Tag Archive: video

Mar 15

How thinking outside of the box might save your “damaged” hard drive (and mental health)

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This is a short tale about last minute information salvage, and why you should always stay optimistic about your failed hard drive. This of course, doesn't cover up case of hard drive that is making funny noises…

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Feb 08

How to rotate a video using MEncoder and FFmpeg and live to tell the tale

Hi I'd like to share a quick tip on rotating video files. I'm always frustrated with taking videos with my phone. Single handedly it's easiest to do it when the phone is upright and not in landscape mode. But the files are always saved in landscape mode, which makes them rotated when you watch. Although …

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Dec 28

Hand gesture recognition via model fitting in energy minimization w/OpenCV

Screen shot 2010-12-25 at 10.50.41 AM

Hi Just wanted to share a thing I made - a simple 2D hand pose estimator, using a skeleton model fitting. Basically there has been a crap load of work on hand pose estimation, but I was inspired by this ancient work. The problem is setting out to find a good solution, and everything is …

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Feb 27

iPhone OS 3.x Raw data of camera frames

"where is my data?!"

Hi All It looks like it's finally here - a way to grab the raw data of the camera frames on the iPhone OS 3.x. Update: Apple officially supports this in iOS 4.x using AVFoundation, here's sample code from Apple developer. A gifted hacker named John DeWeese was nice enough to comment on a post …

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Aug 09

Near realtime face detection on the iPhone w/ OpenCV port [w/code,video]

iphone + opencv = win

Hi OpenCV is by far my favorite CV/Image processing library. When I found an OpenCV port to the iPhone, and even someone tried to get it to do face detection, I just had to try it for myself. In this post I'll try to run through the steps I took in order to get OpenCV …

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Jun 28

Augmented Reality with NyARToolkit, OpenCV & OpenGL

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Hi I have been playing around with NyARToolkit's CPP implementation in the last week, and I got some nice results. I tried to keep it as "casual" as I could and not get into the crevices of every library, instead, I wanted to get results and fast. First, NyARToolkit is a derivative of the wonderful …

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Mar 05

Qt & OpenCV combined for face detecting QWidgets

As my search for the best platform to roll-out my new face detection concept continues, I decided to give ol' Qt framework a go. I like Qt. It's cross-platform, a clear a nice API, straightforward, and remindes me somewhat of Apple's Cocoa. My intention is to get some serious face detection going on mobile devices. …

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Jan 14

OpenGL for AviSynth [Update: now w/code]

Hi I had a little project at work recently, that involved creating movie clips using AviSynth. And I was appalled by the shabbiness of existing transition plugins available freely for AviSynth, they always reminded me of 80s-like video editing... So I set out to integrate AviSynth with OpenGL to create a nice 3D transition effect …

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Nov 02

Showing video with Qt toolbox and ffmpeg libraries

I recently had to build a demo client that shows short video messages for Ubuntu environment. After checking out GTK+ I decided to go with the more natively OOP Qt toolbox (GTKmm didn't look right to me), and I think i made the right choice. So anyway, I have my video files encoded in some …

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