Probability of a MRZ Checksum Failure
The machine readable zone (MRZ) of identity documents has various checksums which are intended to verify that a readout by a machine is actually correct. But how likely is it that this mechanism fails?
How to Efficiently Retrieve Video Frames from MinIO using pyAV
A video is made up of frames, but retrieving a specific frame from a video file is not straight forward. What if the video file is stored remotely?
Just Put all Your Sh!t in Docker Images 🐋
Docker is awesome. It is even more awesome if you embrace it. So why stop at using it for production images?
Notes on Homographies
This is writeup of some formulas that proved to be helpful understanding and working with homographies.
Quick and Dirty Gradle Task for Android Projects Using Swig
Swig is really great to wrap native projects. I have been working on wrapping native code in an Android app, figuring out how to run swig as part of the gradle build pipeline took me way too many google queries.
Efficient Triangle Intersection in 3D Scences
Building a rendering engine comes with a lot of hurdles. One of the problems that might pop out of nowhere (depending on your preparation) is handling meshes.
Using Spring Dynamics ODE for Animation Interpolation (Rebuilding Facebook Rebound)
Rebound is an open-source project by Facebook. It is used to control the course of animations. In case you are familiar with Android, you might know that Android provides several Interpolator classes (AccelerateInterpolator, DecelerateInterpolator, ...) to handle that task. While most of these provide a rather simple course of animation, Facebook's Rebound is based on spring dynamics which is not trivial to implement. This article describes my attempt to reverse engineer the Rebound library.Visualizing Sphere Integrals
You know that feeling when you have been using some rule blindly forever and one day you finally spend the time to figure out where this rule comes from? Below is my effort to visualize the integrals which lead to the formulas for surface area and volume of spheres.