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  2. Human visual system model - Wikipedia

    en.wikipedia.org/wiki/Human_visual_system_model

    A human visual system model (HVS model) is used by image processing, video processing and computer vision experts to deal with biological and psychological processes that are not yet fully understood.

  3. Flat-four engine - Wikipedia

    en.wikipedia.org/wiki/Flat-four_engine

    This engine is water-cooled, has gasoline direct injection, produces 147 kW (197 hp) and has a displacement of 2.0 L (122 cu in). The 2016 Porsche Boxster/Cayman (982) mid-engined sports cars downsized from a naturally aspirated flat-six engine to a turbocharged flat-four engine, Porsche's first flat-four since the mid-1970s.

  4. List of McDonnell Douglas F-4 Phantom II variants - Wikipedia

    en.wikipedia.org/wiki/List_of_McDonnell_Douglas...

    An XF4H-1 1959. F-4Bs from VF-213, 1967. XF4H-1 Two prototypes for the United States Navy, first flown 1958. F4H-1F (F-4A) Two-seat all-weather carrier-based fighter for the US Navy, J79-GE-2 and -2A engines with 16,100 lbf (71.6 kN) of afterburner thrust each.

  5. Formula 4S Powerboat World Championship - Wikipedia

    en.wikipedia.org/wiki/Formula_4S_Powerboat_World...

    This class was designed as an ecological alternative to UIMS750, UIMS550, UIM F4 and UIM F3 classes. Before getting World Championship status this class was called SL-60. First races were held in Scandinavia in 2005. In year 2009 this class was chosen as a base for ADAC Masters [1] international series conducted in Germany. In year 2010 class ...

  6. GER Class M15 - Wikipedia

    en.wikipedia.org/wiki/GER_Class_M15

    The GER Class M15 was a class of 160 2-4-2 T steam locomotives designed by Thomas William Worsdell and built for the Great Eastern Railway between 1884 and 1909. The original (F4) class of locomotives were fitted with Joy valve gear which was notoriously difficult to 'set'.

  7. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    An extensible series, covering various special threads. 2. Near side: The drawing notations "near side" and "far side" tell the reader which side of the part a feature is on, in occasional contexts where that fact is not communicated using the rules of projection alone. Contexts of usage are rather limited. See "far side" for examples. NSCM

  8. Comparison of color models in computer graphics - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_color_models...

    As of 2011, most graphic cards define pixel values in terms of the colors red, green, and blue. The typical range of intensity values for each color, 0–255, is based on taking a binary number with 32 bits and breaking it up into four bytes of 8 bits each. 8 bits can hold a value from 0 to 255.

  9. Formula 4 - Wikipedia

    en.wikipedia.org/wiki/Formula_4

    Each championship uses a single make of engine, with the regulations mandating a 1,600 cc (1.6 L) capacity and capping the maximum power output at 160 bhp (119.3 kW), higher than Formula Ford and lower than Formula Renault. The engines are equalised so that no one Formula 4 championship is faster than the others, with the long-term intention ...