Search found 9 matches

by devlista
Tue Jul 06, 2010 4:09 pm
Forum: Non-ZoneMinder Chat
Topic: Automated Vehicle Plate Recognition
Replies: 21
Views: 28343

Interesting technical problems like this one

are what get people interested in computer science as a career. Its great to hear about them. Sort of along similar lines, face recognition is a similar use of machine vision. Here is one overview on how it works. http://cnx.org/content/m12534/latest/ "Veggie Vision" is another very interesting ...
by devlista
Tue Jul 06, 2010 3:17 pm
Forum: Hardware Queries
Topic: PTZ camera viewable but randomly moving
Replies: 6
Views: 4311

RS-485 in industrial controls/cameras

Deal Extreme has some inexpensive RS-485 dongles that cost a tiny fraction of others I've seen. On the higher end PTZ cameras, (not from personal experience, just from reading their literature) RS-485 is very common. My experience with RS485 is in lighting equipment - its used to control lighting in ...
by devlista
Tue Jul 06, 2010 3:11 pm
Forum: Hardware Queries
Topic: Ethernet
Replies: 1
Views: 1584

RFI from some piece of faulty AC-powered equipment?

First, make sure that the problem is not external to you.. I'm assuming that your other Internet connections - presumably direct to your rouuter work okay, its just the powerline ones that have these errors? If you download wireshark you can use that to verify that the powerline connection is the ...
by devlista
Tue Jul 06, 2010 1:33 pm
Forum: Non-ZoneMinder Chat
Topic: Sending SMS with cellphone on linux : gnokii
Replies: 6
Views: 14572

Curl, wget and lynx

can be useful in that situation on firewalled systems. Because almost all systems allow outbound port 80 requests. You can use lynx, for example, to request a page and put the outbound data you need in the request headers. Push rather than pull. Then send the actual email from another machine ...
by devlista
Mon Jul 05, 2010 2:36 am
Forum: Non-ZoneMinder Chat
Topic: cheap touch screens to deploy around house
Replies: 3
Views: 3953

Why not use VNC over the network?

You can have multiple clients connecting to the same VNC virtual screen at the same time, and its basically as if they are all on the same screen at the same time; the touch screens can all display and interact with the same screen at the same time. That has a lot going for it. If you had a fast ...
by devlista
Sun Jul 04, 2010 3:58 pm
Forum: Hardware Queries
Topic: EasyCap USB
Replies: 6
Views: 30449

Easycap USB video framegrabber

Google for Easycap DC60, Easycap DC60++ or XP STK1150.

For example http://ubuntuforums.org/showthread.php?p=8988921
by devlista
Sun Jul 04, 2010 3:25 pm
Forum: Hardware Queries
Topic: PTZ camera viewable but randomly moving
Replies: 6
Views: 4311

some of them use RS485

nt
by devlista
Sun Jul 04, 2010 3:03 pm
Forum: Hardware Queries
Topic: Real world differences between CCD, CMOS, Sharp, Sony cams?
Replies: 1
Views: 1961

Real world differences between CCD, CMOS, Sharp, Sony cams?

I'm on a very tight budget and pricing indoor composite cameras and I'm wondering, with vendors who don't offer sample shots, how can you tell the build and image quality? There seem to be a really bewildering variety of choices. In the past I assumed CCD was almost always better but now people tell ...