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Module 4 Investigation 2 Log 1 What features do archaeologists look for on an image What are the seven elements used by geoarchaeologists to analyze and interpret remotely sensed images Geoarchaeologists face several issues when using remotely sensed images They must determine the location on Earth the height of objects the scale of the image based on the distance and the angle from which the image was sensed and what the images show from the size and resolution of the image These skills are similar to those used in reading a map Perhaps the most important skill is analyzing the colors and patterns on a remotely sensed image Identifying Detail on Remotely Sensed Images Seven interpretive elements help geoarchaeologists analyze an image tone shape size pattern texture shadow association Below are descriptions and examples of each element followed by several questions to help you focus on what you see TONE is the brightness or the color of objects in an image It is a very important element in distinguishing target objects Different types of imaging radar infrared photographic record different types of energy reflected or emitted by the target Whether true color as on a photograph or false color imaging a target stands out A target object is the geographic feature the geoarchaeologist is looking for like a road or a building Chaco Canyon http www ghcc msfc nasa gov archeology chaco compare html List the tones colors on this image Which tone is the brightest What do you think this bright color is showing 1 4 Module 4 Investigation 2 Log 1 What features do archaeologists look for on an image SHAPE is the general form or outline of an object in an image Shape helps distinguish an object Most human made objects have regular geometric shapes and edges such as roads buildings and agricultural fields Natural features typically have an irregular shape such as a forest or a natural lake although some natural features such as glacially formed lakes have fairly regular shorelines



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