Object tracking with Kinect and FAST
This video shows the work in progress on an algorithm for tracking objects captured by a Kinect camera using the FAST framework. FAST now comes with a Kinect module which uses libfreenect2 to stream...
Category: OpenCL
OpenCL bugs
OpenCL is a great framework, however, AMD’s, NVIDIA’s and Apple’s OpenCL compilers are not. I have worked over 4 years with OpenCL and I have experienced a lot of bugs. Here I present a...
OpenCL-OpenGL interoperability problems on AMD GPUs and Linux
After experimenting with the OpenCL-OpenGL interoperability on AMD GPUs on Ubuntu Linux I got some cryptic error messages from X (see below). This happens both for the AMD APP samples like SimpleGL and my...
Level set segmentation on GPUs using OpenCL
Level sets is a mathematical method of evolving contours in Cartesian grids such as images. The method works by considering a function , called the level set function, which has one more dimension than...
GPU-based Gradient Vector Flow using OpenCL
Gradient Vector Flow (GVF) is a feature-preserving diffusion of gradient information. It was originally introduced by Xu and Prince to drive snakes, or active contours, towards edges of interest in image segmentation. However, GVF...
Gaussian Blur using OpenCL and the built-in Images/Textures
If used correctly, OpenCL images / textures can give you large speedups on GPUs. In this post, I’ll show you a very short example of how to use OpenCL to blur/smooth an image. The...
Marching Cubes implementation using OpenCL and OpenGL
In a school project I recently created a fast implementation of Marching Cubes that uses OpenCL to extract surfaces from volumetric datasets and OpenGL to render the surfaces on screen. I wrote a paper...
OpenCL C++ Utilities
I recently created a small utility library for OpenCL with C++. It consists of a set of function based on the OpenCL C++ bindings to help set up an OpenCL context, compiling OpenCL code...
Using the C++ bindings for OpenCL
While the OpenCL API is written in C, the OpenCL 1.1 specification also comes with a specification for C++ bindings. In this post I go through how to use the C++ bindings instead of...
