Message Boards Message Boards

0
|
15841 Views
|
9 Replies
|
0 Total Likes
View groups...
Share
Share this post:

Determine intensity for each pixel in an image by digitizing/binning it?

Maurice Stancil
Posted 9 years ago

So I have .bmp file that displays a circular fringe pattern like a target. I guess my question is does anyone know the process that will allow me to determine intensity for each pixel in the image on a scale from 1-9( in terms of lightness and darkness). I'm confused about what I even need to do first. Do I need to digitize the image first, or can I pull that pixel information from the image in its original form? Any help or advice would greatly appreciated. Thank you.The image is the fringe pattern produced by a Michelson Interferometer
POSTED BY: Maurice Stancil
9 Replies
Sort By:
POSTED BY: Sander Huisman
POSTED BY: Sean Clarke
POSTED BY: Maurice Stancil

Try dragging and dropping an image. Does it work?

If you can't drag and drop an image, you can import it into Mathematica with the Import command. See the documentation for Import for more information.

POSTED BY: Sean Clarke
Alexey Popkov
Alexey Popkov
Posted 9 years ago

You can be interested in the following threads dealing with extraction of intensity profiles:

And about obtaining physically reasonable intensity values from usual RGB images:
POSTED BY: Alexey Popkov

Sean it did end up working. Let me ask you one last question. Lets say I have a mathematica simulation that produces fringes, and I want to compare them to real world fringes( the green rings above) produced with the same variables( wavelength, pathlength, etc). Do you think a simple intensity comparison of the pixels would be accurate?
POSTED BY: Maurice Stancil

Sean now that I have the pixels. How can I arrange them so that they are in the same order as the picture. Or in other words lets say I wanted to plot a horizontal strip of intensities across the center of the picture. How do I know which pixels correspond to that horizontal strip?
POSTED BY: Maurice Stancil

You probably want to start a new question. You can't expect people to always be available after a month.

ImageData provides the data in the same shape as the original image. You can see this by running ImageDimensions on the image and Dimensions on the data given by ImageData
POSTED BY: Sean Clarke

Also @Maurice Stancil, bluntly soliciting help is against policy of this forum. You should show your own effort in terms of Wolfram Language code. Mathematica has detailed documentation and there are plenty materials around to learn basic concepts.

POSTED BY: EDITORIAL BOARD
Reply to this discussion
Community posts can be styled and formatted using the Markdown syntax.
Tag limit exceeded
Note: Only the first five people you tag will receive an email notification; the other tagged names will appear as links to their profiles.
Reply Preview
Attachments
Remove
or Discard

Group Abstract Group Abstract