| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
I am not sure if this is the right place for an OpenCV question, but I will ask nonetheless :) I want to compute distance transform on a cv::Mat object. However, for each pixel in the matrix, along with its distance to the nearest zero pixel, I want to identify the nearest zero pixel (row/col) as well. Is there any in-built OpenCV functionality to achieve this? Thanks!
I am not sure but I think that is called the "nearest feature transform" and AFAIK it is not implemented in OpenCV.
In any case you only want to find the nearest zero feature of a few of points you can find it integrating the trajectory which start in your "working point" following the gradient of the distance transform image. On a few steps bounded by the sqrt(width*height) you will find eventually the nearest zero feature.
cv::distanceTransform() :)
DIST_LABEL_PIXEL ought to identify the nearest pixel. http://docs.opencv.org/2.4/modules/im...
Asked: 2011-12-16 12:12:44 -0600
Seen: 1,644 times
Last updated: Apr 10 '12
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
