How do i clip the wrist portion in a hand gesture image?

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Please suggest a matlab code for clipping the wrist portion in a hand gesture image.

Answers (1)

Hari
Hari on 24 Feb 2025
Hi,
I understand that you want to clip or remove the wrist portion from an image of a hand gesture using MATLAB.
I assume you have a binary or grayscale image of the hand gesture where the hand is distinguishable from the background, which will help in identifying the wrist region.
In order to clip the wrist portion from the image, you can follow the below steps:
Read and Preprocess the Image:
Load the image and convert it to a binary image if it’s not already. This helps in isolating the hand from the background.
image = imread('hand_gesture.jpg');
binaryImage = imbinarize(rgb2gray(image)); % Convert to binary
Identify Hand Contour:
Use the “bwboundaries” function to find the contours of the hand. This will help locate the wrist area.
boundaries = bwboundaries(binaryImage);
Locate the Wrist:
Analyze the contour to determine the wrist position. This can be done by identifying the narrowest part of the contour, often at the bottom of the hand.
% Example: Assume wrist is at the bottom 20% of the image
wristLine = round(size(binaryImage, 1) * 0.8);
Clip the Wrist:
Remove the wrist portion by setting the pixels below the identified wrist line to zero.
binaryImage(wristLine:end, :) = 0;
Display the Result:
Show the modified image to verify that the wrist has been clipped.
imshow(binaryImage);
Refer to the documentation of “bwboundaries” function to know more about its usage:
Hope this helps

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