# Non-Planar Unroll of Tiff Stack

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## Non-Planar Unroll of Tiff Stack

 The best way to explain what I want to do is to imagine that my object in question is a 100 page stack of printer paper, rolled in to a cylinder.  If I take that rolled up cylinder of paper and then unroll it and lay it flat, and each paper represented an image/slice, how would I get to that point of having an image sequence of each paper representing a slice? -- Sent from: http://imagej.1557.x6.nabble.com/-- ImageJ mailing list: http://imagej.nih.gov/ij/list.html
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## Re: Non-Planar Unroll of Tiff Stack

 Hi anonymous, you could try something like the following: - If necessary, reslice [1] the stack such that the axis runs in z direction. - If necessary, crop to have the axis in the center - Use a plugin to convert from polar to Cartesian coordinates. I fear that the Polar Transformer [2] can do only single slices, not stacks, so you would need a macro to do it slice by slice and combine the slices into a stack. Maybe one could modify it to work with stacks, or there is a similar plugin that works with stacks? - Reslice the stack to get the 'paper sheets' Michael [1] https://imagej.nih.gov/ij/docs/guide/146-28.html#toc-Subsubsection-28.6.9[2] https://imagej.nih.gov/ij/plugins/download/Polar_Transformer.java________________________________________________________________ On 13/12/2017 19:03, Lintfur wrote: > The best way to explain what I want to do is to imagine that my object in > question is a 100 page stack of printer paper, rolled in to a cylinder.  If > I take that rolled up cylinder of paper and then unroll it and lay it flat, > and each paper represented an image/slice, how would I get to that point of > having an image sequence of each paper representing a slice? -- ImageJ mailing list: http://imagej.nih.gov/ij/list.html