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

//----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

[Image Analyst]

You forgot to attach image14.jpg so we can run your code.

Answer 1

[Mischa Kim]

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.

[vishwas h s]

hi kim... 1)the three functions are located in three different files.. 2)then the instructions after the comment symbol are intentionally added to check for the correctness of the code...the are not needed in the code...

[Mischa Kim]

OK. Then I suggest that you move all function files into the same folder and then make this folder the current MATLAB folder:

[Suraj Kamya]

Hi, Check out the attached files, Now code is perfectly running. Simply Run reswhe_test.m and select any image. Enjoy! :)

Regards, Suraj Kamya <mailto:[e-mail] [e-mail]>

[shawana khan]

thanks

Answer 2

[Amini]

please put the full code here , i really need it.

thanks

[shawana khan]

upper code is full suraj qumar gave it