matlab 2d直方图平滑,【谷速软件编程】matlab源码-平滑稀疏采样信 和图像的直方图…

function H=HistConnect(X,B,R)

% This Function HistConnect will make a smooth histogram for a signal % or image consisting of a few samples. The function assumes correlat ion

% between the samples, and implicitly generates new linear-interpolat ed

% samples between the orignal samples. Thus makes the assumption of % continuity between samples and low-frequency signal.

%

% (If your samples are spatial uncorrelated, use X=sort(X) before usi ng

% this function)

%

% H=HistConnect(X,B,R)

%

% X : A 1D vector or 2D matrix (image) with sample values

% B : The number of histogram bins (default 256)

% R : A vector [1 x 2], with the min and max histogram boundary,

% (default R=getrangefromclass(X))

%

% Example how it works,

% – You want 3 bins

% – Measured samples [0 0.3 0.7 1]

% – Histogram edges [0 1/3] [1/3 2/3] [2/3 1];

% A normal histogram function will return:

% H= [2 0 2]

%

% This histogram function makes histogram-blocks between two

% values in the sample vector

% sample value 0 connect with 0.3 : [1.33 0.00 0.00]

% sample value 0.3 connect with 0.7 : [0.11 1.11 0.11]

% sample value 0.7 connect with 1.0 : [0.00 0.00 1.33]

% ———————

% H = [1.44 1.11 1.44]

%

%

%

% Example, Signal:

%

% XN=sin(2*pi*(1/2000)*(1:2000))/2+0.5;

% XS=sin(2*pi*(1/20)*(1:20))/2+0.5;

% figure,

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