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

Recent posts on blogs I like:

Impact, agency, and taste

understand + work backwards from the root goal • don’t rely too much on permission or encouragement • make success inevitable • find your angle • think real hard • reflect on your thinking

via benkuhn.net April 19, 2025

Book Review: Daygame Mastery

the dark, forbidden, secret truth that women like men with boundaries

via Thing of Things April 18, 2025

Which Came First, the Chicken or the Egg?

When I thought about this question it was really hard to figure out because the way it's phrased it's essentially either a chicken just pops into existence, or an egg just pops into existence, without any parent animals involved. I thought about t…

via Lily Wise's Blog Posts April 13, 2025

more     (via openring)