Need help to resolve error related to physical memory

Hello guys,

Hope you all are doing great. I am facing an error when I run the following code in Matlab. There is only one drive on my computer "c" and there is enough memory (more than 300gb) in it. Earlier matlab was not giving this error, but I don't understand why it is giving this error now.

Can anyone please help me to resolve this error. I would be thankful to you.

Here are my script

outdir = 'C:\Users\newfolder';

outprefix1 = "pic1_"; %string, not character vector!

img_suffix = ".tiff";

vid1 = videoinput('gentl', 1, 'Mono8');

src1 = getselectedsource(vid1);

vid1.FramesPerTrigger = 10;

vid1.ROIPosition = [2462 1092 415 1553];

vidlist = [vid1];

start(vidlist);

filename = 'C:\usuarios\abc_Graphs.xls';

framecount = 0;

counter=0;

while true

framecount = 1 + framecount ;

counter = counter +1;

pause(1800); %After every 900sec

img=getdata(vid1);

for i = 1:10

outname1 = fullfile(outdir, outprefix1 + counter + "_" + i + img_suffix);

imwrite(img(:,:,:,i), outname1);

end

start(vidlist);

if isfile(filename)

break

end

end

stop(vidlist);

Also, here are the error that I got while running this script

>> tencontinuousshot_code

Warning: The ROIPosition property was modified by the device.

Error event occurred at 14:14:34 for video input object: Mono8-gentl-1.

Unable to allocate memory for an incoming image frame due to insufficient free physical memory.

Unable to allocate memory for an incoming image frame due to insufficient free physical memory.

Error in tencontinuousshot_code (line 18)

pause(1800); %After every 900se

[John D'Errico]

Um, there is a difference between the RAM you have on your computer, and the disk space. That 300GB is your c drive, essentially a disk drive of some form, NOT RAM.

[Raushan]

Yeah you are right My computer has 8 gb RAM and this code worked fine with that previously. But this time it gives error. Can you give some suggestion to resolve this error without upgrading the RAM.

[Raushan]

@Image Analyst @Walter Roberson

Hello

can anyone of you please give some suggestion to resolve the above error without upgrading the RAM. Is it possible to use the drive space while saving the images. I am saving the images on Desktop and I have only one drive "c" on my computer having 300 gb Free space.

I looked at some online siurces too it seems people use following line of ciode to resolve it, but I am having one doubt if I use the below lines of code in my script then whether I will lost the image every time when it capture or it will be saved in my computer.

imaqmex('feature','-limitPhysicalMemoryUsage',false);

flushdata(vid1);

Please help me to clear this.

Thank you

[Walter Roberson]

Do the imaqmex('feature','-limitPhysicalMemoryUsage',false); once at the beginning, not within the loop.

I would suggest that you consider using backgroundPool or (if necessary) parpool and parfeval or parfeval . You would read the data in the main worker, and use parfeval() to queue writing to the disk. You might not gain any peformance past 3-ish simultaneous writers to the same drive, but it is typically possible to improve performance by spreading the work out to drives that are on different controllers.

Answer 1

[Diwakar Diwakar]

This code seems to be capturing video frames using a video input device and saving them as individual images.

The error message shows that your system does not have enough free physical memory to allocate for incoming image frames. This could be due to various reasons, such as running multiple memory-intensive processes or having limited RAM. To resolve this issue, you can try closing other applications or processes consuming a significant amount of memory to free up resources.

and your code:

outdir = 'C:\Users\newfolder';
outprefix1 = "pic1_";  % string, not character vector!
img_suffix = ".tiff";
vid1 = videoinput('gentl', 1, 'Mono8');
src1 = getselectedsource(vid1);
vid1.FramesPerTrigger = 10;
vid1.ROIPosition = [2462 1092 415 1553];
vidlist = [vid1];
start(vidlist);
filename = 'C:\usuarios\abc_Graphs.xls';
framecount = 0;
counter = 0;
while true
    framecount = framecount + 1;
    counter = counter + 1;
    pause(1800);  % After every 900 sec
    
    img = getdata(vid1);
    for i = 1:10
        outname1 = fullfile(outdir, outprefix1 + string(counter) + "_" + string(i) + img_suffix);
        imwrite(img(:, :, :, i), outname1);
    end
    
    start(vidlist);
    if isfile(filename)
        break;
    end
end
stop(vidlist);