evaluate the difference between two triangular meshes.
Implementation of the command line tool "metro" to evaluate the difference between two triangular meshes.
vcgMetro(
mesh1,
mesh2,
nSamples = 0,
nSamplesArea = 0,
vertSamp = TRUE,
edgeSamp = TRUE,
faceSamp = TRUE,
unrefVert = FALSE,
samplingType = c("SS", "MC", "SD"),
searchStruct = c("SGRID", "AABB", "OCTREE", "HGRID"),
from = 0,
to = 0,
colormeshes = FALSE,
silent = FALSE
)mesh1 |
triangular mesh (object of class 'mesh3d'). |
mesh2 |
triangular mesh (object of class 'mesh3d'). |
nSamples |
set the required number of samples if 0, this will be set to approx. 10x the face number. |
nSamplesArea |
set the required number of samples per area unit, override nSamples. |
vertSamp |
logical: if FALSE, disable vertex sampling. |
edgeSamp |
logical: if FALSE, disable edge sampling. |
faceSamp |
logical: if FALSE, disable face sampling. |
unrefVert |
logical: if FALSE, ignore unreferred vertices. |
samplingType |
set the face sampling mode. options are: SS (similar triangles sampling), SD (subdivision sampling), MC (montecarlo sampling). |
searchStruct |
set search structures to use. options are: SGIRD (static Uniform Grid), OCTREE, AABB (AxisAligned Bounding Box Tree), HGRID (Hashed Uniform Grid). |
from |
numeric: minimum value for color mapping. |
to |
numeric: maximum value for color mapping. |
colormeshes |
if TRUE, meshes with vertices colored according to distance are returned |
silent |
logical: if TRUE, output to console is suppressed. |
ForwardSampling, BackwardSampling |
lists containing information about forward (mesh1 to mesh2) and backward (mesh2 to mesh1) sampling with the following entries |
maxdist maximal Hausdorff distance
meandist mean Hausdorff distance
RMSdist RMS of the Hausdorff distances
area mesh area (of mesh1 in ForwardSampling and mesh2 in BackwardSampling)
RMSdist RMS of the Hausdorff distances
nvbsamples number of vertices sampled
nsamples number of samples
distances1, distances2 |
vectors containing vertex distances from mesh1 to mesh2 and mesh2 to mesh1. |
forward_hist, backward_hist |
Matrices tracking the sampling results |
if colormeshes == TRUE
mesh1, mesh2 |
meshes with color coded distances and an additional entry called quality containing the sampled per-vertex distances |
this is a straightforward implementation of the command line tool metro http://vcg.isti.cnr.it/vcglib/metro.html
P. Cignoni, C. Rocchini and R. Scopigno. Metro: measuring error on simplified surfaces. Computer Graphics Forum, Blackwell Publishers, vol. 17(2), June 1998, pp 167-174
if (requireNamespace("Morpho", quietly = TRUE)) {
require(Morpho)
data(humface)
data(dummyhead)
## align humface to dummyhead.mesh
humfalign <- rotmesh.onto(humface,humface.lm,dummyhead.lm)
samp <- vcgMetro(humfalign$mesh,dummyhead.mesh,faceSamp=FALSE,edgeSamp=FALSE)
## create heatmap using Morpho's meshDist function
}
## Not run:
## create custom heatmaps based on distances
mD <- meshDist(humfalign$mesh,distvec=samp$distances1)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.