Re: pseudo coloring of video stream

[Matthieu Bec <mbec@gemini.edu>]

Hi Emmanuel,

We use the same solution. Our selection went to yorick that allows 
processing the data and comes with a very fast graphics package. That 
let us handle the rate we get out of our server (~22kB/frame at 30+ fps)

here's a link to yorick:
http://yorick.sourceforge.net

Matthieu



On 07/17/09 14:56, Mark Rivers wrote:
> Hi Emmanuel,
>
> For my new EPICS areaDetector software the video stream is delivered via
> an EPICS waveform record.  There are several other records that describe
> the frame size, data type, color mode, etc.
>
> I've written a plugin for the ImageJ open-source Java application that
> displays this video stream.  ImageJ has lots of nice features, like the
> pseudocolor you are asking about.  It also has dynamic line profiles,
> showing the intensity of a line cut through the image data that updates
> in real time, the ability to capture frames into a 3-D buffer for
> playback as a movie or stills, etc.
>
> The EPICS + ImageJ solution can display more than 50 frames/sec at
> 640x480 resolution.
>
> Mark
>
>
> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov
> [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Emmanuel Mayssat
> Sent: Friday, July 17, 2009 1:51 PM
> To: epics
> Subject: pseudo coloring of video stream
>
> All,
>
> This is not directly related to epics, but rather to operations of
> control system.
> We are using a video stream of 640x480 black and white.
> Operators are interested in the intensity of each pixel. This
> information is used for diagnostics.
>
> The human eye being more sensitive to colors than to shade of gray, I
> would like to implement a pseudo coloring algorithm. That is filter the
> video feed (real time) and map pixel depth to a color table.
>
> Is anyone using this?
> (very common for laser commissioning I was told)
> If so, let's talk!
>
>
> Regards,
>
> Emmanuel Mayssat
> 650/793-0626


--
Matthieu Bec              Gemini Observatory
Tel: +56 51 205785        c/o AURA, Casilla 603
Fax: +56 51 205650        La Serena, Chile