Shift features of cropped image

I first detect face in an image and then extract features of face part. Then I wanto plot points on whole image but feature points are shifted as I found features on cropped image. How can I handle this issue?

face = imcrop(grayimage,[x,y,width,height]); 

points = detectSURFFeatures(face);

imshow(I); hold on;
plot(points.selectStrongest(10));

[KALYAN ACHARJYA]

Its already done or you wish to do same?

Answer 1

[Image Analyst]

You displayed the original image instead of the cropped face image. Try this:

face = imcrop(grayimage,[x,y,width,height]); 
points = detectSURFFeatures(face);
imshow(face); 
hold on;
plot(points.selectStrongest(10));

[Ömer Faruk Kurular]

No I am extracting features from face but show points on whole image.

[Image Analyst]

Then you need to add x to the x values, and y to the y values since the (x,y) values you get from detectSURFFeatures will have the cropped image, not the original face, as the image/origin.