Blue Screen Matting Matlab

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Blue screen matting matlab.

A classical problem of imaging the matting problem is separation of a non rectangular foreground image from a usually rectangular background image for example in a film frame extraction of an actor from a background. Extracting a foreground element from a background image by estimating an opacity for each pixel of the foreground element. The rgb triplet is a three element row vector whose elements specify the intensities of the red green and blue components of the color. What should i do about the blue screen problem.

Everytime i try to run the model in simulink in real time it will get the blue screen. Blue screen matting requies that the foreground has no blue in it and that the background of the image from which the foreground is being extracted be pure blue. The intensities must be in the range 0 1. The following table lists the predefined colors and their rgb triplet equivalents.

Figure one shows the image the most right hand side of the screen shows the background of the image i am trying to remove from the picture basically a comparison method if the pixels are similar remove. The principleis to photographthe sub ject against a constant colored background and extract fore ground and alpha treating each frame in isolation. Run the command by entering it in the matlab command window. 1 alvy ray smith and james f.

Bluescreen and bayesian matting 1 27 14 0 00 02 mattin. Blue screen matting was among the first techniques used forlive actionmatting. The technique extends blue screen matting to backgrounds that have almost arbitrary color distributions though coarse knowledge of the boundary s location is required. This sin gle image approach is underconstrained since at each pixel.

I have tried image subtraction in matlab but realised that there is a big blue patch on the image. I m using a windows 10 and matlab 2017a. 259 268 2 changick kim jungwoo park jaeho lee and jenq neng hw ang. A bayesian approach to digital matting yung yu chuang 1 brian curless 1 david salesin 1 2 richard szeliski 2 1 university of washington 2 microsoft research abstract this paper proposes a new bayesian framework for solving the matting problem i e.

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