Image acquisition in matlab

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NITHIN BHARADWAJ
NITHIN BHARADWAJ 2012-3-27
can we feed a hundred images sequentially at once in matlab with a single instruction?

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回答（5 个）

Image Analyst
Image Analyst 2012-3-27
What do you mean by "sequentially" when you have a single instruction? I would think that a "single instruction" would mean that you process all the images "at one time" rather than "sequentially." For example
output = myFunction(image1, image2, image3, ........image100);
You're passing all 100 images to myFunction "at the same time" even though internally myFunction may be processing them sequentially.
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NITHIN BHARADWAJ
NITHIN BHARADWAJ 2012-4-22
I have about a hundred images that I would like to combine to form a single image. How do I write these images into Matlab all at once?
Image Analyst
Image Analyst 2012-4-22
Try the montage() function or sum them and divide by 100. But I already said this above, and so did you, so we're going in circles here. You told Walter that it was too tough to do this
for k = 1:100
filename = % whatever it is.
thisImage = imread(filename);
if k == 1
sumImage = double(thisImage);
else
sumImage = sumImage+double(thisImage);
end
end
meanImage = uint8(sumImage/100);
How can we help you?

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Geoff
Geoff 2012-3-27
If you're trying to emulate camera image acquisition using stored images, you could set up a timer to deliver a set of images at a set frame rate:
doc timer
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NITHIN BHARADWAJ
NITHIN BHARADWAJ 2012-3-29
No, If I have part of a character in each of those images and i would like to have a final image with the final character on the image how do I do it?
Image Analyst
Image Analyst 2012-3-29
Huh??? Well, just throw away all images except for the final image. Or was something not explained properly?

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Jakob Sørensen
Jakob Sørensen 2012-3-27
Depends on how you want to combine them. If the file names are somewhat reasonable (i.e. identical like file001.jpg, file002.jpg, ...), it's rather easy to make. Then you just load one at a time into a new variable and then combine them in the end. Or you could load one, plot it, and clear the memory. Whatever suits you best. The code for loading them one at a time would be something like this:
addpath('pathname')
imageStruct = struct;
for c = 1:100
filename = sprintf('file%3.3d.jpg',c);
imageStruct.c = imread(filename);
end
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Walter Roberson
Walter Roberson 2012-3-27
http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

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NITHIN BHARADWAJ
NITHIN BHARADWAJ 2012-4-26
I need a simplified method for the following procedure:
a=imread('frame-1.tif')
b=imread('frame-2.tif')
c=imread('frame-3.tif')
d=imread('frame-4.tif')
e=imread('frame-5.tif')
f=imread('frame-6.tif')
g=imread('frame-7.tif')
h=imread('frame-8.tif')
i=imread('frame-9.tif')
j=imread('frame-10.tif')
k=imread('frame-11.tif')
l=imread('frame-12.tif')
m=imread('frame-13.tif')
n=imread('frame-14.tif')
o=imread('frame-15.tif')
p=imread('frame-16.tif')
q=imread('frame-17.tif')
r=imread('frame-18.tif')
s=imread('frame-19.tif')
t=imread('frame-20.tif')
u=imread('frame-21.tif')
v=imread('frame-22.tif')
w=imread('frame-23.tif')
x=imread('frame-24.tif')
y=imread('frame-25.tif')
z=imread('frame-26.tif')
z1=imread('frame-27.tif')
z2=imread('frame-28.tif')
z3=imread('frame-29.tif')
z4=imread('frame-30.tif')
z5=imread('frame-31.tif')
z6=imread('frame-32.tif')
z7=imread('frame-33.tif')
z8=imread('frame-34.tif')
z9=imread('frame-35.tif')
z10=imread('frame-36.tif')
z11=imread('frame-37.tif')
z12=imread('frame-38.tif')
z13=imread('frame-39.tif')
z14=imread('frame-40.tif')
z15=imread('frame-41.tif')
z16=imread('frame-42.tif')
z17=imread('frame-43.tif')
z18=imread('frame-44.tif')
z19=imread('frame-45.tif')
z20=imread('frame-46.tif')
z21=imread('frame-47.tif')
z22=imread('frame-48.tif')
z23=imread('frame-49.tif')
z24=imread('frame-50.tif')
z100=imlincomb(1,a,1,b,1,c,1,d,1,e,1,f,1,g,1,h,1,i,1,j,1,k,1,l,1,m,1,n,1,o,1,p,1,q,1,r,1,s,1,t,1,u,1,v,1,w,1,x,1,y,1,z,1,z1,1,z2,1,z3,1,z4,1,z5,1,z6,1,z7,1,z8,1,z9,1,z10,1,z11,1,z12,1,z13,1,z14,1,z15,1,z16,1,z17,1,z18,1,z19,1,z20,1,z21,1,z22,1,z23,1,z24,'uint8')
imshow(z100)
Image Analyst
Image Analyst 2012-4-26
For your Answer to your own question,.... see the FAQ for a variety of ways to process a sequence of files. http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
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Walter Roberson
Walter Roberson 2012-4-26
Yup. Toss them all into a cell array "z", then
t1 = num2mat(ones(numel(z),1));
t2 = [t1, z(:)];
z100 = imlincomb( t2{:}, 'uint8');

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