How to check if libpng and png++ is installed

Question

How do I check if png++ and libpng is installed in Ubuntu? I am trying to compile this code and the readme says libpng and png++ are required:

SPS-Stereo: Slanted Plane Smoothing Stereo

SPS-Stereo is a dense stereo method employing a slanted plane model. It jointly estimates a superpixel segmentation, boundry labels (such as occlusion boundaries), and a dense depth estimate from a pair of stereo images.

Citation

@inproceedings{Yamaguchi14,
author = {Koichiro Yamaguchi and David McAllester and Raquel Urtasun},
title = {Efficient Joint Segmentation, Occlusion Labeling, Stereo and Flow Estimation},
booktitle = {ECCV},
year = {2014}
}

Building SPS-Stereo

1. Prerequisites
   • libpng
   • png++
2. Building
   1. type 'cmake .'
   2. type 'make'

Usage of demo code

First, download KITTI stereo/flow dataset from KITTI Vision Benchmark Suite homepage and extract it.

Run SPS-Stereo
> ./spsstereo data_stereo_flow/training/image_0/000000_10.png data_stereo_flow/training/image_1/000000_10.png

I have followed the instructions to install both, but I am getting an error:

/home/usr/spsstereo/spsstereo_main.cpp:22:25: fatal error: png++/png.hpp: No such file or directory
 #include <png++/png.hpp>
                         ^
compilation terminated.
make[2]: *** [CMakeFiles/spsstereo.dir/spsstereo_main.o] Error 1
make[1]: *** [CMakeFiles/spsstereo.dir/all] Error 2

I'm guessing png++ is not installed. How do I check?

Answer 1

Since the above comment by @steeldriver worked for me for the same error, I'm making it an answer so people can easily find it:

In Ubuntu, the development headers and libraries are usually packaged separately from the runtime libraries: in this case you probably need libpng++-dev.