help on converting bmp to 8bit grayscale arrays

[mepgkas]

Enrique,
Thank you for your help. It is much appreciated being a beginner at labview!

I will explain the reason for this program to help you get a better understanding. The main aim is to find the in-cylinder combustion temperature from a diesel engine. The method using is the two-colour method.

Firstly photographs are taken and the image is split into two beams and filtered through different wavelengths. The picture from the smaller wavelength is related to ta1 and the larger wavelength is ta2.
The photos show the comb chamber as a circle with the injector in the middle.

The intensity values need to first be calibrated. The process for this is by photographs of a tungsten lamp. By changin the current, the temperature of the lam
p is known and the photographs will give off a graylevel intensity. The intensity is then plotted against the temperature and then corresponding temperatures are then inserted as ta1 and ta2.

is it too much to ask how i may include the calibration in the program and also how i can manipulate the picture so I only look at the data from the circle of the combustion chamber?

I hope this has helped you to understand my problem.

Thank you for your time

Kelly

[wiebe@CARYA]

Hi,

Seems like a fun project...

The calibration is not too difficult, if I understand correctlly.

Just let me sleep on it...

Regards,

Wiebe.

"mepgkas" wrote in message
news:50650000000500000076BB0000-1031838699000@exchange.ni.com...
> Enrique,
> Thank you for your help. It is much appreciated being a beginner at
> labview!
>
> I will explain the reason for this program to help you get a better
> understanding. The main aim is to find the in-cylinder combustion
> temperature from a diesel engine. The method using is the two-colour
> method.
>
> Firstly photographs are taken and the image is split into two beams
> and filtered through different wavelengths. The picture from the
> smaller wavelength is related t
o ta1 and the larger wavelength is ta2.
> The photos show the comb chamber as a circle with the injector in the
> middle.
>
> The intensity values need to first be calibrated. The process for this
> is by photographs of a tungsten lamp. By changin the current, the
> temperature of the lamp is known and the photographs will give off a
> graylevel intensity. The intensity is then plotted against the
> temperature and then corresponding temperatures are then inserted as
> ta1 and ta2.
>
> is it too much to ask how i may include the calibration in the program
> and also how i can manipulate the picture so I only look at the data
> from the circle of the combustion chamber?
>
> I hope this has helped you to understand my problem.
>
> Thank you for your time
>
> Kelly