Linearly-interpolated re-projection

In section constant interpolation is used for reprojection. For a better right-eye image, an algorithm for linear interpolation is given as follows:

For each n

1. process the nth sampling point on the most right left-eye ray. Save Color, opacity, the affected x-coordinate and the weight(???? arbitrary????) in the nth element of a 1D array RAY.
2. For each remaining left-eye ray from right to left do
   1. For the nth sampling point on the ray generate the right-eye sampling values as

      

   2. Reproject the right-eye sampling points onto RAY[n].pixel.
   3. Set