Water types include wetlands or open water. Land use shows how people use the landscape — whether for development, conservation, or mixed uses. The different types of land cover can be managed or used quite differently. Land cover can be determined by analyzing satellite and aerial imagery. Perceptions of the impact of wind energy generation in coastal communities: trust and fairness issue.
Perceptions of the impact of wind energy generation in coastal communities: impact perceptions. Perceptions of the impact of wind energy generation in coastal communities: energy policy priorities. Related Content. Search Search. This type of classification is based on the software analysis of an image without the user provided sample classes. This involves grouping of pixels with common characteristics.
The computer uses techniques to determine which pixels are related and groups them into classes. The user can specify which algorithm the software will use and the desired number of output classes but otherwise does not aid in the classification process. However, the user must have knowledge of the area being classified such as wetlands, developed areas, coniferous forests, etc. This is based on the idea that a user can select sample pixels in an image that are representative of specific classes and then direct the image processing software to use these training sites as references for the classification of all other pixels in the image.
Training sites also known as testing sets or input classes are selected based on the knowledge of the user. The user also sets the bounds for how similar other pixels must be to group them together. These bounds are often set based on the spectral characteristics of the training area, plus or minus a certain increment often based on "brightness" or strength of reflection in specific spectral bands.
The user also designates the number of classes that the image is classified into. Image segmentation is the partition and pick-up of the homogeneous regions of the image. In the results of segmentation, the consistency of gray the smoothing of boundary and the connectivity are fulfilled. Although the terms land cover and land use are often used interchangeably, their actual meanings are quite distinct.
Land cover refers to the surface cover on the ground, whether vegetation, urban infrastructure, water, bare soil or other. Identifying, delineating and mapping land cover is important for global monitoring studies, resource management, and planning activities. Identification of land cover establishes the baseline from which monitoring activities change detection can be performed, and provides the ground cover information for baseline thematic maps. Land use refers to the purpose the land serves, for example, recreation, wildlife habitat, or agriculture.
Land use applications involve both baseline mapping and subsequent monitoring, since timely information is required to know what current quantity of land is in what type of use and to identify the land use changes from year to year. This knowledge will help develop strategies to balance conservation, conflicting uses, and developmental pressures. Issues driving land use studies include the removal or disturbance of productive land, urban encroachment, and depletion of forests.
It is important to distinguish this difference between land cover and land use, and the information that can be ascertained from each. The properties measured with remote sensing techniques relate to land cover, from which land use can be inferred, particularly with ancillary data or a priori knowledge. Regional in Canada, provincial government agencies have an operational need for land cover inventory and land use monitoring, as it is within their mandate to manage the natural resources of their respective regions.
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