eplist: Conversion of matrices returned by edgepoints
In edci: Edge Detection and Clustering in Images

Description Usage Arguments Value Author(s) See Also

The matrices returned by edgepoints are converted into a list of edge points and a list of corresponding angles. This is useful for processing the results of edgepoints by oregMclust.

1	eplist(data, maxval, test = FALSE, xc = NULL, yc = NULL)

`data`	list object returned from `edgepoints`.
`maxval`	positive numbers. Critical value for deciding whether a pixel belongs to an edge or not.
`test`	optional boolean. Must be set to `TRUE` if `edgepoints` was used with `estimator = "test_mean"` or `estimator = "test_median"`. Then, `maxval` is the level of the test.
`xc, yc`	optional numerical vectors defining the coordinates of the edge points. A pixel with jump height `data[[1]][i,j]` gets the coordinates `(xc[i],yc[j])`. By default, the coordinates are assumed as equidistant within `[0,1]`, e.g., for an `(n x m)` matrix of jump heights, the pixel at position `(i,j)` gets the coordinates `(i/n,j/m)`.

A numerical matrix. The first two columns contain the coordinates of the pixels for which the detected jump height is larger than maxval (or smaller than maxval if test = TRUE). The third column contains the corresponding angles.

Tim Garlipp, TimGarlipp@gmx.de

edgepoints

edci documentation built on May 1, 2019, 7:44 p.m.