Calculate the sum of the pixel values for the blue color, with a picture as an input.

NOTE: The picture will be provided as a matrix of size Height*Width*Colors

To test your algorithm, you can import the picture to MATLAB with the command 'inputImage=imread('http://static0.therichestimages.com/wp-content/uploads/2014/02/san-sebastian.jpg')'; and introduce 'inputImage' in your algorithm. The output should be '54791054'