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HOW TO CONVERT PIXEL VALUES TO MICROMETER

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D Haran
D Haran on 15 May 2012
Commented: Image Analyst on 26 Jan 2021
CAN SOME ONE PROVIDE ME WITH THE FOLLOWING INFORMATION. IAM WORKING ON A FINAL PROJECT.
HOW TO CONVERT PIXEL VALUES TO MICROMETER (FORMULA)
HOW TO MAGNIFY AND CAPTURE A IMAGE TO MEASURE ITS VALUES IN MICROMETERS.
WHAT IS THE DESIGN FACTORS TO BE CONSIDERED (FORMULA) TO OBTAIN THE SAME

Answers (2)

Image Analyst
Image Analyst on 15 May 2012
YOU NEED TO IMAGE AN OBJECT OF A KNOWN LENGTH, SUCH AS A RULER OR PRECISION SPHERES.
  3 Comments
Image Analyst
Image Analyst on 26 Jan 2021
Devesh, I did tell you and did give you the code. Why didn't you run my attached demo and draw a line across your micron bar on the bottom to calibrate, and then draw the vertical distance to get the height of the object?
Or to get automatically, do your spatial calibration and then threshold the image and get the bounding box, and then multiply the bounding box height in pixels by your micronsPerPixel calibration factor. See my Image Segmentation Tutorial in my File Exchange for a full demo:

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Alaa
Alaa on 17 Feb 2015
Actually, I need same code , is anyone can help us?

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