Article View: sci.electronics.design
Article #2003Re: Using RSSI to locate an object
From: Alex Gibson
Date: Thu, 22 Mar 2007 10:31
Date: Thu, 22 Mar 2007 10:31
42 lines
3152 bytes
3152 bytes
"Josh916" <jkacen@gmail.com> wrote in message news:1174471734.149355.182920@n59g2000hsh.googlegroups.com... > On Mar 21, 8:46 pm, "David L. Jones" <altz...@gmail.com> wrote: >> >> > What does everyone think about the other technologies mentioned above? >> >> You are wasting your time, visual object recognition is the best >> method in this particular instance. All the other methods (RSSI, >> acoustic, and IR) require a transmitter on the boat and multiple >> receivers. Visual recognition on the other hand doesn't require any >> transmitter, will work with almost any size or type of object, is >> simple, fairly accurate, will most likely only require one receiver, >> and reduces the problem to essentially a software solution. >> >> The decision is blindingly obvious. >> >> Dave.- Hide quoted text - >> >> - Show quoted text - > > Thanks for everyones help, especially David Jones, I will be going > with the visual recognition. It was originally my first choice though, > as you do, I wanted to exhaust all possible options before finalising > the decision as you never know there might of been an easier, more > efficient way. > > Josh Look at opencv , it has most of the functions you need , its free and os available on linux , mac and windows. Use it with c , c++ or python. Could even do object tracking fairly easily. Make sure you boat has a nice bright colour that stands out wll. Once you have the detection working , then you can change the colour to one with a lot less contrast to see how well your solution works. Alex
Technical Details
Message-ID:
<56f4dkF27vf9eU1@mid.individual.net>Path:
arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed00.sul.t-online.de!t-online.de!news-lei1.dfn.de!news1.uni-leipzig.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mailReferences:
<1174348989.871006.52080@n76g2000hsh.googlegroups.com> <1174401978_523@sp6iad.superfeed.net> <1174437980.626142.221850@o5g2000hsb.googlegroups.com> <CK2dnZyVvcYDOp3bnZ2dnUVZ_r2onZ2d@comcast.com> <1174452970.847074.326170@l75g2000hse.googlegroups.com> <1174459783.135748.294300@e65g2000hsc.googlegroups.com> <1174462306.295916.202600@b75g2000hsg.googlegroups.com> <1174470406.291081.237070@y80g2000hsf.googlegroups.com> <1174471734.149355.182920@n59g2000hsh.googlegroups.com>Show Full Headers
Complete Article Headers
X-Google-Thread: 112d1e,99b7ff176446d3ef X-Google-Thread: 103407,99b7ff176446d3ef X-Google-Thread: 111d0a,99b7ff176446d3ef X-Google-Attributes: gid112d1e,gid103407,gid111d0a,public X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news3.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed00.sul.t-online.de!t-online.de!news-lei1.dfn.de!news1.uni-leipzig.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Alex Gibson" <news@alxx.org> Newsgroups: sci.electronics.design,aus.electronics,sci.electronics.basics Subject: Re: Using RSSI to locate an object Date: Thu, 22 Mar 2007 21:31:07 +1100 Lines: 44 Message-ID: <56f4dkF27vf9eU1@mid.individual.net> References: <1174348989.871006.52080@n76g2000hsh.googlegroups.com> <1174401978_523@sp6iad.superfeed.net> <1174437980.626142.221850@o5g2000hsb.googlegroups.com> <CK2dnZyVvcYDOp3bnZ2dnUVZ_r2onZ2d@comcast.com> <1174452970.847074.326170@l75g2000hse.googlegroups.com> <1174459783.135748.294300@e65g2000hsc.googlegroups.com> <1174462306.295916.202600@b75g2000hsg.googlegroups.com> <1174470406.291081.237070@y80g2000hsf.googlegroups.com> <1174471734.149355.182920@n59g2000hsh.googlegroups.com> Reply-To: "Alex Gibson" <news at al xx org - remove spaces replace dot and at> X-Trace: individual.net 9gd5nFGSJfLCMTgAI4DrVAHD5ihVmYDjBtIwrGaZtdLbKfCnrg X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-RFC2646: Format=Flowed; Original