Height and width of an image

Hi, is it possible to find the height and width of the object inside an image? I had attached an image with white and black line to find width and height value

[KSSV]

Read about imdistline, regionprops.

[Wong Wei Weng]

can it be 2 value? one horizontally and one is vertically?

Answer 1

[ANKUR KUMAR]

Try this,

A=imread('testing.jpg');
AA=rgb2gray(A);
len=max(arrayfun(@(x) length(find(AA(:,x)~=255)),1:800))
bred=max(arrayfun(@(x) length(find(AA(x,:)~=255)),1:800))

[Wong Wei Weng]

is it possible to show the imdistline?

[ANKUR KUMAR]

Yes. It's possible.

h = imdistline(gca,[x1,y1],[ x2,y2]);

Just give the coordinates in the above in place of x1,y1,x2 and y2.

If you are feeling difficulty in setting the x1,y1,x1 and y2, use this and drag the line as per your wish.

h = imdistline(gca);

[Wong Wei Weng]

but can i save the value after i drag the line?

[ANKUR KUMAR]

Why you wish to save. The program gives automatically that value.

Make sure, you are using imshow(A) before using imdistline.

The value over the dragged line and the resulted value len=max(arrayfun(@(x) length(find(AA(:,x)~=255)),1:800)) are same.

[Wong Wei Weng]

okok, is it possible to drag the distline in matlab gui?

[ANKUR KUMAR]

Yes.

[Wong Wei Weng]

is it I straight used in the axes or?

[ANKUR KUMAR]

Please refer these links:

https://in.mathworks.com/matlabcentral/answers/102384-how-do-i-make-my-gui-plot-into-an-axes-within-the-gui-figure-rather-than-inside-of-a-new-figure-in-m

https://in.mathworks.com/matlabcentral/answers/324609-assigning-plot-to-an-existing-axes-matlab-gui

https://in.mathworks.com/matlabcentral/answers/222578-display-image-in-axes-matlab-gui

[Guillaume]

Note:

nnz(something)

is simpler and a lot faster to compute than:

length(find(something))