I'm really stuck right now. I want to apply LIBSVM for Image Classification. I captured lots of Training-Images (BITMAP-Format), from which I want to extract features.
The Training-Images contain people who are lying on the floor. The classifier should decide if there is a person lying on the floor or not in the given Image.
I read lots of papers, documentary, guides and tutorials, but in none of them is documented how to get a LIBSVM-Package. The only thing that is described is how to convert a LIBSVM-Package from a CSV-File like this one: CSV-File. On the LIBSVM-Website several Example-Data can be downloaded. The Example-Data is either prepared as CSV-Files or as ready-to-use Training- and Testdata.
If you look at the Values which are in the CSV-File, the first column are the labels (lying person or not) and the other Values are the extracted features, but I still can't reconstruct how those values are achieved.
I don't know if it's that simple that nobody has to mention it, but I just can't get trough it, so if anybody knows how to perform the feature extraction from Images, please help me.
Thank you in advance,
Regards
You need to do feature extraction first. There are many methods that are available. These include LBP,Gabor and many more.. These methods will help you get the features to input into libsvm..Hope this helps...
Related
I have tried so many options, over many days to try and extract data. I don't know where I am going wrong.
for example, I am on the website reviewcentre.com and am looking at car selling site reviews.
I am struggling badly to retrieve information, most of my xpaths appear incorrect.
Where can I best learn how to do this properly, I have spent days at this.
https://www.reviewcentre.com/car_dealers/we_buy_any_car_-_wwwwebuyanycarcom-review_14068020
I know how to copy xpaths, but when it comes to rapidminer, I can't extract the data.
I know I am doing it wrong, but I don't know what's right unfortunately.
examples include
//*[#id="ReviewTitle-14068020"]
h:html/h:head/h:title/text()
this one works!
//*[#id="ReviewBox-14068020"]/div[1]/div[2]/p[2]/span
I have no problem it appears retrieving the xpath from the website, but using it for extracting data on rapidminer is not working at all..Would really appreciate if anyone can point me in the right direction.
Obviously, you don't want to use unique IDs in your xpaths.
Make sure you have understood the concept of xml namespaces, too.
Couldn't come up with a good way of googling this..
I'm working on a 3d model in Maya and it's getting slow. At first I couldn't find what it was, but I'm suspecting it's all of the polyBrideEdge, pCubeShape and whatnot. Since I was duplicating one part and repeated that a couple times; there's quite a lot of them.
Here's a screenshot of what I mean: http://imgur.com/a/TQr0e
Nevermind, I found it! For anyone wondering: you select one of the nodes with the same type in your attribute editor and click 'hide'. This will group them together I suppose and name it 'polyUniteX'. It might not be the best way or the right way, but this has fixed any performance issues I had prior to doing this.
I have 10000 images. I want to convert them to a format like 'train-images-idx3-ubyte'. This format comes from here. I want them to use the deep learning methods described here
I appreciate any help
Take a look at how these files are loaded here.
The use of numpy.fromfile indicates that the data are simply saved as raw bytes of a specific dtype. You can achieve this using numpy.tofile.
However, make sure that this is really what you want to do. If you want to use certain networks on other images, these images will likely need to be of exactly the same size. It is worth digging further into the tutorials - after a while the transposition to other datasets will become easier.
Is there a way to understand what an image is about? I mean, if I scann a picture, how can I tell that the picture is about a spesific object? I am thinking that if I have some shape in mind, say the shape - pattern of a spesific object that meets its requirements against the object I am searhcing for, then it must be what I am looking for. Anyway I am thinking of an algorithm to scann a picture database and figure out the pictures I am actually looking for,Is there a known way to accomplish such operation?.
If I am reading your question correctly...
This is a very daunting task even for full-fledged corporations like Google, though they are attempting to create something along these lines.
Take a look at Google Goggles for Android if you'd like to see how this sort of system behaves. You'll also notice that it requires very specific circumstances to be even slightly reliable, but the base technology is there.
I would like to represent data that gives an overview but allows them to drill down in an inline fashion - so if you had a grouping of say 6 objects the user could expand the data and it would show the 6 objects immeadiately below it before any more high level data.
It would appear that MSHFlexgrid gives this ability but I can't find any information about actually using it, or what it's limitations are (can you have differing number of fields and/or can they have different spacing, what about column headers, indentation at for the start, etc).
I found this site, but the images are broken (in ie8 and ff3.5). Google searches show people just using the flat data representation but nothing using the hierarchical properties). Does anyone know any good tutorials or forums with a good discussion about pitfalls?
Due to lack of information about using it, I am thinking of coding my own version but if anyone has done work in this area I haven't found it - I would of thought it would be a natural wish for data representation. If someone has coded a version of this (any language) then I wouldn't mind reading about it - maybe my idea of how to do it wouldn't be the best way.
You might want to check out vbAccelerator. He has a Multi-Column Treeview control that sounds like what you may be looking for. He gives you the source and has some pretty decent samples.
The MSHFlexGrid reference pages and the "using the MSHFlexGrid" topic in the Visual Basic manual?
Sorry if you've already looked at these!