Description Usage Arguments Value Author(s) References See Also Examples
findContours
retrieves contours from a binary image using
the algorithm by Suzuki & Be (1985).
1 2 | findContours(image, mode = "external", method = "simple",
offset = c(0, 0))
|
image |
An 8-bit (8U) single-channel |
mode |
Mode of the contour retrieval algorithm. It can take the following values:
|
method |
Method for approximating the contours. It can take the following values:
|
offset |
A 2-element vector representing the offset by which every
contour point should be shifted (default: |
A list of two data frames:
"contours": a data frame with 3 columns:
"id": the contour identity (indicates the set of points belonging to the same contour).
"x": the x coordinates of the contour points.
"y": the y coordinates of the contour points.
"hierarchy": a data frame with 5 columns:
"id": the contour identity.
"after": the identity of the next contour at the same hierarchical level.
"before": the identity of the previous contour at the same hierarchical level.
"child": the identity of the first child contour.
"parent": the identity of the parent contour.
Simon Garnier, garnier@njit.edu
Suzuki, S., and Be, K. (1985). Topological structural analysis of digitized binary images by border following. Computer Vision, Graphics, and Image Processing 30, 32–46. doi:10.1016/0734-189X(85)90016-7.
Teh, C.-H., and Chin, R. T. (1989). On the detection of dominant points on digital curves. IEEE Trans. Pattern Anal. Mach. Intell. 11, 859–872. doi:10.1109/34.31447.
1 | # TODO
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