morton scanning for image size of 256*256 .

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vishnu 2012-3-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/30888-morton-scanning-for-image-size-of-256-256

i found out this as for 4*4 matrix from matlab central

 clc;
 clear all;
 close all ;
 n=2;
 ind=morton(n);
 a=reshape(1:4^n,2^n,2^n);
 disp(a)

here is the matlab function

 function ind=morton(n);
 % MORTON(N) return the morton permutation order for array of size 2^N
 % e.g.
 % n=2;
 % matrix size is 2^n
 % ind=morton(n);
 % d=fix(rand(2^n,2^n)*10);
 % disp(d)
 % disp(d(ind))
 linind4=(1:4^n)-1; %start index count for array at zero
 ind4str=dec2base(linind4,4); %convert indices to base-4
 b1=dec2bin(str2num(ind4str(:,1))); %split each base-4 into two base-2numbers
 b2=dec2bin(str2num(ind4str(:,2)));
 rb=[b1(:,1) b2(:,1)]; %the rows are given by the first bits of b1 and
 b2
 cb=[b1(:,2) b2(:,2)]; %the columns are given by the second bits of b1 and b2
 r=bin2dec(rb)+1; %convert the row from bit to decimal
 c=bin2dec(cb)+1; %convert column
 ind=[2^n*(c-1)+r]'; %make a linear row index into array for easyaddressing
 %morton.m ends

----------------------------------------------------

i require to do this for whole image with out looping infinitely ..

can you please any one give the way by block processing

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vishnu 2012-3-2

i get infinite loop and can able to proceed it .. please any one help ?

vishnu 2012-4-9

how can we create an morton order?

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回答（1 个）

Walter Roberson 2012-3-2

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https://ww2.mathworks.cn/matlabcentral/answers/30888-morton-scanning-for-image-size-of-256-256#answer_39368

http://www.mathworks.com/matlabcentral/fileexchange/10496-listless-speck-lsk/content/mapping.m

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vishnu 2012-3-7

but i get error like this .. Maximum variable size allowed by the program is exceeded.

Error in ==> morton at 10

linind4=(1:4^n)-1; %start index count for array at zero

.. i am totally confused sir.. i take a image and those image values to be an array representation according to morton order .. its an assignment for me .. please help me .. i want to learn about this

Walter Roberson 2012-3-7

For the purpose of your morton code, n should be 8.

But that doesn't have anything to do with the code I referred you to, which is the code you asked about in your comment here. Do not use both routines together: only use one of them.

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