How to reduce the MSB bit at each step

>> a=imread('f.jpg'); >> b=imresize(a,[16 16]); >> d = cellstr(dec2bin(b,8))'; >> for i = 1 : rows for j = 1 : columns suppose d{i,j}==11000001 i want d{i,j} should be decreased to 7 bit next 6 bit next 5 bit upto 2 bit.i.e. d(i,j)=1000001; d(i,j)=000001; d(i,j)=00001; d(i,j)=0001; d(i,j)=001;d(i,j)=01;..i.e at each step msb bits should be removed.

[KSSV]

Repeated question.

http://in.mathworks.com/matlabcentral/answers/311158-how-to-remove-msb-bit-from-a-binary-number#answer_242424