Image analysis with PS CS3 EE

T
Posted By
TLL
Jul 1, 2008
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1309
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0
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Closed
First off, I need to apologize if I am not very clear on this issue – I’m fairly math challenged and know enough about Excel to fill out a time sheet and make an invoice. If this kind of thing is up your alley, you are just what we’re looking for.

We are attempting to use the image analysis tools in CS3 EE and Microsoft Excel to determine a number of things in order for a set of photo images to meet a given set of “requirements”. Most of this has to do with examining histograms and determining things like average pixel levels for each of RGB channels, % of pixels in a given range, and percentage of the image that is ’clipped’. This analysis would be done on a random sample of files in order to show the client that the images meet their standards.

Some starting questions:

From what I see of the CS3 analysis tool, it seems to zero in on the gray channel information (perhaps this was developed for the medical diagnostic community) and I’m wondering if you can export the same information (Gray Value –Minimum-Maximum-Mean) for the R, G and B channels.

Does anyone already have the Excel formulas for extracting this information for the ‘Histogram.csv’ that is generated by the analysis features?

This ones a bit murky – is there any method to calculate the numeric value of Contrast (the difference between the histogram reading at .01 and 99% and have that as exportable data?

This one is more like a feature request (or is there another plug-in or other software to do this):

Is it possible to view all three channels (RGB) with the same detailed histogram information as the ‘main’ view, without having to toggle between the various bands?

Anyway, I know this long and I appreciate your time. I will follow this post closely and if you think you can help I’d be happy to go off forum with this.

Thanks! TLL

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