초록 ▼

An image resolution converting method, apparatus and computer program converts an input image having varying resolutions to an output image having varying resolutions, using only a single circuit. The method generates a common-coordinate system common to the input image and the output image by relat

An image resolution converting method, apparatus and computer program converts an input image having varying resolutions to an output image having varying resolutions, using only a single circuit. The method generates a common-coordinate system common to the input image and the output image by relating the number of pixels of the input image to the number of pixels of the output image, calculates an absolute-coordinate of the pixel of the input image and the pixel of the output image, and calculates a pixel value of the output image from the value of a corresponding pixel of the input image using the absolute-coordinates of the output image. A vertical common multiple and horizontal common multiple technique allow integral expression of how far an arbitrary line/dot of the matrix display device is from each of the lines/dots of the input image signals. Using linear interpolation, it is possible to display input image signals having varying resolutions on a matrix display device having a fixed resolution, without lacking pixel information which should be displayed on the matrix display device and further to display the input images scaled up and down on the matrix display device.

대표청구항 ▼

[ What is claimed is:] [1.] 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 v

[ What is claimed is:] [1.] 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.