Controller for system for spatially transforming images

Details Controller for system for spatially transforming images Controller for system for spatially transforming images

G - Physics

09

G

375/11

G09G 3/00 (2006.01) G05G 9/047 (2006.01) G06F 3/02 (2006.01) G06F 3/023 (2006.01) G06F 3/033 (2006.01) G06T 3/60 (2006.01) H04N 5/262 (2006.01) H04N 9/64 (2006.01)

Patent

CA 1209730

Abstract of the Disclosure A system for spatially transforming images by separate transformation of each dimension of the image is exemplified by a raster scan television system which includes for each color component a transposing memory providing a change of scan direction from horizontal to vertical, a vertical transformation system transforming in the vertical direction the vertically scanned video information, a second transposing memory coupled to receive vertically transformed video information and provide a change of scan direction from vertical back to horizontal, and a horizontal transform- ation system coupled to horizontally transform the horizon- tally scanned video signal to produce a color component output signal. The transformation system is controlled by a transform composer and factorizor which receives input commands designating X and Y pretranslations, X and Y size control, Z axis rotation angles, and X and Y post translations to produce a commanded composite transformation which is then factored into horizontal and vertical components, The transformation includes cubic spline interpolation. The system includes a control device including a joystick having three independent axes of movement for controlling the parameters of the commanded set of image transformation parameters, and a plurality of keys for receiving operator commands and defining respective different sets of image transformation parameters to which the three axes of the joystick pertain and desired operating states.

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