How to found center of an image?

Question

I have faced trouble how to find center of an image and write it to different image. Situation is that I have image (for e.g. 800X500) and I need to crop exactly (50X50 or 70X70) center of it with img.getSubimage(x, y, w, h).

Sizes will be different every time for new image.

How could I calculate X and Y to get 50X50 subImage from the image center?

Thanks in advance.

img.getSubimage(x, y, w, h) - X and Y are not coordinates of center. * @param x the X coordinate of the upper-left corner of the * specified rectangular region * @param y the Y coordinate of the upper-left corner of the * specified rectangular region

Have you tried solving it on paper first? What coordinates would you use for examples you gave in your question? — Pshemo, Aug 21 '13 at 17:01
See also these related thumbnail [examples](http://stackoverflow.com/q/15961412/230513). — trashgod, Aug 21 '13 at 17:02

score 5 · Accepted Answer · answered Aug 21 '13 at 17:00

5

int bigwidth = 800;
int bigheight = 500;
int cropwidth = 70;
int cropheight = 70;
img.getSubimage((bigwidth - cropwidth) / 2, (bigheight - cropheight) / 2, cropwidth, cropheight);

answered Aug 21 '13 at 17:00

C. K. Young

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How to found center of an image?

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