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  2. Camera matrix - Wikipedia

    en.wikipedia.org/wiki/Camera_matrix

    This type of camera matrix is referred to as a normalized camera matrix, it assumes focal length = 1 and that image coordinates are measured in a coordinate system where the origin is located at the intersection between axis X3 and the image plane and has the same units as the 3D coordinate system.

  3. Clip coordinates - Wikipedia

    en.wikipedia.org/wiki/Clip_coordinates

    The clip coordinate system is a homogeneous coordinate system in the graphics pipeline that is used for clipping. [ 1 ] Objects' coordinates are transformed via a projection transformation into clip coordinates, at which point it may be efficiently determined on an object-by-object basis which portions of the objects will be visible to the user.

  4. Normalized frequency (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Normalized_frequency...

    Therefore, the normalized frequency unit is important when converting normalized results into physical units. Example of plotting samples of a frequency distribution in the unit "bins", which are integer values. A scale factor of 0.7812 converts a bin number into the corresponding physical unit (hertz).

  5. ISO 6709 - Wikipedia

    en.wikipedia.org/wiki/ISO_6709

    ISO 6709, Standard representation of geographic point location by coordinates, is the international standard for representation of latitude, longitude and altitude for geographic point locations. The first edition ( ISO 6709:1983 ) was developed by ISO/IEC JTC 1 /SC 32.

  6. Smith chart - Wikipedia

    en.wikipedia.org/wiki/Smith_chart

    The SI unit of impedance is the ohm with the symbol of the upper case Greek letter omega (Ω) and the SI unit for admittance is the siemens with the symbol of an upper case letter S. Normalised impedance and normalised admittance are dimensionless. Actual impedances and admittances must be normalised before using them on a Smith chart.

  7. Barycentric coordinate system - Wikipedia

    en.wikipedia.org/wiki/Barycentric_coordinate_system

    These specific barycentric coordinates are called normalized or absolute barycentric coordinates. [7] Sometimes, they are also called affine coordinates, although this term refers commonly to a slightly different concept. Sometimes, it is the normalized barycentric coordinates that are called barycentric coordinates.

  8. Normal coordinates - Wikipedia

    en.wikipedia.org/wiki/Normal_coordinates

    These are the coordinates on M obtained by introducing the standard spherical coordinate system on the Euclidean space T p M. That is, one introduces on T p M the standard spherical coordinate system (r,φ) where r ≥ 0 is the radial parameter and φ = (φ 1,...,φ n−1) is a parameterization of the (n−1)-sphere.

  9. Spherical measure - Wikipedia

    en.wikipedia.org/wiki/Spherical_measure

    There are several ways to define spherical measure. One way is to use the usual "round" or "arclength" metric ρ n on S n; that is, for points x and y in S n, ρ n (x, y) is defined to be the (Euclidean) angle that they subtend at the centre of the sphere (the origin of R n+1).