Exception in toCv while running the sample ofxFaceTracker program about ofxfacetracker HOT 8 OPEN

Unfortunately I don't have any iOS experience so I can't help with this one. Sorry! Let me know if you figure it out.

On Dec 12, 2012, at 3:36 AM, mayankchouhan1089 [email protected] wrote:

Hi Kyle,

I am getting an exception error while trying to run a sample application for faceTracking.

I have made OfxCv to work in iOS and ofxCv is working fine.

exception arises in :

tracker.update(toCv(cam));

I am not able to figure out why this arises an exception for iOS while the same statement works fine for Window OS.

Awaiting your reply :)

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Reply to this email directly or view it on GitHub.

from ofxfacetracker.

This seems to happen when the cam image is not set / initialised.
I noticed this same error crop up when I was running a face tracker app in the iOS Simulator with the camera code defined out and using a un-initialised ofImage instead of the cam (fixed by initialising that image but yeah, was the same error)

Same kind of problem I noticed happening on a iOS device when using the threaded face tracker and not passing any image to it for a considerable amount of time. I am still trying to track this one down.

from ofxfacetracker.

@danoli3 any solution for above issue yet?

from ofxfacetracker.

Just always pass the tracker a initialised ofImage (either from the cam feed or just a loaded image). Seems to do the job :)

from ofxfacetracker.

@danoli3 I am doing something like this, but still giving me exception -

void testApp::update() {
    cam.initGrabber(480, 360);
    cam.update();

    if(cam.isFrameNew()) {
        Mat camMat = toCv(cam);
        tracker.update(camMat);
        **************
}

Can you please provide me any hint, what i am doing wrong in it.

from ofxfacetracker.

This is what I am doing:
members:

ofxCvColorImage colorCv;
ofxFaceTrackerThreaded tracker;

init:

colorCv.allocate(cam.getWidth(),cam.getHeight());

update:

cam.update();
colorCv = cam.getPixels();
tracker.update(toCv(colorCv))

from ofxfacetracker.

@danoli3 Thanks for quick reply, it started working, i think use of "ofxFaceTrackerThreaded" fixed the issue.

But still I am getting some warning "ofGLRenderer::draw(): texture is not allocated", will try to resolve those on my own.

from ofxfacetracker.

I tried couple of things, still getting these in logs. Attached the screen shot of iPad as well.

2013-07-04 15:19:52.015 iFaceRecognizer[2239:907] ofxiPhoneAppDelegate
2013-07-04 15:19:52.266 iFaceRecognizer[2239:907] Creating OpenGL ES2 Renderer
2013-07-04 15:19:52.270 iFaceRecognizer[2239:907] Failed to load vertex shader
2013-07-04 15:19:52.271 iFaceRecognizer[2239:907] Failed to compile vertex shader
2013-07-04 15:19:52.272 iFaceRecognizer[2239:907] OpenGL ES2 failed

2013-07-04 15:19:52.293 iFaceRecognizer[2239:907] Creating OpenGL ES1 Renderer
2013-07-04 15:19:52.317 iFaceRecognizer[2239:907] WARNING: -[<AVCaptureVideoDataOutput: 0x20b8c80> setMinFrameDuration:] is deprecated. Please use AVCaptureConnection's -setVideoMinFrameDuration:
2013-07-04 15:19:54.121 iFaceRecognizer[2239:907] layoutSubviews
[notice] Device orientation changed to 1
Device 0: Back Camera
Device 1: Front Camera
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated
[warning] ofGLRenderer::draw(): texture is not allocated

Any idea on this?

from ofxfacetracker.