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Cut images with equal size and position

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agung pratama 2020-9-9

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评论： Image Analyst 2020-9-22

采纳的回答： KSSV

Hello guys, how can i cut some images into same size and i can set (x1,y1) dan (x2,y2) for images cutting.

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KSSV 2020-9-9

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在 MATLAB Online 中打开

Yes i can be done....define your (x1,y1) and (x2,y2). Note that they should be positive integers. Let I be your image.

iwant = I(x1:x2,y1:y2,:) ;

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111.jpg
untitled23.png

im using this and got the imgage still with border and there is blue plus sign i dont know where it come from.

KSSV 2020-9-9

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Show us the code which you have tried. Did you go through imcrop?

agung pratama 2020-9-9

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编辑：agung pratama 2020-9-9

在 MATLAB Online 中打开

I=imread ('111.jpg');
J = imcrop(I);
iwant = I(100:900,100:900,:) ; 

this is the code

KSSV 2020-9-9

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在 MATLAB Online 中打开

imshow(iwant)

it looks fine right? I don't see any problem in this.

agung pratama 2020-9-9

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untitled23.png

Can I remove white border so I only get the images, and why at the upper-right there is plus sign appear?.

Walter Roberson 2020-9-9

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在 MATLAB Online 中打开

Do not use imcrop() interactively for this purpose.

I = imread ('111.jpg');
iwant = I(100:900,100:900,:); 

KSSV 2020-9-9

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I am getting fine image.

Walter Roberson 2020-9-9

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The plus sign and white border are from the imcrop(I) step. When you call imcrop() with no parameters, it looks for an image in the current figure and starts an interactive crop tool. When you call imcrop() with one parameter, it puts up the data as an image and starts an interactive crop tool. The crop tool puts up the + marker to show where cropping would occur.

You do not want to do interactive cropping: you already know the coordinates you want. You do not need imcrop() for this purpose; you can just access the array elements.