i have a binary image with gird i want to select each segments in a grid
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Raghu Rao
am 20 Feb. 2017
Kommentiert: Raghu Rao
am 22 Feb. 2017
Help me to extract or select a region in a grid because i want to find foreground pixels in each grid in the attached image.
![](https://www.mathworks.com/matlabcentral/images/broken_image.png)
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Image Analyst
am 20 Feb. 2017
What are the rows and columns of your grid lines? You know how to compute the center of mass - it's just the mean of the rows and columns in the grid.
thisGridTile = binaryImage(row1:row2, column1:column2);
[y, x] = find(thisGridTile);
centroidx = mean(x);
centroidy = mean(y);
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Image Analyst
am 20 Feb. 2017
I don't know exactly what that means, but to extract a grid tile from the large image, if you know the rows and columns, you can simply do this:
thisGridTile = binaryImage(row1:row2, column1:column2);
beyond that then you will need to specify exactly what information you want when you say you want to "find" or "select" the white foreground pixels in each tile. In my mind they're already automatically selected. What else more do you want???
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Walter Roberson
am 21 Feb. 2017
blockproc() large blocks over the image. Have blockproc call regionprops on the binary negation of the image to determine the centroid of the black pixels.
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