Resolution enhancement for video display using multi-line interpolation

An interactive system having an interactive loop comprised of:

• high-resolution video display device for displaying in real-time an animated high resolution image;
• interactive input means, positioned for operation by an observer of the high-resolution image, for producing real-time response signals representing real-time responses of the observer to the high-resolution image;
• memory means for storing low-resolution image data, the low-resolution image data consisting of an entire displayable frame of an animated image to be seen by the observer;
• an image-modifying processor, operatively coupled to the memory means and responsive to the real-time response signals, for modifying the low-resolution image data in response to the real-time responses of the observer to the high-resolution image;
• interpolating means, operatively coupled to the memory means and to the high-resolution video display device, for interpolating the stored low-resolution image data to generate a non-stored high-resolution signal for displaying a high-resolution image having a higher resolution than the low-resolution image data, said interpolating means:
• dividing each pixel in said low-resolution image data into a plurality of subpositions, each subposition corresponding to a pixel of said high-resolution image and
• providing as an intensity of said pixel of said high resolution image a weighted average of intensities of a plurality of pixels of said low-resolution image data, wherein in said weighted average, said intensity of a pixel of said low-resolution image data being weighted by a function of the distance between the center of said pixel of said high resolution and the center of said pixel of said low-resolution image data.