As briefly as I can; are there any frameworks available that I can drop into an iPad app I'm working on, along with a 3D model, and allow me to add a view that will present the model in an interactive format?
Model needs to be rotatable, and ideally I would like to be able to add interactive points on to the model that pop up modal views when tapped.
I have never worked with 3D before in any respect so I'm coming at that part as a complete novice. The 3D model is being supplied to me and will be available in "various formats". The rest of the app is pure Objective-C in which I'm proficient enough.
I have Googled and Googled and have come up with nothing so far.
Failing there being any drop-in frameworks, how much of a challenge is it likely to be to get myself up to speed with what I would need to know? Are there any good starting points to expand my knowledge here?
3D is a complex matter, if you don't see your future dealing with it on a regular basis I wouldn't recommend writing your own solutions for it.
The closest you can find to a drag and drop framework would be the SDK of the iPhone / iPad GPU's manufacturer. It's pretty easy to use.
PowerVR SDK Download
After a free registration on their website, you can download the SDK that contains lots of samples with source code. Their framework displays 3D models in their own POD format, which is of course heavily optimized for the iOS devices. Ask your 3D model provider to give you the models in POD format (you can find POD converters / exporters for Maya etc. on PowerVR's website as well).
Related
I'm trying to build an app to make image recognition using the phone camera... I saw a lot of videos where using the camara the app identify where is the person or which feelings they have or things like that in real time.
I need to do a built an app like this, I know it's not an easy task, but I need to know which technologies can be use in order to achieve this in a mobile app?
Is it tensor flow?
Are there some libraries that helps to achieve this?
Or do I need to build a full Machine Learning with IA app?
Sorry to make such a general question but I need some insights.
Redgards
If you are trying to do this for the iOS platform, you could use a starter kit here: https://developer.ibm.com/patterns/build-an-ios-game-powered-by-core-ml-and-watson-visual-recognition/ for step-by-step instructions.
https://github.com/IBM/rainbow is a repo which it references.
You train your vision model on the IBM Cloud using Watson Visual Recognition, which just needs example images to learn from. Then you download the model into your iOS app and deploy with XCode. It will "scan" the live camera feed for the classes defined in your model.
I see you tagged TF (which is not part of this starter kit) but if you're open to other technologies, I think it would be very helpful.
Being a novice I need an advice how to solve the following problem.
Say, with photogrammetry I have obtained a point cloud of the part of my room. Then I upload this point cloud to an android phone and I want it to track its camera pose relatively to this point cloud in real time.
As far as I know there can be problems with different cameras' (simple camera or another phone camera VS my phone camera) intrinsics that can affect the presision of localisation, right?
Actually, it's supposed to be an AR-app, so I've tried existing SDKs - vuforia, wikitude, placenote (haven't tried arcore yet cause my device highly likely won't support it). The problem is they all use their own clouds for their services and I don't want to depend on them. Ideally, it's my own PC where I perform 3d reconstruction and from where my phone downloads a point cloud.
Do I need a SLAM (with IMU fusion) or VIO on my phone, don't I? Are there any ready-to-go implementations within libs like ARtoolKit or, maybe, PCL? Will any existing SLAM catch up a map, reconstructed with other algorithms or should I use one and only SLAM for both mapping and localization?
So, the main question is how to do everything arcore and vuforia does without using third party servers. (I suspect the answer is to device the same underlay which vuforia and other SDKs use to employ all available hardware..)
I am a beginner in Windows Phone app development. My goal is to create a simple augmented reality application which will include shape recognition (ex. hand or face). Additionally I would like to draw 3D objects on screen and place them in reality. The question is what is the best way to start development? Especially which toolkits do You advise to use? My current idea is to detect motion using Motion Class built in WP-SDK and use EmguCV to dectect and recognise shapes. And which library should I use to draw shapes (Direct3d or XNA) ? Is it a good way to start? I am confused if EmguCV is available on Windows Phone platform at all?
Additional info:
- platform will be WP7.5 or WP8
i'm working also on windows phone project, it was about face recognition but because lack libraries that can used in other things i change my project.
but there is FACESDK that could help you for Face recognition.
http://research.microsoft.com/en-us/projects/facesdk/
I recently moved from a PC to a MacBook Pro. I'm starting to go through tutorials on Objective-C and developing in Cocoa. I do a lot of image processing algorithm development work (pixel by pixel manipulation) in my day job so I'd like to get create a test image processing app or two for OS X. I'm struggling to figure out where to start - let's say I want to create a simple application (that I could reuse) like the following:
load an image from an open file option within a file menu
display this within the GUI.
Click a button to apply pixel by pixel processing
Update the displayed image
Save the processed image from the save option within the file menu
Any pointers or links would be most appreciated.
Thanks
Other info:
I'm pretty familiar with OpenCV within Linux - haven't looked at using it within Objective-C/Cocoa/Xcode environment yet though - not even sure if this would be a good idea?
I guess it would be nice to use GPU acceleration as well, but I'm not familiar with OpenGL/OpenCL - so I might have to put that one on the long finger for the moment.
As you are looking at the Apple platform, you should look into the CoreImage framework - it will provide you most of pre-baked cookies ready to be consumed in your application.
For more advanced purposes, you can start off with openCV.
Best of luck!!
As samfisher suggests, OpenCV is not that hard to get working on the Mac, and Core Image is a great Cocoa framework for doing GPU-accelerated image processing. I'm working on porting my GPUImage framework from iOS to the Mac, and it's entirely geared around making accelerated image processing easy to work with, but unfortunately that isn't working right now.
If you're just getting started on the Mac, one tool that I can point out which you might overlook is Quartz Composer. You have to download the separate Graphics Tools package from Apple's developer site to install Quartz Composer, because it's no longer shipped with Xcode.
Quartz Composer is a graphical development tool that lets you drag and drop modules, connect inputs and outputs, and do rapid development of some fairly interesting things. One task it's great for is doing rapid prototyping of image processing, either using Core Image or OpenGL shaders. I've even heard of people using OpenCV with this using custom patches. You can easily connect an image or camera source into a filter chain, then edit the filters and see live updates as you work on them, without requiring a compile-run cycle.
If you want some sample QC projects to play with, I have a couple of them linked from this article I wrote a couple of years ago. They both do the same color-based object tracking, with one using Core Image and the other OpenGL shaders. You can dig into that and play around to see how that works, without having to get too far into writing any code.
New to Mac OS X, familiar with Windows. Windows has DirectShow, a good number of built-in filters, COM programming, and GraphEdit for very fast prototyping and snooping on the graphs you've constructed in code.
I'm now about to go to the Mac to work with cameras, webcams, microphones, color spaces, files, splitting, synchronization, rendering, file reading, file saving, and many of things I've come to take for granted with DirecShow when putting together applications for live performance. On the Mac side, so far I've found ... nothing! Either I don't know where to look or I'm having the toughest time tying the Mac's reputation for its ease of handling media with a coherent programmatic ability to get in there and start messin' with media manipulatin' building blocks.
I've seen some weak suggestions to use gstreamer or some library for QT but I can't bring myself to believe that this is the Apple way to go. And I've come across some QuickTime documentation but I'm not looking to do transitions, sprites, broadcasting, ...
Having a brain trained on DirectShow means I don't even know how Apple thinks about providing DirectShow-like functionality. That means I don't know the right keywords and don't even know where to look. Books? Bought a few. Now I might be able to write some code that can edit your sister's wedding video (if I can't make decent headway on this topic I may next be asking what that'd be worth to you), but for identifying what filters are available and how to string them together ... nothing. Suggestions?
Video handling is going through a huge transition on the Mac at the moment. QuickTime is very old, but also big and powerful, so it's been undergoing an incremental replacement process for the past 5 years or so.
That said, QTKit is the QuickTime subset (capture, playback, format conversion and basic video editing) which is supported going forward. The legacy QuickTime APIs are still there for the moment, and probably will remain at least until its major features are available elsewhere, but are 32-bit only. For some involved video stuff you may end up needing to use it in places.
At the moment, iOS is ahead of the Mac because it could start from scratch with AV Foundation. The future of the Mac media frameworks will probably either be AV Foundation directly (with QTKit being a lightweight shim over the top) or an extension of QTKit that looks very similar.
For audio there's Core Audio which is on Mac and iOS and isn't going away any time soon. It's quite powerful but somewhat obtuse in places. Luckily online support is very good; the mailing list is an essential resource.
For filters and frame-level processing you've got Core Video as someone else mentioned, as well as Core Image. For motion graphics there's Quartz Composer which includes a graphical editor and a plugin architecture to add your own patches. For programmatic procedural animation and easily mixing rendering models (OpenGL, Quartz, video, etc.) there's Core Animation.
In addition to all of these, of course there's no reason you can't use open source libraries where the built-in stuff doesn't do what you want.
To address your comment below:
In QuickTime (and QTKit), individual data types like audio and video are represented as tracks. It may not be immediately clear that QuickTime can open audio as well as video file formats. A common way to combine audio and video would be:
Create a QTMovie with your video file.
Create a QTMovie with your audio file.
Take the QTTrack object representing the audio and add it to the QTMovie with the video in it.
Flatten the movie, so it doesn't simply contain a reference to the other movie but actually contains the audio data.
Write the movie to disk.
Here's an example from Blender. You'll see how the A/V muxing is done in the end_qt function. There's also some use of Core Audio in there (AudioConverter*). (There's some classic QuickTime export code in quicktime_export.c but it doesn't seem to do audio.)