[pHash-support] Eclipse + MVP + Java

[Evan Klinger]

Also note that the hash field is an array of primitive types, so to
print the hash you will need to loop over the hash field array:
for(int i = 0; i < hashes[0].hash.length; ++i)
System.out.println(hashes[0].hash[i]);

On Fri, Feb 12, 2010 at 12:00 PM, Evan Klinger <eklinger at phash.org> wrote:
> Sebastian,
> It looks like you are almost there.
> First, you are trying to print the MHImageHash object and not the
> actual hash, the hash field would be hashes[0].hash.
> The MVP tree must be created with at least leaf capacity + 3 images,
> which by default is 28 I believe. Try placing 30 images in your
> directory and then create the MVP tree.
> Please keep us posted on your progress.
> Thanks
> Evan
>
> On Fri, Feb 12, 2010 at 11:13 AM, Sebastian Gallese
> <sebastiangallese at gmail.com> wrote:
>> Hello,
>>
>> Getting pHash to work in Java in Eclipse has been pretty cool.  I did
>> the following steps and doing a simple image distance calculation is
>> easy:
>>
>>    *  Copy all .java files in pHash-0.8.1/bindings/java to your Eclipse project
>>    * Make sure you are not working in a package (put all your files
>> in default package)
>>    * Go to run → run configurations, make a new configuration, add
>> pHash to your main class
>>    * In the Arguments tab, put -Djava.library.path=/usr/local/lib in
>> VM arguments
>>    * If you want to use the program arguments, you can put something
>> like -mh /home/Pictures/cc.jpg /home/Pictures/c1.jpg (just make sure
>> you use the full path name)
>>
>> However, when trying to build an MPV tree, I'm running into some difficulty.
>>
>> Right now, I have two jpgs in the folder /home/kdge/Pictures that I
>> want to add to the tree.  So I'm using the following code:
>>
>> MVPTree mvp = new MVPTree("mvp");
>> MHImageHash[] hashes = getMHImageHashes("/home/kdge/Pictures");
>> System.out.println("Hash 1 is :" + hashes[0]);
>> boolean result = mvp.create(hashes);
>> System.out.println("MVP creation result is:" + result);
>>
>> But I get the following output:
>>
>> Hash 1 is :MHImageHash at 6eb38a
>> MVP creation result is:false
>>
>> Why is mvp.create(hashes); returning false when I'm supplying it with
>> a valid array of hashes?
>>
>> Even running "java -Djava.library.path=/usr/local/lib pHash -mvp
>> /home/kdge/Pictures/" from the command line returns no information.
>>
>> Full code is here: http://gist.github.com/302871 (it's just a modified
>> pHash.java)
>>
>> Thanks,
>>
>> Seb
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>>
>