structural organization at the forest plot scale. Working on mangrove flat areas present serious advantages to further develop the FOTO method. Effects of viewing angles could be properly investigated. Use of satellite image with nearby vertical view across the whole scene could help
preliminary FOTO mapping of tropical rainforest,... provided that cloud cover are not permanent.

In this composite image consisting of RGB+I FOTO map and panchromatic QUICKBIRD image, roads, tracks, plantations or deforested areas were not masked. At a glance, cultivated areas (red, yellow) are from both sides of the hill where forest organization show gradient between green and blue. Sunlit and shadowed canopies seem to show shades of green and blue colors respectively. The result is highly colored and 60 cm satellite images prove that  analysis of canopy grain requires much more work to be fully exploited in relation with ground measurements.