WIll imtransform shift the center?

2016 7 30
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更新时间：2016 8 1
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Hi, I am trying to rotate the image by using imtransform. However I realise that it is different to imrotate as I cant define the center. I believe that by using the imtransform will shift the image center. Is there a way that I can define the center point for transformation or I better to use imrotate instead? Sorry for asking stupid question.

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Marco Yu
Marco Yu 2016-8-1
编辑：Marco Yu 2016-8-1
to make this clear, I have a image which size 200x200, then I want to change it to 300x300 because I don't want information loss as I will rotate the image. therefore, the image center changed from 100,100 to 150,150(theoretically). Then I would apply imtransform to the 300x300 image, is there a way that I can transform the image from the origin(0,0) to somewhere I define? The reason of I need to use imtransform is because I have a TForm, as a result I think by using imtransform/imwrap would be the best way to handle the image. I am not sure whether I am right or not.

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Image Analyst
Image Analyst 2016-7-30

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Don't use imtransform to shift the center. Use imtranslate() instead.

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Marco Yu
Marco Yu 2016-8-1
编辑：Marco Yu 2016-8-1
thank you for helping. But this is not what I want sorry :( I am trying to transform the image i.e resize and rotate. However I think by using imtransform will rotate the image from point (0,0) is there a way that I can define the rotation point instead?
Image Analyst
Image Analyst 2016-8-1
Use the 'loose' option of imrotate. It will enlarge the canvass enough to contain the image. It will not clip corners off as they rotate out of the original matrix.

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