Coloring a black and white signal using motion detection

Details Coloring a black and white signal using motion detection Coloring a black and white signal using motion detection

H - Electricity

04

N

352/18, 350/38

H04N 9/74 (2006.01) H04N 9/43 (2006.01)

Patent

CA 1291260

ROGERS, BERESKIN & PARR Inventors: Wilson Markle and Brian Hunt Title: Coloring a Black and White Signal Using Motion Detection. ABSTRACT OF THE INVENTION A method and apparatus for coloring a black and white film. The film is converted to video tape and the locations of edges of moving objects in frames of the video signal are used to develop a motion indicator key. The motion indicator key is used to reduce noise in the video signal without smearing motion and is used to assign colors to the black and white signal. For each scene of the black and white film, a color mask is produced for one frame. The adjacent frame is then colored the same as the initial frame except where motion is indicated. Where motion is indicated, a selected process assigns colors, for example based on direction of movement or grey levels of adjacent pixels. The new color mask thus produced is used as a reference for coloring the next frame. In this way the whole film may be colored, scene by scene. The color mask produced may then be combined with the black and white video signal to produce a colored video signal.

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