It allows for upgrading the quality of vector-based maps and plans by using raster pictures to update and refine errant vector data, or to create new vector elements.
For each EVB parameter, p, an iterative search for the value that minimizes Θ p, r) is carried out either by using a simplified Newton Raphson approach or by refining the vector of EVB parameters, p, in the optimal steepest descent approach [119].
In the two works of Ye et al.[21, 22], a partially decoded WZF (using the parity bits of the DC band) allows the detection of suspicious vectors and to refine the motion vector fields.
The estimated a*, b*, and c* vectors were then refined by identifying parallel difference vectors derived from the original selected spots with lengths that were multiples of the unit cell lengths.
For this reason, the selected motion vector is refined by several stages.
The algorithm then refines the motion vector in a small search range near the initial motion vector.
In [25], motion vectors are refined based on bitplane decoding of the reconstructed WZ frame as well as previously decoded key frames.
A two-stage algorithm is derived which selects and refines the basis vector set achieving a locally optimal model.
At each iteration the current estimate of the coefficient vector x is refined by selecting one more atom to yield a substantial improvement of the signal approximation.
International Journal of Solids and Structures 39, 5173 5184.] is refined by introducing the generalized displacement vector and generalized stress vectors as the fundamental variables in which appropriate electrical variables are included.
After refining the motion vectors in different stages, the absolute horizontal values of the refined motion vectors are used to approximate initial depth values.
