Resolution improvement from multiple images of a scene containing motion at fractional pixel values

摘要

A high-resolution image is derived from multiple low resolution images each having an array of low-resolution pixels. Motion vectors are derived at each of the unknown high-resolution grid points for each of the multiple low-resolution images. One motion vector is generated at each one of the high-resolution grid locations for each one of the multiple images. The motion vectors at the high-resolution grid points associate high-resolution grid points, whose values are unknown, with inter-pixel positions on the associated low-resolution images. Low-resolution pixels are identified that have the closest distance to each inter-pixel position. One or several of the identified low-resolution pixels having the shortest distance are used to determine the pixel value at each one of the high-resolution grid points. Pixel intensity values are then mapped into the high-resolution grid points according to the selected low-resolution pixels.