Resolution enhancement for video display using multi-line interpolation

摘要

The invention provides a method and apparatus for enhancing apparent image resolution by way of multi-line interpolation. A method for enhancing the resolution of low-resolution image-data includes the steps of: providing a memory [420] having independently addressable storage banks [420L,420R]; storing the low-resolution image-data [125] in the memory [420] such that low-resolution image-data defining a first low-resolution row [LR0] resides in a first of said storage banks [420R] and such that low-resolution image-data defining a second low-resolution row [LR1], adjacent to the first low-resolution row [LR0], resides in a second of said storage banks [420L]; extracting first through Nth low-resolution pixel signals [S1-S1] from the memory [420], said signals representing values of low-resolution pixels in the adjacent first and second low-resolution rows [LR0,LR1] of the low-resolution image-data [125]; and producing a high-resolution pixel signal [Hpx] from said first through Nth low-resolution pixel signals [S1-S3] in accordance with a distance-weighted algorithm.