How to find coordinates of the centroid of objects(found with bwlabel function) with area more than 3 pixels in the attached image?

Hello all, I have the attached image and using bwlabel MATLAB built-in function, I got the number of objects. Then I want to find the coordinates of the centroid of objects with more than three pixels;In the code I wrote bwlabel gives me 1279 objects and the with this line(allAreas= allAreas(allAreas>3);),the number of objects will be 665 in the workspace, but when I wrote the for loop,it started with the first object in the stats structure which its area is 1 pixel. Thanks

a = imread('PrimaryOrange.jpg');

bg=rgb2gray(a);

threshold = 20;

bw=bg> threshold;

out=bw;

L = bwlabel(out);

[labeledImage, numberOfObject] = bwlabel(out);

props = regionprops(labeledImage, 'Area');

allAreas = [props.Area];

stats = regionprops('table',labeledImage,'Area','Centroid',...
    'MajorAxisLength','MinorAxisLength','Perimeter')

   allAreas= allAreas(allAreas>3);

for i= 1 : numberOfObjects

     x_object= stats.Centroid(i,1);

     y_object= stats.Centroid(i,2);

     new_x= ceil(x_object )+ 30

     new_y=ceil(y_object)+30

     new_x_y= [new_x new_y]

     if BWdapi(new_x_y) == 1

     antibody = [antibody ; new_x_y]

     end

end

Answer 1

[Matt J]

You could just filter out all the objects that are too small before doing any of your other processing.

bw=bwareafilt( bg> threshold, [4,inf]);

Or, do

stats=stats(allAreas>3);

[Penny13]

Thanks, Filtering out works but stats=stats(allAreas>3) does not work and gives me this error

Error using colorthresholding_onecolor (line 101)

Subscripting a table using linear indexing (one subscript) or

   multidimensional indexing (three or

more subscripts) is not supported. Use a row subscript and a 

variable subscript.

[Matt J]

Then,

 stats=stats(allAreas>3,:);

[Penny13]

Thanks so much. This worked.