Issue with pixel size

[ysudarikova]

Hello Austin, thank you for creating and sharing this great tool!

I am trying to run my 2D time stack in the Mitometer App. The issue seems to be with my pixel size, which is between 0.22 and 0.39 for various images I've tried. The App does not let me run images with pixel sizes larger than ~0.28. I get the following error:

Array indices must be positive integers or logical values.

Error in optimizeSigmaThresh (line 108)
threshOptimal = threshMatrix(floor(median(rowMin)));

Error in GUI2/Start2DButtonPushed (line 1098)
[app.sig,app.thr,costs] = optimizeSigmaThresh(ImBgRemoved);

Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback (line 386)
Error while evaluating Button PrivateButtonPushedFcn.

Is there a way to overcome this threshold?

Many thanks for your help!