MATLAB: How to perform grayscale reconstruction by erosion

gray scale reconstructionImage Processing Toolbox

On a gray scale image i want to perform reconstruction by erosion as well as reconstruction by dilation.

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There is an imreconstruct that does reconstruction. You give it a smaller "marker" image and your larger binary image and it returns an image with only the blobs that have marker(s) in them. See my attached demos.

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MATLAB: How to extract coefficient of a certain term in Matlab

Try this:

syms f1 f2 a
pexpansion = f1 - f2 - a*(f1 - f2) + f2/a + a^2*(f1 - f2) - a^3*(f1 - f2) + a^4*(f1 - f2);
pexpansion = expand(a * pexpansion);                            % Eliminate ‘a’ In Denominator
[cfs,trms] = coeffs(pexpansion, a);                             % Coeffients & Terms
Result = cfs(trms == a)                                         % Coefficient Of ‘a’
Result =
f1 - f2

MATLAB: Is it possible to combine, lossy and lossless image compression??

I wasn't sure that was legal, but maybe times are changing. See this 2006 paper that proposes a method exactly as you described: http://www.vast.uccs.edu/~tboult/PAPERS/IJBRA-06-Zukowski-Boult-Medical-Image-Compression.pdf

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MATLAB: How to extract coefficient of a certain term in Matlab

MATLAB: Is it possible to combine, lossy and lossless image compression??

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