Followed the procedure to get SIFT features but getting empty .csv

[visha...@gmail.com]

I want to extract SIFT values 
I have
JFeatureLib-1.6.4-jar-with-dependencies.jar
Downloaded the sift binary
have book.pgm
kept the jar and sift binary in C:\Program Files\Java\jdk1.8.0_25\bin 
and kept book.pgm as in source folder
Also edited the properties of jar and set path to C:/Program Files/Java/jdk1.8.0_25/bin/sift.exe
I have also checked the permissions

I am running following command 
C:\Program Files\Java\jdk1.8.0_25\bin>java -jar JFeatureLib-1.6.4-jar-with-dependencies.jar -D Sift -d D:\images\ -o D:\output.csv

I am not getting any error but output.csv is empty.. does not show any output.

Please help on this.
Am I missing something?
Waiting for your response...

[Franz Graf]

Hi,

in the first github-issue mail that I received, you also posted a stacktrace. I cannot see it now on github anymore.
There the exception was "java.io.IOException: Sift Binary not executable: C:Program FilesJavajdk1.8.0_25b

insift.exe"

Pleae 

- have a look at https://github.com/locked-fg/JFeatureLib/wiki/HowTo#sift , 

- unpack the jfeaturelib.properties and 

- set the SIFT binary path in the properties file.
- retry.

Good Luck!
Franz

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[visha...@gmail.com]

Hi,

Thanks for the reply. 

I had resolved the binary not executable issue after posting the issue. So I updated the question.

I have tried all the steps from  https://github.com/locked-fg/JFeatureLib/wiki/HowTo#sift

Now I am not getting any error. '.csv' get generated but does not show any output.

Initially it worked fine for CEDD features. But problem with the SIFT.

I will try all one more time carefully anw will let you know..

 Thanks.

[Franz Graf]

HI,

ah I see.

Have you tried converting your image to PGM (for ex. with IrfanView) and process it with Sift directly? So you can check if it's an issue with your image+Sift or with JFeatureLib+Sift.

Good Luck!
Franz

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[visha...@gmail.com]

Hi,

 

Thanks for replying..

 

Yes I have the images in PGM format.

I have tried all steps again.

Nothing has happened.

I cant figuring it out that the command I had given worked with CEDD and the problem was only with SIFT but now its not even working with CEDD.

cmd is not showing any error

I also have noticed one thing that even after  removing the sift.exe (or siftWin32.exe) from the classpath, cmd is not showing any error.

I have
JFeatureLib-1.6.4-jar-with-dependencies.jar
Downloaded the sift binary

have images in .pgm form.

kept the jar and sift binary in C:\Program Files\Java\jdk1.8.0_25\bin 
and kept book.pgm as in source folder
Also edited the properties of jar and set path to C:/Program Files/Java/jdk1.8.0_25/bin/sift.exe
I have also checked the permissions

I am running following command 
C:\Program Files\Java\jdk1.8.0_25\bin>java -jar JFeatureLib-1.6.4-jar-with-dependencies.jar -D Sift -d D:\images\ -o D:\output.csv

I am not getting any error but output.csv is empty.. does not show any output.

I do not have any idea what to do now.

 

[visha...@gmail.com]

Hi,

I have tried SIFT+image

using following command

C:\Program Files\Java\jdk1.8.0_25\bin>siftWin32 -display <D:\book.pgm >result.pgm

getting the output as

Finding keypoints...

882 keypoints found.

PGM file output.

But I want the keypoints as an output

and also tried the

sift <book.pgm >book.key 

Its working.

How to read this key file.

My aim is to learn a Dictionary using SIFT descriptors

 

[Franz Graf]

Hi,

have you checked if a .log file was written?

Franz

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[visha...@gmail.com]

Hi,

Yes I have checked the .log file.

There is on log in a file. It is empty. 

[Vishal Ezen]

Hi Franz,

 

I have used the surf demo provided at https://github.com/locked-fg/JFeatureLib-Demo

to get the idea of getting SIFT features. I got some code from your previous discussions and after some editing

the code worked fine.

Thanks..

code is

 

 public class SiftTest {

    public static void main(String[] args) throws FileNotFoundException, IOException {

        BufferedImage img = ImageIO.read(new FileInputStream("D:\\images\\book.jpg"));

        ImageProcessor ip = new ColorProcessor(img);

        ip = ip.convertToByte(false);

        Sift sift = new Sift(new File("C:\\siftWin32.exe"));

        sift.run(ip);

        

        List<double[]> result = sift.getFeatures();

        System.out.println(result.size() + " features extracted...");
}
}

Thank you so much.

I want to use SIFT features to construct a dictionary (bag of words) and then sparse code each data vector using this dictionary.After this, using the indices in the dictionary for each active basis in the sparse code I have to construct hash code for each data vector.

Can you please suggest anything for this. or how can I use JFeatureLib in this case?...

Thanks for your help.

[Franz Graf]

Hi,

hm strange!
Thanks a lot for posting the solution. can you copy over the code snippet to the github issue and close it?

That would be grat.

Regarding the question about BoW: that's definitely no more the area of JFeatureLib. JFeatureLib is just about extraction.
But sorry, I can't help any further with that. That's not my special field.

Good luck!

Franz

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[Vishal Ezen]

Hi,

Thank you so much for your great help!

The work you have done and the way you are helping the developers is much appreciable...

Thanks once again.. 

[Franz Graf]

Thanks a million for the Feedback.
That's the feedback that keeps me maintaining the project :-)

Franz

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