### Summary

This paper discusses an image morphing technique called field morphing. This method permits the user to specify correspondences between two images in terms of line segments. This allows for intuitive, high-level control of how the images are morphed in to each other.

The general method is performed by iterating over every pixel in the destination image and looking at its position relative to the line. The pixel is then mapped to a corresponding pixel in the source image as a way of mapping features of one image on to the other. This is naturally extended to more than one line by using a weighted sum of all lines. The distance from a pixel in the image to the line determines how much of an influence a particular line has on the pixel during morphing.

The disadvantages to this method seem to be that it is slow, and that lines have a global effect, i.e. a line will effect every pixel in the image. It is hoped that since the influence of a line on a pixel is related to a pixel's distance from the line, effects will be primarily local. However, this means that sometimes the method will produce undesirable results requiring the user to specify more lines to achieve the desired morph.