OS X build fixes
Tweak OS X compilation
openni_pcd_recorder: Fix memory size calculation for 32-bit system with >4GB RAM.

Systems with e.g. a Linux PAE kernel can have more than 4GB RAM, which
means the size should always be calculated using 64-bit integers.  The
memory available for buffering, however, must be addressable by a
std::size_t.
Added a curvature parameter to region_3d

Added a curvature parameter to region_3d

Rebase test

Update region_3d.h

Update region_3d.h

Update region_3d.h
Document the fields in pcl::PCLHeader.

Especially the interpretation of the timestamp field is important.
Merge pull request #684 from j-oberlaender/doc_improvements

Document the fields in pcl::PCLHeader.
Update pcl_visualizer.hpp

Changed calls to update mesh structures from SetStrips() (works only with triangle strips) to SetPolys(), which correctly renders polygons regardless of the number of vertices.
Merge pull request #686 from jakobwilm/patch-1

Update pcl_visualizer.hpp
Merge pull request #676 from j-oberlaender/master

openni_pcd_recorder: Fix memory size calculation for 32-bit system with ...
Merge pull request #658 from eile/master

OS X build fixes
Merge pull request #653 from EduFdez/master

Added a curvature parameter to region_3d. This parameter characterizes the mean curvature of the 3D region.
convert color and depth image to a pcd file

Use pcl_png2pcd to convert color and depth image to a pcd file.
Example:
  pcl_png2pcd color.png depth.png out.pcd --intensity_type FLOAT
Tested with RGB-D dataset from
http://rgbd-dataset.cs.washington.edu/dataset/rgbd-scenes
Merge pull request #680 from xiangxw/powerful_png2pcd

convert color and depth image to a pcd file