Dear All,<div><br></div><div>In tools > Image arithm there are a number of operations that can be performed on a single image. However, there doesn't seem to be an option to subtract a value from the image data - only addition is present.</div>
<div><br></div><div>I want to subtract 1 from each pixel in my image. </div><div><br></div><div>In the Sum A(x) + v option I try to set the value as -1 but it doesn't allow me to set a negative value? Is there an option to do it in vv? </div>
<div><br></div><div>Furthermore, I would like to know if vv allows for thresholding of image data. E.g. I would like to set all values above a certain value to zero e.g. Say I want to set all values of pixels above 1 standard deviation to zero but at the same keep the pixel values for those below this threshold, is there a way this can be done within vv?</div>
<div><br></div><div>If not, is there any software that can do this easily for .mhd metaimage/DICOM files without needing to convert them into MATLAB and convert them back?</div><div><br></div><div>Best wishes,</div><div> </div>
<div>Bilal Tahir,<div>James Morrison Researcher in Radiotherapy Imaging</div>
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