Science > Physics > Anybody studies wavelet? Can apply wavelet in wireless communication?
| Topic: |
Science > Physics |
| User: |
"Sea Squid" |
| Date: |
10 Mar 2005 08:31:13 PM |
| Object: |
Anybody studies wavelet? Can apply wavelet in wireless communication? |
Studied James S. Walker's aprimer on wavelets and their scientific
applications.
but I am wondering where I can make use of it.
Just curious.
.
|
|
| User: "Vasileios Zografos" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 01:51:18 AM |
|
|
"Sea Squid" <Sea.Squid@hotmail.com> wrote in message
news:42310171$1@news.starhub.net.sg...
Studied James S. Walker's aprimer on wavelets and their scientific
applications.
but I am wondering where I can make use of it.
Just curious.
Hi, I am sure people here will give you hundreds of uses of wavelets. One
thats spring to mind (from a computer graphics/vision approach) is image
compression. See the JPEG2000 compression algorithm. It uses wavelets.
Regards,
V.Z.
.
|
|
|
| User: "Sea Squid" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 02:16:56 AM |
|
|
Yeah, I was aware that. The book I am reading gave a lot of examples in
image
compression and noise reduction, which could be found in photoshop also.
I am wondering whether I could make use of that in the wireless modulation
and
demodulation.
Thanks.
"Vasileios Zografos" <vasileios@zografos.org> wrote in message
news:d0rilm$1go$1@news7.svr.pol.co.uk...
"Sea Squid" <Sea.Squid@hotmail.com> wrote in message
news:42310171$1@news.starhub.net.sg...
Studied James S. Walker's aprimer on wavelets and their scientific
applications.
but I am wondering where I can make use of it.
Just curious.
Hi, I am sure people here will give you hundreds of uses of wavelets. One
thats spring to mind (from a computer graphics/vision approach) is image
compression. See the JPEG2000 compression algorithm. It uses wavelets.
Regards,
V.Z.
.
|
|
|
| User: "N:dlzc D:aol T:com \dlzc\ N: dlzc1 D:cox" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 07:50:08 AM |
|
|
Dear Sea Squid:
"Sea Squid" <Sea.Squid@hotmail.com> wrote in message
news:42315277$1@news.starhub.net.sg...
"Vasileios Zografos" <vasileios@zografos.org> wrote in message
news:d0rilm$1go$1@news7.svr.pol.co.uk...
Hi, I am sure people here will give you hundreds of uses of
wavelets. One
thats spring to mind (from a computer graphics/vision
approach) is image
compression. See the JPEG2000 compression algorithm. It uses
wavelets.
Yeah, I was aware that. The book I am reading
gave a lot of examples in image compression
and noise reduction, which could be found in
photoshop also.
I am wondering whether I could make use of
that in the wireless modulation and demodulation.
I moved your response to the end, so that future readers can make
sense of the thread.
If it is like other JPG algorithms, they are lossy. Our brains
can make sense of a JPG image, since a lot of information in a
photograph is redundant, and "close enough is good enough". This
won't work for network traffic, because the slightest errors can
affect routing information, and other integrity-critical
information.
David A. Smith
.
|
|
|
| User: "Jan Panteltje" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 08:05:10 AM |
|
|
On a sunny day (Fri, 11 Mar 2005 06:50:08 -0700) it happened "N:dlzc D:aol
T:com \(dlzc\)" <N: dlzc1 D:cox T:net@nospam.com> wrote in
<YlhYd.4076$uk7.3759@fed1read01>:
Dear Sea Squid:
"Sea Squid" <Sea.Squid@hotmail.com> wrote in message
news:42315277$1@news.starhub.net.sg...
"Vasileios Zografos" <vasileios@zografos.org> wrote in message
news:d0rilm$1go$1@news7.svr.pol.co.uk...
Hi, I am sure people here will give you hundreds of uses of
wavelets. One
thats spring to mind (from a computer graphics/vision
approach) is image
compression. See the JPEG2000 compression algorithm. It uses
wavelets.
Yeah, I was aware that. The book I am reading
gave a lot of examples in image compression
and noise reduction, which could be found in
photoshop also.
I am wondering whether I could make use of
that in the wireless modulation and demodulation.
I moved your response to the end, so that future readers can make
sense of the thread.
If it is like other JPG algorithms, they are lossy. Our brains
can make sense of a JPG image, since a lot of information in a
photograph is redundant, and "close enough is good enough". This
won't work for network traffic, because the slightest errors can
affect routing information, and other integrity-critical
information.
David A. Smith
Not exactly, when we for example look at vector oriented modulation systems,
QAM, you see there is a 'tolerance' (of the area) were the vector has to point
for it to be a for example '11' 01' etc..
Given this 'fuzziness' (on the border of analog and digital), why not?
He is talking 'modulation' and 'demodulation' after all.
JP (C) Certified Genius (TM) (P) )(C)
.
|
|
|
| User: "N:dlzc D:aol T:com \dlzc\ N: dlzc1 D:cox" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 09:01:29 AM |
|
|
Dear Jan Panteltje:
"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:1110549916.effa04f5d2f305eaed7e96fa21379be9@teranews...
On a sunny day (Fri, 11 Mar 2005 06:50:08 -0700) it happened
"N:dlzc D:aol
T:com \(dlzc\)" <N: dlzc1 D:cox T:net@nospam.com> wrote in
<YlhYd.4076$uk7.3759@fed1read01>:
....
If it is like other JPG algorithms, they are lossy. Our brains
can make sense of a JPG image, since a lot of information in a
photograph is redundant, and "close enough is good enough".
This
won't work for network traffic, because the slightest errors
can
affect routing information, and other integrity-critical
information.
Not exactly, when we for example look at vector oriented
modulation systems,
QAM, you see there is a 'tolerance' (of the area) were the
vector has to point
for it to be a for example '11' 01' etc..
Given this 'fuzziness' (on the border of analog and digital),
why not?
He is talking 'modulation' and 'demodulation' after all.
JP (C) Certified Genius (TM) (P) )(C)
Who am I to argue with a genius? ;>)
David A. Smith
.
|
|
|
| User: "N:dlzc D:aol T:com \dlzc\ N: dlzc1 D:cox" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 09:11:06 AM |
|
|
"N:dlzc D:aol T:com (dlzc)" <N: dlzc1 D:cox T:net@nospam.com>
wrote in message news:RoiYd.4087$uk7.1930@fed1read01...
Dear Jan Panteltje:
"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:1110549916.effa04f5d2f305eaed7e96fa21379be9@teranews...
On a sunny day (Fri, 11 Mar 2005 06:50:08 -0700) it happened
"N:dlzc D:aol
T:com \(dlzc\)" <N: dlzc1 D:cox T:net@nospam.com> wrote in
<YlhYd.4076$uk7.3759@fed1read01>:
...
If it is like other JPG algorithms, they are lossy. Our
brains
can make sense of a JPG image, since a lot of information in a
photograph is redundant, and "close enough is good enough".
This
won't work for network traffic, because the slightest errors
can
affect routing information, and other integrity-critical
information.
Not exactly, when we for example look at vector oriented
modulation systems,
QAM, you see there is a 'tolerance' (of the area) were the
vector has to point
for it to be a for example '11' 01' etc..
Given this 'fuzziness' (on the border of analog and digital),
why not?
He is talking 'modulation' and 'demodulation' after all.
JP (C) Certified Genius (TM) (P) )(C)
Who am I to argue with a genius? ;>)
Google Advanced
all the words: wavelet modulation application
37,000 hits...
David A. Smith
.
|
|
|
|
|
|
|
|
|
| User: "Jan Panteltje" |
|
| Title: Re: Anybody studies wavelet? Can apply wavelet in wireless communication? |
11 Mar 2005 07:41:07 AM |
|
|
On a sunny day (Fri, 11 Mar 2005 10:31:13 +0800) it happened "Sea Squid"
<Sea.Squid@hotmail.com> wrote in <42310171$1@news.starhub.net.sg>:
Studied James S. Walker's aprimer on wavelets and their scientific
applications.
but I am wondering where I can make use of it.
Just curious.I dunno about that primer, but wavelet compression has been used,
IS used, and will be used extensively over networks or otherwise.
Want to play?
http://www.cns.nyu.edu/~eero/EPIC/
Want to play some more:
http://forum.doom9.org/showthread.php?s=&threadid=84593&highlight=snow
This you can all do on your PC.
I have tested snow codec BTW last weeek, it is not ready for primetime
(or replacement of mpeg2, and DCT based codecs).
See my posting on rec.video.desktop.
So, as you may now see, wavelet is here, and people are using it.
And source code is available.
.
|
|
|
|
|
Related Articles |
|
|
