Re: draw contour for given pixel value
Posted by
Walter O'Dell PhD on
URL: http://imagej.273.s1.nabble.com/draw-contour-for-given-pixel-value-tp5003651p5003652.html
there is a contour plotting plugin that I wrote quite a few years ago that permits the user to preselect a series of gray-scale intensities on which to draw a contour.
This is close to what you want I believe.
http://rsbweb.nih.gov/ij/plugins/contour-plotter.htmlIt appears to me that you took a gray-scale picture and applied a colormap such as fire, in which case your raw data is gray-scale to begin with. I suppose that you if wanted a contour at a particular pixel you could hover the mouse over particular pixel in the image, read the pixel value from the main IJ window and then enter that value into the interface in the contour plotter plugin.
On Jun 26, 2013, at 11:44 AM, Neil Fazel <
[hidden email]> wrote:
> For an image with almost elliptic intensity contours, is there a way to draw a selection for a contour corresponding to a given pixel value? For example, I would click on a pixel and it would start from there and trace an almost elliptical contour having that pixel's value. Since the selection would be almost elliptic but not completely, the elliptical selection tool, or oval profiling macro, can't be used.
>
> I have attached an example of such an image.
>
> Thanks,
> Neil
>
>
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http://imagej.nih.gov/ij/list.html> <recovered reference intensity - 5671.png>
Walter O'Dell, PhD
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Dept. Radiation Oncology
McKnight Brain Inst. Rm LG-177
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UF Health Cancer Center
University of Florida
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