Is Pixel Interpolation possible in MATLAB? If so, how?

10 次查看（过去 30 天）
Ali Almakhmari
Ali Almakhmari 2022-7-30
回答： Image Analyst 2022-7-31
Hey guys. So I have a picture, but unfortunately, some pixels in it are completely black (the RGB values are 0,0,0). For those specific pixels, I would like to do some sort of pixel interpolation (replace those black pixels by a pixel that is interpolated from the surrounding area). I tried doing it myself but I struggled with multiple things, one of them is how to tell MATLAB what are the pixels that I want to replace and what are the pixels that I want it to interpolate from. Any ideas?

请先登录，再回答此问题。

采纳的回答

DGM
DGM 2022-7-30
Ran in:
You should be able to use regionfill()
% a test array with a zero pixel
A = uint8(randi([0 255],5,5));
A(3,3) = 0;
imshow(A)
% create a mask that describes the zeros
mk = A == 0;
% inpaint
B = regionfill(A,mk);
imshow(B)
  2 个评论
Ali Almakhmari
Ali Almakhmari 2022-7-30
I tried implementing this on my image but its hardly working cause its a colored image. I tried comverting it to gray and work on it, which it did, but converting it back to colored after using regionfill is very diffcuilt. Any suggestions?
Image Analyst
Image Analyst 2022-7-31
Maybe regionfill try it on each channel one at a time
% Split RGB image apart into separate color channels.
[r,g,b] = imsplit(rgbImage);
% Fill holes in each channel individually.
r = regionfill(r, mask);
g = regionfill(g, mask);
b = regionfill(b, mask);
% Recombine
rgbImage = cat(3, r, g, b);
There are other ways (some are perhaps more "accurate"), but this might be the simplest and be good enough.

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2022-7-31
You might take a look at inpaintCoherent or inpaintExemplar.

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

R2020b

Community Treasure Hunt

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

Start Hunting!

Translated by