How to assign an image to another with a black frame?

1 次查看（过去 30 天）
Edwin Joy
Edwin Joy 2019-3-2
编辑： Edwin Joy 2019-3-2
I used the code given below to assign another picture to a black filled picture. The given picture has to fit into the black background at the center so that it looks as if it is framed.
But the result is:
1.JPG
I'd like the pic I loaded, (that is j) inside the box. I tried a lot! Please help! Many thanks in advance! :)
j=imread('1.jpg');
[na, nb, nc]=size(j);
b=40;
j_big=zeros(na+2*b, nb+2*b, nc);
j_big(b+1:b+na, b+1:b+nb, :)=j;
imshow(j_big);

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2019-3-2
Why not just use padarray()?
  1 个评论
Edwin Joy
Edwin Joy 2019-3-2
编辑：Edwin Joy 2019-3-2
Oh okay. Thank you!
But I still don't understand why I just get some pixels scattered around the image when I use the code mentioned. I even tried to use loops and copy pixel by pixel to find out the error but it's still giving me the same result.
EDIT:
Yay! I got it. Well it appeared when I changed the array to unsigned int8.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Processing Toolbox 的更多信息

标签

产品


版本

R2018a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by