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In computer vision, photo-consistency determines whether a given voxel is occupied. A voxel is considered to be photo consistent when its color appears to be similar to all the cameras that can see it. [ 1 ]
The use of the human eye as a detector led to photometric units, weighted by the eye's response characteristic. Study of the chemical effects of ultraviolet radiation led to characterization by the total dose or actinometric units expressed in photons per second. [1] Many different units of measure are used for photometric measurements.
Photometric stereo is a technique in computer vision for estimating the surface normals of objects by observing that object under different lighting conditions . It is based on the fact that the amount of light reflected by a surface is dependent on the orientation of the surface in relation to the light source and the observer. [ 1 ]
Photometria was the first work to accurately identify most fundamental photometric concepts, assemble them into a coherent system of photometric quantities, define these quantities with a precision sufficient for mathematical statements, and build from them a system of photometric principles. These concepts, quantities, and principles are still ...
In astronomy, a photometric system is a set of well-defined passbands (or optical filters), with a known sensitivity to incident radiation. The sensitivity usually depends on the optical system, detectors and filters used.
Photometric measurements can be combined with the inverse-square law to determine the luminosity of an object if its distance can be determined, or its distance if its luminosity is known. Other physical properties of an object, such as its temperature or chemical composition, may also be determined via broad or narrow-band spectrophotometry.
Photometry can refer to: . Photometry (optics), the science of measurement of visible light in terms of its perceived brightness to human vision Photometry (astronomy), the measurement of the flux or intensity of an astronomical object's electromagnetic radiation
Artist's concept of a Mars Exploration Rover, an example of an unmanned land-based vehicle.Notice the stereo cameras mounted on top of the rover. This type of stereoscopic image processing technique is used in applications such as 3D reconstruction, [3] robotic control and sensing, crowd dynamics monitoring and off-planet terrestrial rovers; for example, in mobile robot navigation, tracking ...