What is a spatial resolution meaning?

In other words, the spatial resolution is defined as the measurement of a small object, which is resolved by the sensor, or the ground area imaged for the instantaneous field of view (IFOV) of the sensor, or the linear dimension on the ground represented by each pixel.

What is spatial resolution example?

Spatial Resolution refers to the size of the smallest feature that can be detected by a satellite sensor or displayed in a satellite image. For example, a spatial resolution of 250m means that one pixel represents an area 250 by 250 meters on the ground.

What is spatial resolution in physics?

Spatial resolution refers to the ability of an imaging modality to differentiate two adjacent structures as being distinct from one another. Spatial resolution is expressed in line pairs per mm (lp mm).

What is meant by spatial resolution in mapping?

A measure of the accuracy or detail of a graphic display, expressed as dots per inch, pixels per line, lines per millimeter, etc. Resolution is the accuracy at which a given map scale can depict the location and shape of map features; the larger the map scale, the higher the possible resolution.

How do you do spatial resolution?

The size of the area viewed is determined by multiplying the IFOV by the distance from the ground to the sensor (C). This area on the ground is called the resolution cell and determines a sensor’s maximum spatial resolution.

What is the difference between high and low spatial resolution?

Low and high spatial resolution The more pixels are included in a remote sensing image of a certain area, the higher the spatial resolution meaning the more details can be observed. You can clearly distinguish between a higher spatial resolution of 30 metres and a lower spatial resolution of 300 metres.

What is the best spatial resolution?

The finest resolution as of now is 30cm provided by very high-resolution commercial satellites.

• – Low resolution: over 60m/pixel.
• – Medium resolution: 10 ‒ 30m/pixel.
• – High to very high resolution: 30cm ‒ 5m/pixel.

Which are the 4 types of raster resolution?

When working with imaged raster data, there are four types of resolution you might be concerned with: spatial resolution, spectral resolution, temporal resolution, and radiometric resolution.

What is the difference between spatial resolution and intensity resolution?

Intensity of resolution means the number of pixels per square inch, which determines the clarity or sharpness of an image. Spatial resolution refers to the number of pixels used in making an image. Images with a higher number of pixels per square inch are sharp and hence said to have a higher Spatial resolution.

What does 50cm resolution mean?

In remote sensing, spatial resolution refers to the size of the smallest possible feature that can be displayed in a satellite image. A satellite with a resolution of 50cm per pixel takes clearer images showing finer details than a 10m per pixel resolution satellite.

Which satellite has the best spatial resolution?

GeoEye-1 satellite
The GeoEye-1 satellite has the high resolution imaging system and is able to collect images with a ground resolution of 0.41 meters (16 inches) in the panchromatic or black and white mode.

What is the spatial resolution of Google Earth?

Imagery resolution ranges from 15 meters of resolution to 15 centimeters. For much of the Earth, Google Earth uses digital elevation model data collected by NASA’s Shuttle Radar Topography Mission.

Which imaging modality has a higher spatial resolution?

X-ray imaging has higher spatial resolution than other modalities such as CT, MRI, SPECT, PET or ultrasound. In this post we present the general framework for understanding and measuring spatial resolution.

What is the difference between spacial and spatial?

Spacial is an alternative form of spatial. As adjectives the difference between spacial and spatial. is that spacial is (spatial) while spatial is of or pertaining to space.

What is CT contrast resolution?

‘Contrast Resolution’. When referring to computed tomography (CT), contrast is defined as a difference in Hounsfield units between structures. The measurement of contrast resolution in CT imaging involves determining how easy it is to differentiate tissues whose CT density is similar to that of their surroundings.

What is spatial resolution in remote sensing?

Spatial resolution is a key characteristic in remote sensing, where it’s often used to refer to the size of pixels within an acquired image.