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hi..i am writing the code for recursive mean separate histogram equalization..i am getting an error called "Undefined function 'averpixcal' for input arguments of type 'double'."when calling the function 'averpixcal'..code is attached for reference

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vishwas h s
vishwas h s 2014-2-13
评论： shawana khan 2019-8-16
//----main module-----// PicOri=imread('C:\Users\Public\Pictures\Sample Pictures\image14.jpg'); % if isgray(PicOri)==0 PicGray=rgb2gray(PicOri); % else % PicGray=PicOri; % end figure(1),imshow(PicGray),title('Ô­»Ò¶ÈͼÏñ');
h=imhist(PicGray); % figure(2),plot(h),title('ԭͼÏñÖ±·½Í¼');
[m,n]=size(PicGray); PicHEt=zeros(m,n);
max = double(max(PicGray(:))); min = double(min(PicGray(:)));
r=1; length=2^r; Xm=zeros(1,length); Xm(1)=max+1; Xm(2)=min+1;
for i=1:r for j=1:2^(i-1) Xm(2^(i-1)+j+1)= averpixcal(h,Xm(2^(i-1)-j+2),Xm(2^(i-1)-j+1)); end Xm=sort(Xm,'descend'); end Xm=sort(Xm);
for i=2:2^r [row,col]=find((PicGray>=Xm(i-1)-1)&(PicGray<=Xm(i)-2)); PicHEt=FuncHE(PicGray,PicHEt,row,col,h,Xm(i-1)-1,Xm(i)-2,m,n); end [row,col]=find((PicGray>=Xm(2^r)-1)&(PicGray<=Xm(2^r+1)-1)); PicHEt=FuncHE(PicGray,PicHEt,row,col,h,Xm(2^r)-1,Xm(2^r+1)-1,m,n);
PicHE=uint8(PicHEt); h1=imhist(PicHE); figure(3),imshow(PicHE),title('¾ùºâºóµÄͼÏñ'); figure(4),plot(h1),title('¾ùºâºóµÄÖ±·½Í¼'); ---------------------------------------------------------------------------------
//---function averpixcal----// function Xm=averpixcal(h,begin,ending)
PixSum=0; Sum=0; for i=begin:ending PixSum=(i-1)*h(i)+PixSum; Sum=h(i)+Sum; end Xm= double(round(PixSum/Sum)) -----------------------------------------------------------------------------------
//-----function to find the histogram equalization-------// function PicHEt=FuncHE(PicGray,PicHEt,row,col,h,min,max,m,n)
pix=size(col,1);
%PZ=zeros(1,Xm(2)-1); PZ=zeros(1,max-min+1);
for i=min+1:max+1 PZ(i-min)=h(i)/pix; end
%S=zeros(1,Xm(2)-1); S=zeros(1,max+1);
S(min+1)=PZ(1); for i=min+2:max+1 S(i)=PZ(i-min)+S(i-1); end
FuncHE=min+(max-min)*S;
for k=1:pix PicHEt(row(k),col(k))=floor(FuncHE(PicGray(row(k),col(k))+1)); end

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回答（2 个）

Mischa Kim
Mischa Kim 2014-2-13
编辑：Mischa Kim 2014-2-13
Vishwas, a couple of thoughts:
  • Comments in MATLAB appear after percent symbols. E.g., % This is a comment
  • Is the code you show contained within one function file? Make sure that the functions are in the MATLAB path using the which command in the MATLAB prompt:
>> which averpixcal % in case the function is located in a separate function file
  • Please edit your question for better readability.
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Amini
Amini 2014-11-5
please put the full code here , i really need it.
thanks

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