How do I repair noisy picture and invert the bw color?

조회 수: 6(최근 30일)
Hello, new to the matlab app, I'm trying to repair this image
to be like this picture (or close)
Any help would be much appreciated.
Thanks.
  댓글 수: 2
Dustkin Jou
Dustkin Jou 2022년 11월 16일
using this
clc;
close all;
clearvars;
img = imread('7.jpg');
rotated = imrotate(img,-90);
gray = rgb2gray(rotated);
bw = imbinarize(gray);
comp = imcomplement(bw);
se = strel('line',30,90);
erode = imerode(comp,se);
dil = imdilate(erode,se);
erode1 = imerode(dil,se);
dil1 = imdilate(erode1,se);
figure(1);
imshow(dil1);
this is the output, im trying to get smoother in the tip and bottom

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DGM
DGM 2022년 11월 16일
편집: DGM 2022년 11월 16일
This is a very lazy answer. Consider this more a matter of cleanup than optimizing the object reconstruction. I'm not going to pretend that this is complete or robust.
img = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1195578/image.jpeg');
gray = rgb2gray(img); % convert to gray first; reduces cost of subsequent ops
gray = imrotate(gray,-90); % not every single output needs to be a unique variable
bw = ~imbinarize(gray); % equivalent to imcomplement(binaryimage)
se = strel('line',30,90); % idk why this was selected
bw = imopen(bw,se); % opening is equivalent to dilate(erode(x,se),se)
% opening with a fixed strel is idempotent
% i.e. opening again with the same strel does not change the result
% added
bw = imclose(bw,strel('disk',100,0)); % fills some holes and closes some gaps
bw = bwareaopen(bw,10000); % gets rid of small specks
bwoutline = bwperim(bw);
% that 1px outline won't show up when rescaled here
% due to display interpolation.
% fatten the line so it shows up
bwoutline = imdilate(bwoutline,strel('disk',7));
imshow(bwoutline);
Not really there, but it's ... what it is.
  댓글 수: 3
Dustkin Jou
Dustkin Jou 2022년 11월 17일
Thank you. This is the output i was looking for, thank you so much

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