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How to extract the hand out of the background? (homework assignment)

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Tu Nguyen
Tu Nguyen am 12 Mär. 2022
Bearbeitet: DGM am 12 Mär. 2022
Dear all, I want 'my output' image like exactly 'ouput' image. I followed step by step on the intrunction posted here.
Can anyone help me please?
close all;
clear all;
I1 = imread('hands.png');
I2 = imread('balcony.png');
gr = im2gray(I1);
threshold_value = graythresh(gr);
bw = im2bw(gr);
binary = bw<threshold_value;
binary_I = imfill(binary,'holes');
mask = I1;
mask(~bw) = 0;
ig = im2gray(mask);
output = bitand(ig,I2);
  2 Kommentare
Image Analyst
Image Analyst am 12 Mär. 2022
You forgot to post 'hands.jpg' and 'balcony.jpg'. Please do so after reading this:
Tu Nguyen
Tu Nguyen am 12 Mär. 2022
Yes sir, I already read and upload the images. If you know, please help me fix the code

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Akzeptierte Antwort

DGM am 12 Mär. 2022
Bearbeitet: DGM am 12 Mär. 2022
If you're trying to create the composite image:
FG = imread('');
BG = imread('');
mask = FG<210; % basic thresholding
outpict = uint8(double(FG).*mask + double(BG).*(~mask)); % compose image
Alternatively, you can go to extra lengths to improve the masking:
mask = FG<210; % same thresholding
mask = imerode(mask,ones(7)); % shrink mask to remove edge banding
mask = imgaussfilt(double(mask),1.5); % feather mask back toward original edges
outpict = uint8(double(FG).*mask + double(BG).*(1-mask)); % compose

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