chromakey

I had been searching for good algorithm for green screen chroma key using ImageMagick, but no satisfactory answer so far. I would like to explore a simple method of using range selection along the HSV/HSB color space (similar to -fuzz) to select the green color I want and make them transparent. The -fuzz seems to apply only in RGB space, which is not desired. Can anyone teach me how to select color with seperate range for H, S, V component, for example, 115-125 degree Hue, 40%-60% Saturation and 30-80% Value. If there is other better chroma-key algorithm, your advice is highly appreciated too.

I want to change the Surface preview bottom overlay with gif or image Like Vigo Like this Please tell me any sdk or what I am using for this Filter I am able to change the overlay on the top view using this Help of this PictureCallback cameraPictureCallbackJpeg = new PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Bitmap cameraBitmap = BitmapFactory.decodeByteArray (data, 0, data.length); int wid = cameraBitmap.getWidth(); int hgt = cameraBitmap.getHeight(); // Toast.makeText(getApplicationContext(), wid+""+hgt, Toast

I'm writing a script to chroma key (green screen) and composite some videos using Python and PIL (pillow). I can key the 720p images, but there's some left over green spill. Understandable but I'm writing a routine to remove that spill...however I'm struggling with how long it's taking. I can probably get better speeds using numpy tricks, but I'm not that familiar with it. Any ideas? Here's my despill routine. It takes a PIL image and a sensitivity number but I've been leaving that at 1 so far...it's been working well. I'm coming in at just over 4 seconds for a 720p frame to remove this spill.

Is it possible to composite green screen images -- an animated actor against a green background, with a backdrop photo and make a video of that using avassetwriter on the iPhone. I have an application that creates a sequence of screenshots of an animated character against a green background. I'd like to composite those with a photograph from their library. Is there some way to composite the two into a video on the iPhone? Thanks, Yes, there is. I just added a chroma key filter to my GPUImage framework, which should let you do realtime green screen effects from camera, image, or movie sources.

This is what i need to achieve: Take image from camera or Gallery Remove background from image & save it Background should be anything black or white Also need to remove shadow along with the background Result Example: Original Image Result Image This is what i have tried: CGFloat colorMasking[6]={222,255,222,255,222,255}; CGImageRef imageRef = CGImageCreateWithMaskingColors([IMG CGImage], colorMasking); UIImage *resultThumbImage = [UIImage imageWithCGImage:imageRef scale:ThumbImage.scale orientation:IMG.imageOrientation]; Its only work on white background. Its not more effective. I need to