While variations in black and white imagery can be very informative the number of different gray tones that the eye can separate is limited to about 20 to 30 steps out of a maximum of about 200 on a contrast scale.
Black and white satellite images.
Clouds the earth s atmosphere and the earth s surface all absorb and reflect incoming.
The visible channel senses reflected solar radiation.
Visible satellite images which look like black and white photographs are derived from the satellite signals.
These high contrast b w black and white maps are featured in our dotspotting project.
Remember that images created using different bands or wavelengths.
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Transient phenomena such as seasonal vegetation vigor and contaminant discharges can be studied by comparing images acquired at different times.
They are perfect for data mashups and exploring river meanders and coastal zones.
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Clouds usually appear white while land and water surfaces appear in shades of gray or black.
Aerial and satellite images known as remotely sensed images permit accurate mapping of land cover and make landscape features understandable on regional continental and even global scales.