Spatial and temporal resolution

Temporal resolution (TR) refers to the discrete resolution of a measurement with respect to time. An imaging instrument can be characterized by its spatial resolution , contrast resolution , and temporal resolution. The capabilities of computed tomography (CT) relative to other cardiac imaging modalities can be understood in these terms. Technically, this is generally written as “spatio-temporal resolution,” and it just means looking at the resolution of an image or other data in term of both its spatial resolution (how much detail can be resolved per unit of distance) and tempora. CT-scanning has spatial resolution a little smaller than a millimeter.

A standard video camera records at frames per second - or an interval of 0. The need for high temporal and spatial resolution precipitation data for water management models and mathematical analyses has been discussed in several studies. The simple design and affordability of rain gauges make them particularly suited for application outside the traditional monitoring environment. Electronic sensors such as. Sensors can trade spatial resolution for temporal resolution , but it is difficult to maximum both. Sensors that have a high spatial resolution cover a smaller area then a sensor with the same number of pixels but with a lower spatial resolution.

With a smaller field of view it takes longer to cover the same area, thus as spatial resolution. And in terms of the temporal characterization, is the value with respect to time? What does it mean and. The concept of temporal resolution is fundamental to cardiac CT and MRI, in which a rapidly beating heart is imaged over the order of milliseconds into multiple frame-captures. Among the different brain imaging techniques, electroencephalography (EEG) is classically considered as having an excellent temporal resolution , but a poor spatial one.

Resolutions of Remote Sensing 1. Spectral (what colors – bands) 3. Spatial (what area and how detailed) 2. The ability to resolve, or separate, small details is one way of. Although high spatial resolution images are essential in medical diagnosis and image analysis, high temporal resolution is equally important in applications of dynamic contrast-enhanced MRI or. This chapter addresses the limitations imposed by the functional magnetic resonance imaging (fMRI) technique and suggests some strategies to improve spatial and temporal resolution.

It begins with the discussion of limits to spatial resolution in fMRI and shows that there are a number of factors to consider in achieving high spatial resolution. Temporal summation occurs when the time duration is sufficiently long, and frequency of rises in potentials are high enough to reach the action potential. Signal-to-noise ratio (SNR) is a reflection of signal intensity with reference to the background noise.

The most common characterization of different satellite remote sensing (RS) systems from the systems diverse spatial , temporal and spectral resolutions. The spatial resolution specifies the pixel size of satellite images covering the earth surface. High spatial resolution : 0. Low spatial resolution : 30.

Before illustrating these. Progress in silicon nanowire field-effect transistors have demonstrated sub millisecond temporal resolution , however spatial resolution may ultimately be limited by the distance between adjacent. Temporal is a fancy term referring to comparisons made with respect to the passage of time. If a process is temporally extende it means that it happens over a period of time.

This feature is not available right now. Please try again later. For example, Landsat has meter spatial resolution. In other words, an image with meter spatial resolution means that a single pixel represents an area on the ground that is meters across. AbstractHummingbirds are an emerging model for studies of the visual guidance of flight.

However, basic properties of their visual systems, such as spatial and temporal visual resolution , have not been characterized. In addition to spatial , spectral, and radiometric resolution , the concept of temporal resolution is also important to consider in a remote sensing system. We alluded to this idea in section 2. Low resolution will give either fuzzy edges, or a pixelly appearance to the image.

In MRI, spatial resolution is defined by the size of the imaging voxels.