Problem using blockproc for a very large image

Sarah Hewes

2012 7 30

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4 次查看（30 天）

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I'm trying to outline each cell in a large image.

Here is the relevant piece of code:

function blockanalyze(cells, rings)

fun = @(block_struct) outline(block_struct.data);

size = block_struct.imageSize/9

largesegmentedcells = blockproc(cells, size ,fun);

    function outline(cellblock)
        I = rgb2gray(cellblock);
        threshold = graythresh(I);
        bw = im2bw(I,threshold);
        [~, threshold] = edge(I, 'sobel');
        fudgeFactor = .5;
        BW = edge(I,'sobel', threshold * fudgeFactor);
        se90 = strel('line', 3, 90);
        se0 = strel('line', 3, 0);
        BWdilate = imdilate(BW, [se90 se0]);
        BWnobord = imclearborder(BWdilate, 4);
        BWopen = bwareaopen(BWnobord,500); %this is the filter
        BWclose = bwmorph(BWopen,'close');
        BWfill = imfill(BWclose, 'holes');
        BWoutline = bwperim(BWfill);
        segmentedcells(BWoutline) = 255;
    end
end