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How to scale data

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flemingtb
flemingtb 2018-8-24
回答： Image Analyst 2018-8-24
I have point cloud data from a profilometer, where each scan line is a row and each column is a pixel in the line scan. i know what my pitch is between pixels and i know my scan count, frequency and velocity. I can calculate what my (x) and (Y) axis scales should be in terms of millimeters, how do i do this in Matlab?
Right now my data shows up as 1-2400 lines (Y), and 1-300 columns (X).

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Image Analyst
Image Analyst 2018-8-24
Try this
yInMm = y * mmPerPixelX
xInMm = (1:300) * mmPerPixelY
where mmPerPixel is the sampling rate (pitch) that you say you already know for the two directions (which may not be the same in each direction).

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