Compiling SSIM on Mac

 November 25th, 2014
tech
If you want to examine the distortion that comes from a lossy compression algorithm, it's helpful to have a tool that's a good proxy for asking a person "how similar are these two images"? The standard algorithm for this is SSIM, but there are several implementations. I was initially using Pornel's dssim, but I wanted to compare this to Mehdi's SSIM. Mehdi's doesn't document how to compile it on a mac, so here's what worked for me:

  1. Install OpenCV
    1. Download OpenCV for linux/mac. I downloaded 2.4.9 from opencv.org/downloads.
    2. unzip ~/Downloads/opencv-2.4.9.zip
    3. cd ~/Downloads/opencv-2.4.9/
    4. mkdir build && cd build
    5. cmake -G "Unix Makefiles" ..
    6. make -j8
    7. sudo make install
  2. Download SSIM.ccp: wget http://mehdi.rabah.free.fr/SSIM/SSIM.cpp
  3. The SSIM.cpp file needs a small change: replace "#include <iostream.h>" with "#include <iostream>".
  4. Compile with: 
    g++ -I/usr/local/include/opencv \
    -L/usr/local/lib/ \
    -lopencv_core \
    -lopencv_highgui \
    -lopencv_imgproc \
    SSIM.cpp \
    -o ssim
  5. Enjoy using SSIM: ./ssim a-original.png a-modified.png

Comment via: substack

Recent posts on blogs I like:

Elixir's Last Dance

On May 18th, the contra dance band Elixir had their last gig ever. The dance was packed: there were three hundred people. It was the only dance BIDA has ever done where they sold tickets. People flew from across the country just to hear Elixir play one la…

via Lily Wise's Blog Posts June 5, 2025

Body Language For Trans People

When I first came out as trans, resources for trans people were full of advice about body language.

via Thing of Things June 2, 2025

Workshop House case study

Lauren Hoffman interviewed me about Workshop House and wrote this post about a community I’m working on building in DC.

via Home April 30, 2025

more     (via openring)