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2015-05-23 13:53:18 -0500 asked a question Opencv4tegra installed, but ros can't compile and GPU functions

I've installed CUDA toolkit and libopencv4tegra, but when compiling a simple test program which just changes a frame to black and white using gpu I get:

undefined reference to cv::gpu::Stream::Null() and undefined reference to cv::gpu::cvtcolor(cv::gpu::gpumat......);

The weird thing is the cv::gpu::gpumat.upload(cv::Mat) function and download functions are compiling but not any others.

I really will need gpu acceleration for my project. How can I have ros compile these functions?

I assume it is some modifications in cmakelists.txt.

Also I have not installed cv_bridge yet just ros bare bones, so the only opencv installation should be libopencv4tegra

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2015-05-13 12:35:20 -0500 commented answer a cheap Laser / IR solution for 2D mapping?

I have tried the rplidar with hector slam it works great!

2015-05-12 23:58:00 -0500 asked a question Speed up hector_exploration_planner?

I am running exploration on a Raspberry Pi 2 along with a few other programs. However, no matter what I try the doExploration function takes 20 seconds to complete. Is this really the case or is there a setting that I am missing somewhere.

Also I am getting this error constantly:

Costmap2DROS transform timeout. Current time: 1431482795.3188, global_pose stamp: 1431482795.0172, tolerance: 0.3000

Could not get robot pose, cancelling reconfiguration

Please is there a way to speed up exploration and is this error slowing it.

Also thanks so much to team hector and Stefan.