How can i recognize tempreture of inside of hot-furnace by processing of its image?

We have a hot-furnace that its tempreture is nearly 1200 deg centigerad, i want to take a picture of it and show inside temperature, i am very new in image processing, i dont want which camera and which instrument is require? and how it is possible do this purpose, please help me.

Answer 1

[Image Analyst]

You said you don't want which camera to use, so I assume you already have a thermal camera. You need to know the format of the images the camera produces. I'm talking about the real image with values in degrees Celcius, not some pseudocolored image that is good for nothing but a visual assessment but not image analysis. Did your thermal camera manufacturer supply you with any MATLAB code for reading in the images? That's the first step before you can even attempt any image analysis - you need to have an image to work on!

[mostafa]

sorry sir about my mistake in writing, my means was that i dont know which camera is reqiure? We dont have any instrument for this purpose, i want to know about instrument that is require for it and also purchase it, also i want good document to learn and reach quickly to my purpose. I have so many question, such as, is it possible use ordinary camera similar home camera for take a picture from furnace? Does it need hardware filter or no? Please help me.

[Image Analyst]

You need a thermal camera. These are special long wavelength infrared cameras. An "ordinary" infrared camera (like you might get from removing the IR filter on an ordinary CCD camera) won't do the job because thermal infrared is far from visible. You can contact companies like FLIR to see what options they have that are not ITAR restricted. This means that they will be low res cameras but are available for non-military, industrial use. I have heard of some thermal camera being available for $12,000, and I think maybe recently I've heard of the price of some coming down to $3k. You need to make sure though that the camera can export the image in degrees. A viewing-only camera, or one that outputs only a pseudocolor image is not usable for image analysis.

[mostafa]

Thank you for your attention. I understand from your comment that, if i purchase a CCD camera and IR filter, i can make an thermal spectrum from inside furnace, which type of CCD camera must i purchase? I want to analysis it by Matlab software, please be care that we dont want speedy take image, maybe one image per 5 minute is enough for us. Best regards.

[Image Analyst]

A CCD camera won't work. Silicon CCDs are not sensitive to thermal wavelengths. CCDs stop responding about 1 microns wavelength while the thermal range is around 8 - 12 microns.

Here are some materials that are used in thermal cameras

    indium antimonide (3-5 μm)
    indium arsenide
    mercury cadmium telluride (MCT) (1-2 μm, 3-5 μm, 8-12 μm)
    lead sulfide
    lead selenide
    vanadium(V) oxide (metal insulator phase change material, for microbolometer arrays)
    lanthanum barium manganite (LBMO, metal insulator phase change material)
    amorphous silicon
    lead zirconate titanate (PZT)
    lanthanum doped lead zirconate titanate (PLZT)
    lead scandium tantalate (PST)
    lead lanthanum titanate (PLT)
    lead titanate (PT)
    lead zinc niobate (PZN)
    lead strontium titanate (PSrT)
    barium strontium titanate (BST)
    barium titanate (BT)
    antimony sulfoiodide (SbSI)
    polyvinylidene difluoride (PVDF)

Go here for more info : http://en.wikipedia.org/wiki/Thermographic_camera

You should ask the manufacturers if they have readers (MATLAB code) so that you can bring their images into MATLAB.

[mostafa]

Thanks alot for your attention.

Answer 2

[mostafa]

Hi again Image analyst Does it have any replacement method that is chipper and flexible than use thermovision for this purpose, becuase the good accuracy is not require such as 0.1, uder 50 degree of centigerad is good sensitivity for us. Best regards.

[Image Analyst]

I am not up to date on prices or models of inexpensive thermal cameras that are available now.

[mostafa]

Thanks alot agian, DO you have any information about Geiger–Müller tube? Is it possible detect the 8-12 micro meter of thermal wave length?

[Image Analyst]

Sorry, I don't know what that is. The thermal camera I used was a high resolution ITAR-restricted micro-bolometer from L3.

[mostafa]

Thanks alot for your attention.