Re: Image color ratio
- To: mathgroup at smc.vnet.net
- Subject: [mg131844] Re: Image color ratio
- From: Matthias Odisio <matthias at wolfram.com>
- Date: Wed, 16 Oct 2013 05:00:56 -0400 (EDT)
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Hussain, On 10/13/13 12:28 AM, Hussain AlQahtani wrote: > Thanks Matthias > > Your reply is very helpfull. Another question: if i have two images, one is > light grey and the other one is darker. The darker the more concentration > of nano particles. How to quantitively measure the ratio between the two > images in terms of brightness. > > Thanks for your help. > > On Friday, October 11, 2013, Matthias Odisio wrote: > >> Good morning, >> >> On 10/10/13 3:51 PM, KFUPM wrote: >>> Dear All >>> >>> I have a grey image with darker dots and spots. I want to measure the >> ratio of the darker spots to the remaining light gray area. >>> >>> >>> I appreciate your help in anticipation. >>> >>> >>> Best, >>> >>> -HMQ >>> >> >> That sounds straightforward. >> >> You could use ImageLevels and identify the bins corresponding to the >> darker spots and to the lighter areas. >> >> Alternatively, you could threshold your image (using Binarize) to >> create a mask of the dark spots, and then call ImageLevels to compute >> the fraction or ratio you are looking for. >> >> Matthias >> You seem to be looking for the ratio of the average intensity in the two images. This is easily achieved using ImageMeasurement. Check this out: ImageMeasurements[image, "MeanIntensity"] Matthias
- References:
- Image color ratio
- From: KFUPM <hussain.alqahtani@gmail.com>
- Re: Image color ratio
- From: Hussain AlQahtani <hussain.alqahtani@gmail.com>
- Image color ratio