Using this data, they can determine which patches of sky and altitudes to avoid.
Some of the conditions are cosmetically annoying but otherwise harmless, like vitiligo, in which patches of skin lose pigmentation.
Aggregated retention, in which patches of trees (aggregates) remain unlogged within larger harvested units, was first applied commercially in 1986.
The upshot is a set of feature maps, one for each filter, showing which patches of the original image contain the sought-after element.
Aggregated retention, a form of VR in which patches of unharvested forest are retained at harvest, has been used operationally in Tasmania's public oldgrowth wet eucalypt forests since 2007.
Perkus learned to which patches of snow-scraped earth Ava craved return, a neighborhood map of invisible importances not so different, he decided, from his old paces uptown: from the magazine stand where he preferred to snag the Times, to H&H Bagels or the Jackson Hole burger mecca.
With pristine lands nationwide eyed for development, planners need to carefully select which patches of land are most "worthy" of protection.
Dwora Fried's collage-based pieces are based on her photographs, around which patches of watercolor and other visual effects swirl.
