What is a remote survey analysis?

Long -distance survey analysis is the interpretation of images taken from distant places, such as on board the aircraft or satellite in the Earth's orbit. Different imaging systems can view surfaces at different wavelengths of the light spectrum. The following analysis is generally used to view the image differently than the human eye. In the case of a remote survey, hyperspectral imaging is sometimes part of the analysis of multiple bandwidth in the figure. Images can be displayed as a photo type, but digital image processing is often part of a remote exploration analysis as computers can interpret data quickly. Water and vegetation are often distinguished to the naked eye, but in cases of floods and changes in forests, visible light is sometimes not enough. Infrared image of a forest or other area of ​​vegetation can help assess its health. Over time, scientists can monitor the deforestation analysis of the remote exploration of images taken at different times. Can also monitor the state of the floodplain and even determine the sweatEncal for landslides in hilly terrain.

radar images are often used to monitor clouds at night. With radar, scientists can also analyze the remote exploration of ground movement to provide valuable information about the earthquake and diving areas of the land. Computer programs are often able to analyze data from images taken at different spectral wavelengths. The same multispectral analysis can also be applied to medicine, imaging cells and biological tissue to diagnose infections and diseases. Such laboratory analysis can be used in conjunction with magnetic resonance scanning (MRI) and X -ray.

tools called spectrometers often help to analyze remote survey. These tools are generally capable of hyperspectral imaging, which means ovrázky f are scanned at different wavelengths. Such images are characterizedtheir physical width and how far they extend. It is also possible to measure reflected energy, which determines the spectral response of the object. Interpretation of such data usually requires knowing how certain functions emit each wavelength of light.

Computers

Computers must usually be able to identify objects such as vehicles, bridges or water to provide a reasonable distance survey analysis. Measurement techniques generally have to distinguish one object from another. When processing a digital image, each pixel in the picture is represented numerically as part of an automatic remote survey analysis. Images can also be viewed in detail on the computer screen, either in black and white or color.