Patent ID: 6188383
Filing Date: 2001-02-13
Classification: G06T,H04N

Abstract:
A method for converting an input image having a first resolution to an output image having a second different resolution, comprising the steps of:accepting an input image signal in the form of a modulated video signal;converting the input image signal from the modulated video signal to a single frame of an input image;accepting from a first instruction signal Port an initial vertical number of pixels corresponding to a number of vertical pixels of the input image and a final vertical number of pixels corresponding to a number of vertical pixels of an output image;accepting from a second instruction signal port an initial horizontal number of pixels corresponding to a number of horizontal pixels of the input image and an final horizontal number of pixels corresponding to a number of horizontal pixels of the output image;generating a common-coordinate system common to said input image and said output image by relating a number of pixels of said input image to a number of pixels of said output image, said common-coordinate system comprising a first vertical axis equaling the initial vertical number of pixels and a second vertical axis equaling the final vertical number of pixels and a first horizontal axis equal to the initial horizontal number of pixels and a second horizontal axis equal to the final horizontal number of pixels;calculating absolute-coordinates of said pixels of said input image and said pixels of said output image from said common-coordinate system,calculating values of said pixels of said output image from values of corresponding said pixels of said input image from said absolute-coordinates of said output image,forming an output image having the final vertical and final horizontal number of pixels, andconverting the output image to an output image video signal for driving a matrix display device.