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:

Book Review: White Collar Crime In Modern England

The disappointing news is that, according to the author of White Collar Crime In Modern England, modernity ended in 1929. So if you’re looking to hear about Nick Leeson or LIBOR I can’t help you.

via Thing of Things February 21, 2025

2024-25 New Year review

This is an annual post reviewing the last year and setting intentions for next year. I look over different life areas (work, health, parenting, effectiveness, travel, etc) and analyze my life tracking data. Overall this was a pretty good year. Highlights …

via Victoria Krakovna January 15, 2025

When each proud fighter brags

Remembering Max Chiswick, may his memory be a blessing.

via Icosian Reflections January 12, 2025

more     (via openring)