Re : Re: CCD sensor read by part, displayed on a single intensity graph

[MatGen]

Hello,

I have here a N_2 cooled 1024x512px CCD camera of which I read only a given number of small non-overlapping areas.

For each area I know the coordinate of the corner/border pixels.

How can I display all results on a single intensity grap, reflecting the position of each area on the CCD chip?

For instance, if I have 8 areas read, I would like to get 8 intensity fields on a 1024x512px intensity graph with black background.

For the time being, I do not need to adjust the scale for each field, but  indication about that would also be greatly appreciated!

Other issue: areas are likely to be binned in x or y direction, which can be an issue when displaying it.

Thank you for your help!

Mat'

[muks]

I have just finished a project on reading data from a ccd sensor.Ok time now to share it.How are you reading the data? U must be using a ccd signal processor.What is the output of it?(12 bit? 16 bit?). You have mentioned 8 areas.You can read the output build a seperate array for each area.Is my understanding right?

[MatGen]

Hello, thank you for the reply muks!

To read the data I use some ActiveX component provided by the manufacturer. It is somehow buggy from their side, but we are working on it.

Output should be 16bits.

I do actually get a separate intensity 2D array for each area, and another array for corner pixel coordinates.

Unfortunately I have no idea how to merge the intensity array into one single intensity array, based on the provided area coordinates.

I hope the bugs won't prevent me too long to actually test the programm on the hardware.

Please let me know whether you need more information.

Best regards,

Mat

[muks]

R u using any usb controller?

[muks]

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Unfortunately I have no idea how to merge the intensity array into one single intensity array, based on the provided area coordinates

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What do you expect the dimension of your intensity array to be?

[MatGen]

The connection is actually through LAN, but get the result is not the issue... [more information in the next message]

[MatGen]

Hello,

Thank you for reading my post.

The overall intensity array has to match the dimension of the CCD sensro, which is 1024x512px.

Then each area may have different size values. I may have only one area, maybe 10... it depends on the sample under investigation.

The only things I may say are:

- areas will not overlap,

- areas coordinates are definitively contained within the sensor surface,

- one can do binning in the X or Y direction, thus that the array returned for a nbX*nbY area has a dimension nbX/Xbin*nbY/Ybin

...

The core of my problem, is really not about reading the sensor, but about building a larger dimension intensity array out of multiple smaller intensity array, of which I know the dimension.

Best regards,

Mathieu

[muks]

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The core of my problem, is really not about reading the sensor, but about building a larger dimension intensity array out of multiple smaller intensity array, of which I know the dimension.

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Sorry but am still not clear with your question.You have 8 intensity array (U still not have mentioned the dimension) and u want to build a larger dimension array.You can use a build array and use concatanate inputs option.

[muks]

Showing how the smaller intensity array and showing us what u expect pictorically will def help.

[MatGen]

As I said, each area may differ from the other ones...

Ok, let me draw a picture in the next message