Adding single dimension float array values

Question

I have two questions regarding the Evil Dicom library.

I know with the floats function, all of the pixel data is contained as float elements in a one dimensional array. My question here is how can I add up the individual elements to get one value?

After I have multiplied a black and white mask with the original image, how can I then add up the non-zero values in the image? Do I also use the floats function to get the data as an array and then add up the array elements? If not, how can I add up the pixels in the image from top left corner to bottom right corner?

What have you tried? It seems like you would like the Stack Overflow community to do your research for you. — George Stocker, Jul 06 '12 at 17:27

score 0 · Accepted Answer · answered Jul 06 '12 at 17:25

As far as I know there is no special functionality in the Evil DICOM library for these operations, but there is always LINQ.

If you are looking for the sum of all pixel elements:

var imgMtx = new ImageMatrix("image.dcm");
var sum = imgMtx.Image.Sum();

If you are looking for the sum of the non-zero values:

var nonZeroSum = imgMtx.Image.Where(val => val != 0.0f).Sum();

If you are looking for the average value, simply replace Sum with Average.

Adding single dimension float array values

1 Answers1