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In programming, and even more in embedded project, it is essential to understand what happens in your code and why it does not work as expected. But logging mechanism are sadly almost always underestimated. The leak of logs is really …

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I was for a long time searching for a real and useful project for my Arduino. I get this idea when my parents lost 2 days of work because of a power failure which disabled all fridge of their shop. …

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I really like to have souvenirs from travels, parties, friends and anything else. Today, People use to upload a picture they took to some web services such as Facebook, Picassa… Facebook is great platform to share pictures but there are …

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It’s a long time I wanted to write this comparative post, because I couldn’t find any argumented information on internet to answer to the question : Is an H264, cuda implemented, algorithme more efficient than a sequential one? In a …

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Get started with OpenVXI on Linux

OpenVXI is a powerful implementation of vxml specifications. A lot of commercials vxml tools are its improvement but the initial code is quite old, so the library compilation on a recent distribution is not so easy. In this part, we …

 

An Open Source speech processing pipeline

People are really discovering the speech recognition power with smartphones. We also all know boring vocals server for large companies support contact but it also could be a very funny and powerfull tool to improve the interactivity of a HMI. …

 

RGB to YUV transcoding thanks to cuda

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Pre-encoding Many encoders take as input an YUV video. YUV is a colorspace which is very usefull in image processing because the Y channel contains a good grayscale representation of the scene, and UV informations about colors and luminosity. So …

 

H264cuda video encoding

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As I said in a previous post, our starting point will be h264cuda, from a chinese university. I would like first to thanks people who developped this encoder for their help and their great work. They designed it for a …

 

H264 Real Time Encoding with cuda, introduction

In the context of my internship, I had to deal with a problematic of h264 encoding under real time constraints. The aim was to record all screens of a given computer, for safety reasons in air traffic management workstations. Because …