How do I turn an image jpg image into a matrix using the 'imread' command? and image analysis

Question

Harry 2013-6-21

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/79811-how-do-i-turn-an-image-jpg-image-into-a-matrix-using-the-imread-command-and-image-analysis

I know that I should use the `imread` command but I don't know how to retrieve an image from a particular file do I have to import it first? I did that and used the following:

>> M = imread(130510_120,jpg)
 M = imread(130510_120,jpg)
                  |
Error: The input character is not valid in MATLAB statements or
expressions.

Or do put the exact file location:

>> M = imread(C:\Users\bostock_h\Documents\Images\130510_120, jpg) M = imread(C:\Users\bostock_h\Documents\Images\130510_120, jpg) | Error: Unexpected MATLAB operator.

Or is there something else I'm doing wrong?

Also how do I make the resulting matrix into just n*m matrix which just gives the intensity of the elements without colour.