How to crop 1 inch

I want to crop an image with 1 inch for every side, i dont know kow much pixel 1 inch in matlab so

How do i crop an image with 1 inch or 2,54 cm.

Can someone provide the code?

[Rik]

You will need to know the resolution of your image in terms of dpi (/ppi): dots per inch. That is sometimes stored in the image metadata, but otherwise is something you will have to determine yourself.

Answer 1

[Image Analyst]

You will need to know how many pixels per inch there are. You can do this by drawing a line along some object in your image that has a known size in inches. See attached spatial calibration demo.

[pizzaa]

ty too image analyst, ur a god

Answer 2

[Ludo Houben]

Hi Pizzaa

Maybe this can help:

https://nl.mathworks.com/help/images/crop-an-image.html

https://nl.mathworks.com/help/images/crop-image-using-image-viewer-app.html

Cheers

Ludo

Answer 3

[Sushma Swaraj]

Hi, We use the 'imcrop' function to crop an image.

% Read the image
image = imread('your_image.jpg'); % Replace 'your_image.jpg' with the file path of your image

% Get the image size in pixels
[height, width, ~] = size(image);

% Calculate the desired margin size in pixels
marginInches = 1; % 1 inch margin
pixelsPerInch = get(0, 'ScreenPixelsPerInch'); % Get the screen resolution in pixels per inch
marginPixels = round(marginInches * pixelsPerInch); % Convert inches to pixels

% Calculate the crop region
cropRect = [marginPixels + 1, marginPixels + 1, width - 2*marginPixels, height - 2*marginPixels];

% Crop the image
croppedImage = imcrop(image, cropRect);

% Display the cropped image
imshow(croppedImage);

Hope it helps!

[pizzaa]

Thanks ur a beast