SIFT descriptors

[Rahayu A Hamid]

Hello,

I'm trying to used the extractsparsesifthistogram...but not sure if I'm using it correnctly. The options used are reduction (what is the best value?) and color pictures.

This what I got...

(10) [FeatureExtractors/extractsparsesifthistogram.cpp:231:printSettings] settings:
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:232:printSettings] ===========================
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:233:printSettings] suffix=sparsesifthisto.gz
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:234:printSettings] common histograms? no
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:235:printSettings] steps=4
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:236:printSettings] prune threshold=0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:237:printSettings] scale=0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:238:printSettings] position? no
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:239:printSettings] dimensionality reduction=32
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:241:printSettings] save PCA? 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:242:printSettings] load PCA? 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:243:printSettings] discretisation mode=1
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:247:printSettings] leaveoutfirst? no
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:248:printSettings] decrease stepsizes=4
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:250:printSettings] ===== SIFT settings =====
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:251:printSettings] number of octaves: -1
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:252:printSettings] number of levels per octave: 3
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:253:printSettings] starting octave: 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:254:printSettings] grid size: 10
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:562:main] calculating PCA
[Core/pca.cpp:121:calcPCA] ERROR: PCA running without SVD.
some things after this point are definitively broken.
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:684:main] precomputed maximal value for dimension 0 is nan
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:685:main] precomputed minimal value for dimension 0 is nan
....
....
....
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:685:main] precomputed minimal value for dimension 31 is nan
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:754:main] creating histograms
(1) [FeatureExtractors/extractsparsesifthistogram.cpp:911:main] cmdline was: ./extractsparsesifthistogram --reduction 32 --color --filelist /home/rahayu/try2

I really appreciate the help. Thank you.

Rahayu

--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

[Thomas Deselaers]

Hi, 

Which are the best options strongly depends on the images you are working with. 

I would recommend to start with steps=2 and dimensionality=8 and from there experiment. Note that the dimensionality of the final histograms is exponential in the dimensionality with  finaldim= steps^dimensionality.

best, t.

--
You received this message because you are subscribed to the Google Groups "FIRE - Flexible Image Retrieval Engine" group.
To post to this group, send email to fire...@googlegroups.com.
To unsubscribe from this group, send email to fire-cbir+...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/fire-cbir?hl=en.

--
http://thomas.deselaers.de

[Emeline]

Hello,

Just another remark, perhaps this error "[Core/pca.cpp:121:calcPCA]

ERROR: PCA running without SVD.
some things after this point are definitively broken."

might affect your results. So, if you want get rid of it, you should
install lapack and atlas libraries.
And about options, you can choose to consider your color images as
gray level images. This will significantly decrease your computation
time.

Best regards,

Emeline

[Thomas Deselaers]

hi, 

Good point: 

To use pca dimensionality reduction you need atlas. Without PCA, sparse SIFT histograms will get way too large to be usable. 

Regarding gray-level images: Yes, this will make everything at least 3x faster, but it will come at the cost of not using color (which may or may not be a good idea depending on your images). 

t.

[Rahayu A Hamid]

Thank you!

dangerous content by MailScanner , and is

believed to be clean.

--

This email was Virus checked by Astaro Security Gateway.

[Rahayu A Hamid]

Hi Thomas and Emaline,

I tried installing lapack and atlas libraries and then make fire once again. But I
still get the same messages as before and no histograms were created. Could there be
anything else that I'm doing wrong?

Is it sufficient to install the libraries using the package manager?

Regards

Rahayu

[Emeline]

Hi Rahayu,

 Do you have any error while doing make?

 Do you uncomment the lines corresponding to those librairies in the Makefile?

Regards,

Emeline

[Thomas Deselaers]

Rahayu,

As Emeline suggests: you need to edit the Makefile. 

t.

--
You received this message because you are subscribed to the Google Groups "FIRE - Flexible Image Retrieval Engine" group.

To view this discussion on the web visit https://groups.google.com/d/msg/fire-cbir/-/Bf4c2TKWLBMJ.

To post to this group, send email to fire...@googlegroups.com.
To unsubscribe from this group, send email to fire-cbir+...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/fire-cbir?hl=en.

--

http://thomas.deselaers.de

[Rahayu A Hamid]

Hi Thomas and Emeline,

I have uncomment the lines corresponding to those librairies in the Makefile as you sugested and do make again. While doing make, there were lots of warning messsages.

I tried the extractsparsesifthistogram again and this time, this is what I got

rahayu@rahayu-desktop:~/fire-cbir-2.3/bin$ ./extractsparsesifthistogram --steps 2 --reduction 8 --color --filelist /home/rahayu/try2

(10) [FeatureExtractors/extractsparsesifthistogram.cpp:231:printSettings] settings:
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:232:printSettings] ===========================
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:233:printSettings] suffix=sparsesifthisto.gz
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:234:printSettings] common histograms? no
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:235:printSettings] steps=4
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:236:printSettings] prune threshold=0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:237:printSettings] scale=0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:238:printSettings] position? no

(10) [FeatureExtractors/extractsparsesifthistogram.cpp:239:printSettings] dimensionality reduction=8

(10) [FeatureExtractors/extractsparsesifthistogram.cpp:241:printSettings] save PCA? 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:242:printSettings] load PCA? 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:243:printSettings] discretisation mode=1
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:247:printSettings] leaveoutfirst? no
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:248:printSettings] decrease stepsizes=4
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:250:printSettings] ===== SIFT settings =====
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:251:printSettings] number of octaves: -1
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:252:printSettings] number of levels per octave: 3
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:253:printSettings] starting octave: 0
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:254:printSettings] grid size: 10
(10) [FeatureExtractors/extractsparsesifthistogram.cpp:562:main] calculating PCA

** On entry to DLASCL parameter number 4 had an illegal value

Any ideas on what's going on?

Thank you for the help.

Regards,

Rahayu

----- Original Message -----
From: "Thomas Deselaers" <dese...@gmail.com>
To: fire...@googlegroups.com
Sent: Thursday, 26 April, 2012 5:15:53 PM
Subject: Re: SIFT descriptors

Rahayu,


As Emeline suggests: you need to edit the Makefile.


t.


On Thu, Apr 26, 2012 at 08:50, Emeline < emeline.l...@gmail.com > wrote:


Hi Rahayu,


Do you have any error while doing make?
Do you uncomment the lines corresponding to those librairies in the Makefile?


Regards,


Emeline




--
You received this message because you are subscribed to the Google Groups "FIRE - Flexible Image Retrieval Engine" group.
To view this discussion on the web visit https://groups.google.com/d/msg/fire-cbir/-/Bf4c2TKWLBMJ .


To post to this group, send email to fire...@googlegroups.com .
To unsubscribe from this group, send email to fire-cbir+...@googlegroups.com .

For more options, visit this group at http://groups.google.com/group/fire-cbir?hl=en .


--
http://thomas.deselaers.de

--
You received this message because you are subscribed to the Google Groups "FIRE - Flexible Image Retrieval Engine" group.

To post to this group, send email to fire...@googlegroups.com.
To unsubscribe from this group, send email to fire-cbir+...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/fire-cbir?hl=en.

--

This email was Virus checked by Astaro Security Gateway.

Currently in POC

[Thomas Deselaers]

No. Not at all. That's somewhere deep inside of lapack/atlas libraries.

Here is the docu of DLASCL:

http://www.mathkeisan.com/usersguide/man/dlascl.html

I would suggest to try different parameters and/or using sparsepatchhistograms instead.

I really haven't used this at all lately. Maybe Emeline, who kindly responded earlier, can give one of her commandlines that work.

Best,

t.

 

--
http://thomas.deselaers.de

[Emeline]

Hi Rahayu,

I tried the same command line as yours. But instead of using the --filelist option, I used "--images home/Pictures/try/*.jpg" , and it works! 

But when I used --filelist option, with the directory as parameter, which is what you might be doing, I have exactly the same error as you.

This error certainly happens since --filelist wants a list of pictures as parameter and not a directory ...

So perhaps try to use the --images option. 

Hope it would help!

[Thomas Deselaers]

Hi,

good observation Emeline. Indeed, --filelist requires a text file  with the filenames (and maybe some additional stuff? I don't know from the top of my head). 

t.

--

You received this message because you are subscribed to the Google Groups "FIRE - Flexible Image Retrieval Engine" group.

To view this discussion on the web visit https://groups.google.com/d/msg/fire-cbir/-/yXdKWknXyn4J.

To post to this group, send email to fire...@googlegroups.com.
To unsubscribe from this group, send email to fire-cbir+...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/fire-cbir?hl=en.

--

http://thomas.deselaers.de

[Emeline Landemaine]

--filelist seems to work fine with a text file with the filenames in it and that's all!

I just put those filenames with their absolute path in a file, since I launch fire from another directory.

2012/4/27 Thomas Deselaers <dese...@gmail.com>

[Rahayu A Hamid]

Hi Emaline,

It worked! Thank you.

Rahayu

----- Original Message -----
From: "Emeline Landemaine" <emeline.l...@gmail.com>
To: fire...@googlegroups.com
Sent: Friday, 27 April, 2012 5:46:44 PM
Subject: Re: SIFT descriptors

--filelist seems to work fine with a text file with the filenames in it and that's all!
I just put those filenames with their absolute path in a file, since I launch fire from another directory.


2012/4/27 Thomas Deselaers < dese...@gmail.com >



Hi,


good observation Emeline. Indeed, --filelist requires a text file with the filenames (and maybe some additional stuff? I don't know from the top of my head).


t.






On Fri, Apr 27, 2012 at 09:17, Emeline < emeline.l...@gmail.com > wrote:


Hi Rahayu,


I tried the same command line as yours. But instead of using the --filelist option, I used "--images home/Pictures/try/*.jpg" , and it works!
But when I used --filelist option, with the directory as parameter, which is what you might be doing, I have exactly the same error as you.
This error certainly happens since --filelist wants a list of pictures as parameter and not a directory ...
So perhaps try to use the --images option.


Hope it would help!

Le vendredi 27 avril 2012 07:50:24 UTC+2, Thomas Deselaers a écrit :







On Fri, Apr 27, 2012 at 06:52, Rahayu A Hamid < rah...@uthm.edu.my > wrote:


Hi Thomas and Emeline,

I have uncomment the lines corresponding to those librairies in the Makefile as you sugested and do make again. While doing make, there were lots of warning messsages.

I tried the extractsparsesifthistogram again and this time, this is what I got

rahayu@rahayu-desktop:~/fire- cbir-2.3/bin$ ./extractsparsesifthistogram --steps 2 --reduction 8 --color --filelist /home/rahayu/try2

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:231:printSettings] settings:
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:232:printSettings] ===========================
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:233:printSettings] suffix=sparsesifthisto.gz

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:234:printSettings] common histograms? no

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:235:printSettings] steps=4

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:236:printSettings] prune threshold=0

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:237:printSettings] scale=0

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:238:printSettings] position? no
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:239:printSettings] dimensionality reduction=8

(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:241:printSettings] save PCA? 0
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:242:printSettings] load PCA? 0
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:243:printSettings] discretisation mode=1
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:247:printSettings] leaveoutfirst? no
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:248:printSettings] decrease stepsizes=4
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:250:printSettings] ===== SIFT settings =====
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:251:printSettings] number of octaves: -1
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:252:printSettings] number of levels per octave: 3
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:253:printSettings] starting octave: 0
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:254:printSettings] grid size: 10
(10) [FeatureExtractors/ extractsparsesifthistogram. cpp:562:main] calculating PCA