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  2. Facial composite - Wikipedia

    en.wikipedia.org/wiki/Facial_composite

    Feature-based systems essentially rely on the selection of individual features in isolation. Individual facial features (eyes, nose, mouth, eyebrows, etc.) are selected one at a time from a large database and then electronically 'overlaid' to make the composite image.

  3. Bleach bypass - Wikipedia

    en.wikipedia.org/wiki/Bleach_bypass

    Bleach bypass, also known as skip bleach or silver retention, is a chemical effect which entails either the partial or complete skipping of the bleaching function during the processing of a color film. By doing this, the silver is retained in the emulsion along with the color dyes. The result is a black-and-white image over a color image.

  4. A New Kate Middleton Photo Dropped—And My Eye Went ... - AOL

    www.aol.com/kate-middleton-photo-dropped-eye...

    Danny Lawson - WPA Pool/Getty Images. As for why the princess made the switch, royal writer and historian Lauren Kiehna explained on The Court Jeweller that the heavy ring was "turning on her ...

  5. Red-eye effect - Wikipedia

    en.wikipedia.org/wiki/Red-eye_effect

    The red-eye effect in photography is the common appearance of red pupils in color photographs of human eyes. It occurs when using a photographic flash at low lighting or at night. When a flash passes through the eyes and rebounds at the back of the eye, it causes a red reflex in an image, turning the subject's eyes red.

  6. Hush kit - Wikipedia

    en.wikipedia.org/wiki/Hush_kit

    Hush kit for the Pratt and Whitney JT8D-1 through -17 engines Two JT4As installed on a KLM DC-8. A hush kit is an aerodynamic device used to help reduce the noise produced by older aircraft jet engines. These devices are typically installed on older turbojet and low-bypass turbofan engines, as they are much louder than later high-bypass ...

  7. Electric eye - Wikipedia

    en.wikipedia.org/wiki/Electric_eye

    Electric eye for a garage door opener. An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam.