MATLAB: Is there a way to identify each pixel of an image. Help needed!

image processingscanscanning element

Is there a way to create a scanning element that could scan each pixel of a bw image and perform some operations, if the pixel being scanned is white or just advance to the next pixel if it is black. I don't want pixel repetition. Please help me ASAP. I'm doing this for my college project!!

Thanks in Advance!

Best Answer

Sure, a for-loop!

I = your_image
for ii = 1:numel(I)
 if I(ii)
    do_something_with(I(ii))
 end
end

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MATLAB: Help with plotting needed!

Use plot

clc,clear
HQ10 = [1 1.5 1.7 1.6 1.8 2.1 2.2 2.5];
HQ100 = [1.9 2 2.2 2.5 2.7 2.9 3 3.1];
HQ1000 = rand(1,length(HQ10))*3;
cmap = jet(8);                        % color data
x1 = [-1 1]*0.1;                      % line length
hold on
for i = 1:length(HQ10)
    h(1) = plot(x1+1,HQ10(i)+x1*0);
    h(2) = plot(x1+2,HQ100(i)+x1*0);
    h(3) = plot(x1+3,HQ1000(i)+x1*0);
    set(h,'color',cmap(i,:))
    set(h,'linewidth',3)
end
hold off

MATLAB: Help with plotting needed!

Assuming that the intensities are numeric and that each element in the cell array is a matrix of 1x1000 dimension, then why not just concatenate all of the data together into a 100x1000 matrix, where each row in the matrix is the 1000 intensities for a single lund cell?

 lundCellData = zeros(100,1000);
 for k=1:100
    lundCellData(k,:) = cellArray{k}; % cellArray is the 1x100 element cell array
 end

And then just use imagesc to plot the data

 imagesc(lundCellData);

This will plot the time data along the x-axis, and the lund cell numbers along the y-axis.

Try the above and see what happens!

Best Answer

Related Solutions

MATLAB: Help with plotting needed!

MATLAB: Help with plotting needed!

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