Resolution
The size of each cell or pixel in a raster dataset, determining the level of spatial detail captured. Higher resolution means finer detail.
How is resolution defined?
In remote sensing and GIS, resolution is the amount of detail that an image or dataset offers. It establishes the degree to which the data accurately depicts radiometric, temporal, spectral, or geographical features. There are various resolution types:
The size of every pixel or cell in a raster dataset is described by its spatial resolution. A 10-meter spatial resolution, for instance, indicates that each pixel on the ground covers a 10 m x 10 m region. Finer features are captured at higher spatial resolutions.
The term "spectral resolution" describes a sensor's capacity to discriminate between various light wavelengths. The spectral resolution increases with the number of spectral bands and decreases with their range.
Temporal Resolution: Shows the frequency of data collection for the same place. Better tracking of changes throughout time is made possible by higher temporal resolution.
The term "radiometric resolution," which is typically expressed in terms of the number of bits per pixel (e.g., 8-bit, 16-bit), describes how accurately a sensor can measure variations in energy or reflectance.
In conclusion, the amount of detail you can view or examine in spatial data depends on the resolution.
Related Keywords
Spatial resolution, as used in GIS, is the degree of detail in a raster dataset or image, often determined by the size of each ground pixel. While lower resolution covers wider regions with less information, higher spatial resolution results in smaller pixel sizes, allowing for finer detail and more accurate mapping. It plays a crucial role in assessing the caliber and usefulness of geographic data.
The detail of recorded data, encompassing spatial, spectral, radiometric, and temporal components that affect image quality and utility, is referred to as remote sensing resolution.
The size of each cell or pixel in a raster dataset defines the amount of detail it can convey; this is known as raster data resolution. Smaller cells and more detailed information are associated with higher resolution, whereas larger cells and more broad patterns are associated with lesser resolution.
The amount of detail that a satellite sensor can record is referred to as satellite picture resolution. It shows the size of the smallest thing that can be found on the ground and is often expressed in meters. While lesser resolution (e.g., 10–1000 m) catches wider regions with less detail, higher resolution (e.g., 30 cm–1 m) produces sharper, more detailed images.