How to detect the black object in gray background and rotate it?

Hello,

I have a black object in a gray background(Image1) and I like to rotate it. but when I use the below command for rotate it, it's rotate the whole frame (Image2),

img_R = imrotate(I,10);

I'm wondering is there any way to rotate just the object inside the image and not around it?

Any help would be appriciated.

Thank you

Iman

Answer 1

[Walter Roberson]

Not exactly . What you can do is detect the gray background and figure it it's RGB. Then rotate like you do. Now find the black parts and fill them with the same RGB.