want to know about the imcrop function's arguments.

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tina jain
tina jain 2015-3-12
评论： Image Analyst 2015-3-12
one of the format of the function imcrop(I,[75 68 130 112]). want to know how to know about the value of coordinates.

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Stephen23
Stephen23 2015-3-12
编辑：Stephen23 2015-3-12
Read the very helpful documentation for imcrop. It explain how to use the function and all of the different possible inputs. In particular " I2 = imcrop(I, rect) crops the image I. rect is a four-element position vector[xmin ymin width height] that specifies the size and position of the crop rectangle."
The values are in pixels.
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Stephen23
Stephen23 2015-3-12
编辑：Stephen23 2015-3-12
These are inputs. You choose the inputs to solve your problem: cropping an image. How you want to crop the image depends on you, not me.
The values that you are asking about define the part of image I that will be kept after being cropped. You should try some values and see what effect it has: trust me, your computer won't explode if you pick some values and try them out! Use imshow to view an image.
Image Analyst
Image Analyst 2015-3-12
xmin is the left column number. ymin is the top row number. I think the width and height are from pixel center to pixel center rather than the exact number of rows or columns. That means a difference of 1 row or column. Just try some things and see.

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