Determine missing locations from a grid

Question

Jason 2016-10-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/309219-determine-missing-locations-from-a-grid

dataCSV.csv

Hi.

I have a set of locations indicated by the "mask" image below. (This is obtained from a raw grayscale image using thresholding and regionprops).

I need to obtain the centroid positions of each of these spots and then project back onto my raw grayscale image to obtain pixel intensity and measure the FWHM. The problem is that in the mask image (=binary image), there are the occasional missing spots as circled in red above.

Is there a way to:

1: Determine if there are any missing spots 2: Fill in the guess location of the missing spots by using adjacent spot information or some othe rmethod

I do have the coordinates of each detected spot - see attached file

In short, the first column is x coordinate (horizontal), and 2nd column is y coordinate (vertical)

i.e.

        5    305     48   1667
        4    372     43   1901
        4    405     42   2605
        4    438     36   1897
        4    505     47   3337
        3    571     23   1456
        3    637     31   2010
        3    671     12    953
        3    770     24   1517
        3    804     23   2167

Its to be noted that the grid isn't exactly regular, over the width of my image (which is much bigger than the one shown above), I expect the grid to increase by around 1-2 pixels with respect to the central region due to optical distortion.

Thanks for any help Jason