Gaussian blur that's a multiple of 10 will skew the image.

Question

Gaussian blur that's a multiple of 10 will skew the image.

jawngee opened this issue 13 years ago · comments

Jon Gilkison commented 13 years ago

Any blur that's a multiple of 10 skews the image 45 degrees.

Andrew Griffiths · Answer 1 · Fri Sep 02 2011 07:02:15 GMT+0800 (China Standard Time)

weird, do you know if it's only multiples of 10? I'll have a look and see if I can figure out what's going on.

Andrew Griffiths · Answer 2 · Fri Sep 02 2011 07:02:29 GMT+0800 (China Standard Time)

whoops - accidently closed instead of just commenting.

Jon Gilkison · Answer 3 · Fri Sep 02 2011 14:06:10 GMT+0800 (China Standard Time)

Yeah it's any multiple of 10. I'm not a math guy, but my only guess is the kernel size?

Andrew Griffiths · Answer 4 · Tue Sep 27 2011 14:28:53 GMT+0800 (China Standard Time)

still haven't had a chance to look at this, been super busy and am on holidays for the next month, perhaps in nov ;(

ThaiSeb · Answer 5 · Tue Nov 15 2011 01:21:48 GMT+0800 (China Standard Time)

Well, it seems it also happen with other radius values that are not odd. Based on some testing with different image sizes, the images can get skewed if the radius is not odd.

Andrew Griffiths · Answer 6 · Tue Nov 15 2011 08:15:02 GMT+0800 (China Standard Time)

can either of you provide a radius which will cause the example to skew on an actual device?

I've done some testing this morning and can't find any radius which causes skewing on a phone. The simulator skews with radius 10 but I believe this to be a bug in the simulator code.

You can easily try different radius by modifying the switch statement for the "advanced" section in the example