A method of image segmentation has been developed based on creating links between pixels in successive layers of a "pyramid" of reduced-resolution versions of the image. In the original implementation of this method, the links were based on comparing the values of a single feature, (average) gray level, for each pixel. In this note, the method is extended to links based on multiple features, su...

In the case of every species, many different checks, acting at differ­ ent periods of life, and during different seasons or years, probably come into play; some one check or some few being the most potent, but all concurring in determining the average number or even the existence of the species. . . . When we look at the plants and bushes clothing an entangled bank, we are attempted to attribut...

This paper discusses the implementation of insect-inspired visual navigation strategies in flying robots, in particular focusing on the impact of changing height. We start by assessing the information available at different heights for visual homing in natural environments, comparing results from an open environment against one where trees and bushes are closer to the camera. We then test a rou...

We characterized and compared taxonomic features of two species of tree crickets Oecanthus in tobacco plantation and adjacent native trees and bushes at Southern Brazil. The marked differences between species included Oecanthus n. sp. with palegreen body, pale-yellow head, greenish-white eyes, file teeth number 32.8±1.2 (31–34, n = 6) and hindwings caudate. Oecanthus lineolatus is slightly dark...

Changes in land use and cover (LULC) protected areas can lead to an ecological imbalance these territories. Temporal monitoring predictive modeling are valuable tools for making decisions about conserving planning actions reduce the pressure caused by activities such as agriculture. This study accordingly developed LULC analysis framework based on open-source software (QGIS R language) methodol...

It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us...