What is the function pixelIdxListsn?

Hello! I was given and asked to use a function called pixelIdxListsn, but because it was in .mexw64 file, and I am using a Mac so I had to get it in the .m format instead. I was told to get it from the Image Processing Toolbox, but realized that it actually does not belong there. Does anyone know where I can actually get the function, and what is it about? Thank you!

Answer 1

[Image Analyst]

There is no such function in the Image Processing Toolbox as you know. To find alternate code that does the same thing I'd have to know what that function does. I would go back to the author of the .mexw64 file - whoever built/compiled it - and ask them for the source code.

[Image Analyst]

What does it say in the comment just before they call pixelIdxListsn()? That should be some clue as to what it does. If it's a bad, poorly-written program and there are no comments, then just post the entire m-file and we'll try to figure it out from the context.

[Hsiu]

Mm, I am not too sure who the author is as well, and thus I cannot find the source code. What do you mean by the comment? How do I attach a file here though? Thank you!

[Image Analyst]

There should be a comment right before you call the function, something like

% Now we call pixelIdxListsn() to do whatever.....
[output1, output2] = pixelIdxListsn(input1, input2, input3);

If the code is not commented, that's a sign of a bad programmer. You can attach your program with the paper clip icon, above teh dito box when you're typing in a response here.

[Hsiu]

Oh! The function isn't called though. It was included in a folder of functions that I am supposed to put in my pathway, but it did not work thus I realized that I cannot use .mexw64. Attached is the file! Thank you!

[Image Analyst]

OK so it's a mexw64 file (a DLL). Where is your code where you're calling loadlibrary() and then calling the function?

[Hsiu]

Erm do you mean where I am gonna use this function? It is as attached. Included in the pathway is a lot of other functions as well, but I am trying to run this attached script. When I do it, it stated the following error:

Undefined function 'pixelIdxListsn' for input arguments of type 'double'.

Error in bwconncomp_nd (line 12) pixelIdxList = pixelIdxListsn(A,conn);

Error in bwconncomp (line 107) [CC.PixelIdxList,CC.NumObjects] = bwconncomp_nd(BW, conn);

Error in RemoveSmallestComponents (line 12) CC = bwconncomp(image,connectivity);

Error in cav_initial_alignment (line 175) seg_im = RemoveSmallestComponents(seg_im,10000,26,1);

Error in FindTheLid (line 19) [R,S,dimensions,LVpool,RVpool] = cav_initial_alignment(Ventr,hPH,'BiV',[]);

So basically I need the function pixelIdxListsn?

Answer 2

[the cyclist]

This article explains it.

Answer 3

[Hsiu]

Erm do you mean where I am gonna use this function? It is as attached. Included in the pathway is a lot of other functions as well, but I am trying to run this attached script. When I do it, it stated the following error:

Undefined function 'pixelIdxListsn' for input arguments of type 'double'.

Error in bwconncomp_nd (line 12) pixelIdxList = pixelIdxListsn(A,conn);

Error in bwconncomp (line 107) [CC.PixelIdxList,CC.NumObjects] = bwconncomp_nd(BW, conn);

Error in RemoveSmallestComponents (line 12) CC = bwconncomp(image,connectivity);

Error in cav_initial_alignment (line 175) seg_im = RemoveSmallestComponents(seg_im,10000,26,1);

Error in FindTheLid (line 19) [R,S,dimensions,LVpool,RVpool] = cav_initial_alignment(Ventr,hPH,'BiV',[]);

So basically I need the function pixelIdxListsn?