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Reflectance of Car Paints

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ronq

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May 12, 2009, 7:35:21 AM5/12/09
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I'm looking for data on the reflectance of different car paint colors.
Any help would be greatly appreciated.

skyf...@gmail.com

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May 15, 2009, 4:08:21 AM5/15/09
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On May 12, 7:35 pm, ronq <roberts...@yahoo.com> wrote:
> I'm looking for data on the reflectance of different car paint colors.
> Any help would be greatly appreciated.

Paint of car has angle issue: different color in different view angle.
Multi-angle metering is needed IMHO.

Jim Worthey

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May 24, 2009, 5:50:31 AM5/24/09
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ronq wrote:
> I'm looking for data on the reflectance of different car paint colors.
> Any help would be greatly appreciated.

Some car paints have angular dependence, not all. In any case, there is
a famous set of spectral reflectance data that includes Dupont car
paints. The article was

Vrhel, Michael J., Ron Gershon, and Lawrence S. Iwan, �Measurement and
analysis of object reflectance spectra,� Color Res. Appl. 19, 4-9, (1994).

In the past, the data were available by ftp from server ftp.eos.ncsu.edu
in directory /pub/spectra. I am not finding the files on that server
now. If you will contact me directly, I can send the whole set of data.
In the future, I could make them available through my web site.

The email address on my web site may or may not be working.

Jim Worthey
jworthey (at symbol) rcn.com
http://www.jimworthey.com

Alan Murphy

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May 25, 2009, 10:43:51 AM5/25/09
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"Jim Worthey" <jwor...@rcn.com> wrote in message
news:JL8Sl.43338$0S.3...@newsfe22.iad...

> ronq wrote:
>> I'm looking for data on the reflectance of different car paint colors.
>> Any help would be greatly appreciated.
>
> Some car paints have angular dependence, not all. In any case, there is a
> famous set of spectral reflectance data that includes Dupont car paints.
> The article was
>
> Vrhel, Michael J., Ron Gershon, and Lawrence S. Iwan, �Measurement and
> analysis of object reflectance spectra,� Color Res. Appl. 19, 4-9,
> (1994).
>
> In the past, the data were available by ftp from server ftp.eos.ncsu.edu
> in directory /pub/spectra. I am not finding the files on that server
> now. If you will contact me directly, I can send the whole set of data.
> In the future, I could make them available through my web site.
>
> The email address on my web site may or may not be working.
>
> Jim Worthey
> jworthey (at symbol) rcn.com
> http://www.jimworthey.com

Metallic and pearlescent paint finishes can have
extreme angular dependence. Plain paint finishes
do not. But plain paint probably accounts for 20%
car finishes, at the most, so the statement that multi-
angle metering is needed is in general correct.

Alan

Bo Schwarzstein

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Jun 15, 2009, 7:42:06 AM6/15/09
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On May 12, 7:35 pm, ronq <roberts...@yahoo.com> wrote:
> I'm looking for data on the reflectance of different car paint colors.
> Any help would be greatly appreciated.

It seems that you are searching BRDF of car paint,

here is it,

http://www.graphics.cornell.edu/online/measurements/reflectance/carpaints/index.html

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