how to remove background from image without matching background in MATLAB [closed] - matlab

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Closed 10 years ago.
how to remove background from an image without matching background.
For example if i want to remove background from this below image then for removing background sample background image should not be given.

I think there is no simple answer to this question. In the first place, you should find a method to tell Matlab what the background is. Read about segmentation (dividing image into coherent parts) .
In general, you will use different approach to different type of images. For example if there is always face on image you can utilize face recognition techniques and support them with some kind of edge detection and so on.

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Give smooth effect of UIImage Stratch [closed]

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Closed 9 years ago.
I am Creating one application and i required following effects.
I don't know hot to start work. if any one know what is my first step for this effect then please guide me for how to stretch Hair like this.
effects Link1
effects Link2
I used following link and tutorial but not succeeded.
http://code.google.com/p/faceworkshop/
http://code.google.com/p/imgwarp-opencv/
http://docs.opencv.org/doc/tutorials/ios/table_of_content_ios/table_of_content_ios.html#table-of-content-ios
I think, I am going to wrong way...Plz help me.
The effect look alike it's an OpenGL object with a texture where you change the coordinates of the vertex nearest to the touch point. The OpenGL object has to be constructed out of triangles matching the form, which is probably done based on the hair image.

How can I detect complete body like hand , leg? [closed]

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Closed 10 years ago.
Using CIFaceFeature we can detect face feature. But I want to detect hand and leg too.
How can we detect these? Is there any other classes or logic using which we can detect these.
OpenCV is 'just beginning'. Recognition is hard problem and still remain unsolved at most part. There is no hand/leg detection in openCV. You have to train the data yourself using machine learning algorithm provide by openCV. You have to collect positive data (human body image for example) and negative data (non human body image) in order to train.
I suggest to look at this link to speed you up:
http://docs.opencv.org/doc/tutorials/objdetect/table_of_content_objdetect/table_of_content_objdetect.html
OpenCV haar training for static image
http://kang.blog.com/2009/08/12/how-to-use-haartraining-in-opencv/
http://www.technolabsz.com/2011/08/how-to-do-opencv-haar-training.html

GPU Image Filter [closed]

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Closed 10 years ago.
In my app, I want to apply different video filters like: Fade in -Out,Snow fall,Rainbow,Fast Motion,Slow Motion,etc.
I study the Brad Larson project but it does not full fill my all filter requirement.
so, Help me!!
If you need custom filters you can always write them and add to GPUImage project. Just grab some easy filter like GPUImageRGBFilter or GPUImageLineGenerator and experiment.
You can also modify OpenGL calls directly to inject your custom effects in front of a movie. Take a look at CubeExample.

Image Rendering using Cocos2D [closed]

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Closed 10 years ago.
Hi i'm developing an iPhone app with cocos2D framework for image rendering .
How we can split the image into layer for example consider an house image here i want to spilt the roof of the house ,door,wall etc and i want to change there respective colors or images can any one help me in this.! I needed some example code also for it .
Please help me
Use different layer for different depth of rendering.
You can read more about Cocos2D programming here: Click Here
Get Cocos2D SDK and run some sample test applications. DOWNLOAD SDK HERE

iphone opengl es how to add an image as the background? [closed]

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Closed 11 years ago.
this is a project of opengl es, you can run it on iphone sdk,
i want to know how to add an image as the background?
https://docs.google.com/open?id=0B8MGSbywP-HXY2YxYzk3YWItNzk3Zi00ZmNiLTk5NWYtOGY3NmU0OTRlYTM4
please give me source code.
By drawing the picture as the very first thing (in form of a textured quad). Disable depth testing and depth writes.
Update: Code for some project
Note: The actual code and structure strongly depends on the program in question!
// one possible structure
void draw(draw)
{
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
draw_background();
glDepthMask(GL_TRUE);
draw_rest_of_scene();
}