checkDisplayRange error

Hello, I posted this question in a previous section, but I doubt it will get view so I am re-posting it to a new topic.

Odd, I am having the error again, and this time without the ability to fix it.

My data flow is MxNxK Logical -> double -> 1x1 Struct -> 4-D uint8, I get the same error: ?? Error using ==> checkDisplayRange at 22 HIGH must be greater than LOW.

using the rand values it works fine, so it must be a data problem. Here is my code:

clear all 
close all 
clc; 

fileIn= 'input.avi'; 
fileInfo = aviinfo(filein); 
nFrames = fileinfo.NumFrames;
Y=fileinfo.Height;
X=fileinfo.Width;
aviInfo= avifile(fout, 'compression', 'none',     'fps',fileinfo.FramesPerSecond); 
Stack=zeros([Y, X, nframes]);
for i = 1:nFrames %1 
movie_in = aviread(fin,i); 
[Stack(:,:,i),map]=frame2im(movie_in,i);
bwAreaOpenBW = bwareaopen(Stack,200);
L = bwlabeln(bwAreaOpenBW,26); 
s=regionprops(L,'Centroid','Area','PixelList','PixelIdxList');
movie_out=label2CC(L);
V=CC2RGB3(movie_out);
movie2avi(immovie(V),'Output');
end

I get this error output:

?? Error using ==>
checkDisplayRange at 22
HIGH must be greater than LOW.

Error in ==>
imageDisplayParseInputs at 215
common_args.DisplayRange =
checkDisplayRange(common_args.DisplayRange,mfilename);

Error in ==> imshow at 173
  [common_args,specific_args] =
  ...

Error in ==> immovie at 56
  imshow(X(:,:,:,k),map);

Error in ==> bwlabeltoavi at 22
movie2avi(immovie(V),'Output');

[Sean de Wolski]

what happens if you

implay(bwAreaOpenBW)

does it look correct?

what does

class(Stack)

return?

[D]

implay returns only the first image, the rest are blank, this seems to be the problem.

class(Stack) returns double which is expected.

Answer 1

[Sean de Wolski]

for i = 1:nFrames %1 
   movie_in = aviread(fin,i); 
   [Stack(:,:,i),map]=frame2im(movie_in,i);
end

I think you want the end of the for-loop there and then continue. Also bwareaopen will turn your double image into a logical, so make sure it's a logical beforehand.