Re: Compare Images to Quantify Cleaning Performance

Posted by gankaku on Sep 30, 2015; 5:03pm
URL: http://imagej.273.s1.nabble.com/Compare-Images-to-Quantify-Cleaning-Performance-tp5014503p5014506.html

Hi Frank,

could you provide an example image for the before and after comparison,
respectively.
Depending on how the differences look like, we might be able to suggest a
possible solution.

In general, without having seen the images, I would suggest that a standard
imaging setup makes sense. Thus, I would try to always keep the exact same
distance and relative position to the plate.
In the worst case construct yourself a scaffold for the plates with a fixed
distance to the camera tripod.

regards,
Jan

2015-09-30 17:18 GMT+02:00 Frank Robson <[hidden email]>:

> Hello,
>
> I'm trying to quantify the cleaning performance of a dishwasher. To do so,
> I
> have standardized "dirt test plates" that I clean using the machine.
> I take pictures of the test plates before and after cleaning them and want
> to measure how much dirt got off during the process.
> I thougth ImageJ could help me out to do so but the only metric I found for
> comparision until now are the RGB-values of both images.
> I was wondering if there was a better way of doing it.
>
> After the wash, the plate becomes brighter and the stains more grainy.
> Pixel to pixel comparision is not possible because the camera is not held
> still.
>
> Thank you for your help,
> Frank
>
>
>
> --
> View this message in context:
> http://imagej.1557.x6.nabble.com/Compare-Images-to-Quantify-Cleaning-Performance-tp5014503.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

--

CEO: Dr. rer. nat. Jan Brocher
phone:  [phone]
mobile: [phone]
e-mail: [hidden email]
info: [hidden email]
inquiries: [hidden email]
web: www.biovoxxel.de

--
ImageJ mailing list: http://imagej.nih.gov/ij/list.html