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2. Imaging particle analysis - Wikipedia

   en.wikipedia.org/wiki/Imaging_Particle_Analysis

   The basic process by which imaging particle analysis is carried out is as follows: A digital camera captures an image of the field of view in the optical system.; A gray scale thresholding process is used to perform image segmentation, segregating out the particles from the background, creating a binary image of each particle.

3. Particle image velocimetry - Wikipedia

   en.wikipedia.org/wiki/Particle_image_velocimetry

   Particle image velocimetry (PIV) is a non-intrusive optical flow measurement technique used to study fluid flow patterns and velocities. PIV has found widespread applications in various fields of science and engineering, including aerodynamics, combustion, oceanography, and biofluids. The development of PIV can be traced back to the early 20th ...

4. Digital image correlation and tracking - Wikipedia

   en.wikipedia.org/wiki/Digital_image_correlation...

   Digital image correlation and tracking. Digital image correlation and tracking is an optical method that employs tracking and image registration techniques for accurate 2D and 3D measurements of changes in images. This method is often used to measure full-field displacement and strains, and it is widely applied in many areas of science and ...

5. Spectroradiometer - Wikipedia

   en.wikipedia.org/wiki/Spectroradiometer

   Spectroradiometer. A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition.

6. Photogrammetry - Wikipedia

   en.wikipedia.org/wiki/Photogrammetry

   There are many variants of photogrammetry. One example is the extraction of three-dimensional measurements from two-dimensional data (i.e. images); for example, the distance between two points that lie on a plane parallel to the photographic image plane can be determined by measuring their distance on the image, if the scale of

7. Photometry (optics) - Wikipedia

   en.wikipedia.org/wiki/Photometry_(optics)

   Photometry is a branch of optics that deals with the measurement of light in terms of its perceived brightness to the human eye. [ 1] It is concerned with quantifying the amount of light that is emitted, transmitted, or received by an object or a system. In modern photometry, the radiant power at each wavelength is weighted by a luminosity ...