How rescale and save image in Matlab?
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I am reading a 'mhd' file which it's giving me an info like below:
Filename: 'patient0001_2CH_ED_gt.mhd'
Format: 'MHA'
CompressedData: 'false'
ObjectType: 'image'
NumberOfDimensions: 3
BinaryData: 'true'
ByteOrder: 'false'
TransformMatrix: [1 0 0 0 1 0 0 0 1]
CenterOfRotation: [0 0 0]
AnatomicalOrientation: 'RAI'
Offset: [0 0 0]
PixelDimensions: [0.3080 0.1540 1.5400]
Dimensions: [549 778 1]
ElementNumberOfChannels: '1'
DataType: 'uchar'
DataFile: 'patient0001_2CH_ED_gt.raw'
BitDepth: 8
HeaderSize: 384
Then by another function I will read the info, then produce the image. Then, I need to rescale image dimension with pixel dimension ( PixelDimensions: [0.3080 0.1540 1.5400]), and I used imagescin order to do this like below code, but it change the unique value of my image. Is there any way to rescale the image without imagesc? alos imagesc produce 3 channels which I don't want, and apparently all channels are same.
rows = 1:info.Dimensions(1);
cols = 1:info.Dimensions(2);
Im2 = imagesc(rows.*info.PixelDimensions(1),cols.*info.PixelDimensions(2),Im(:,:)');
saveas(gcf,'Output_filename.png')
2 件のコメント
Jurgen vL
2019 年 5 月 21 日
You are fundamentally misunderstanding what imagesc does. You want spatial resizing, not graylevel rescaling. Consider using imresize3.
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