MTFlens

MITRE developed its MTF application to compute the Modulation Transfer Function of an imaging system using a sinewave target*, or compute the Contrast Transfer Function (CTF) using a bar target. Aliasing is detected and quantified and, for a sinewave, the input/output relation is established.

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3 days ago — polarization in American English · a. the condition of electromagnetic or other waves in which the transverse motion or field of the wave is ...

Image mtfcurve

microscopes, also called light microscopes, work like magnifying glasses. They use lenses, which are curved pieces of glass or plastic that bend light. The ...

Mar 16, 2022 — Sad to say the last time was at the Edmund store, most of the military optics were gone. (1980s) So now you have to look towards items ...

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Image mtfformula

MITRE originally developed the IQM freeware application to support the US government's needs in image reconnaissance/surveillance and interpretation/exploitation. IQM correlates with NIIRS*, the traditional visual image interpretability rating scale used for such purposes. IQM is structured such that the user can tailor it for quality evaluation of other image types, e.g., pictorial, medical, image compression studies, etc.

Modulation transfer functionimageprocessing

MITRE modified existing code to compute the Spatial Frequency Response (SFR) using an edge target, following procedures defined in ISO-12233*. The SFR equals the MTF of an imaging system under certain conditions.

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Aims & Scope ... The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared' ...

MTF imagequality

Opal diffuser films are milky white (opal white) and contain a scattering additive specially developed for this application to ensure uniform light diffusion.

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MITRE developed its Image Quality Measure (IQM) application to directly measure the quality of an arbitrary image, i.e., it does not require imaging a specific target, constant scene, or reference image. IQM (overview.pdf) is computed from the image's spatial frequency power spectrum.

MTFcurve

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Image mtfgraph

Bi-Concave (Double-Concave) lenses have equal radius of curvature on both sides of the lens and function similarly to plano-concave lenses by causing collimated incident light to diverge. Bi-Concave lenses are generally used to expand light or increase focal length in existing systems, such as beam expanders and projection systems, and are the best choice when the object and image are at absolute conjugate ratios closer to 1:1 with a converging input beam. N-BK7 lenses are a great choice for most general purpose visible and NIR applications, featuring high homogeneity and low bubble and inclusion content. UV Fused Silica lenses are ideal for UV or higher energy applications, combining a very low thermal expansion coefficient and excellent transmittance down to 195 nm.

MITRE developed the MTF, SFR, and IQF freeware applications to support performance analysis of fingerprint capture devices and printers for FBI product certifications, for the FBI's Certified Products List* and the US government's Personal Identity Verification (PIV*) program. Corresponding to these certifications are available spec and test procedures [3.3MB]. These applications support development of devices enabling high accuracy examination, matching, and identification of fingerprints and interoperability across the forensics/law enforcement community.

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Bi-Concave (Double-Concave) lenses have equal radius of curvature on both sides of the lens and function similarly to plano-concave lenses by causing collimated incident light to diverge. Bi-Concave lenses are generally used to expand light or increase focal length in existing systems, such as beam expanders and projection systems, and are the best choice when the object and image are at absolute conjugate ratios closer to 1:1 with a converging input beam. N-BK7 lenses are a great choice for most general purpose visible and NIR applications, featuring high homogeneity and low bubble and inclusion content. UV Fused Silica lenses are ideal for UV or higher energy applications, combining a very low thermal expansion coefficient and excellent transmittance down to 195 nm.