hi all,

i have at AT91SAM9263-ek kit bought from a local company in b'lore.

I need opencv for this board for my image processing work. Is opencv available for AT91SAM9263-EK. please provide a download link if present.

Thanks in advance

Hi,
we had a look on openCV for image processing on an AT91SAM9260. Since we did not found a port for this target, we started to port the openCV sources by ourself. Meanwhile we found out, that it was overdone to use openCV and stopped porting.
Instead of openCV we now use (simple) hand written image processing functions.
Since openCV is not optimized to be used on an Arm9, you might get problems concerning the performance.

What kind of image processing are you planning to use?

hi stefan,

Thank you very much for the reply.
I need simple image displaying functions and few filters for my image processing work on the board.
If OpenCV is not optimized for AT91SAM9263-EK, is there any other thing.

What are the hand written functions which you use. Can you please share them with me. my main aim is to read, write and display images on the device.

The OS which is on the device is Linux 2.6.20

thank you in advance

Since we are getting paid for the development and the product is commercial, we are not allowed, to share the sources. But I may give you some hints...

I would expect, that the displaying functions are part of the display driver for the LCD you use.

Which image formats do you want to read and write? The main problem would be to convert the image to the format, the display driver expects.
What kind of filtering will be applied?
We use simple FIR filters for smoothing the data (http://en.wikipedia.org/wiki/Finite_impulse_response). This is very easy to implement as a loop running over all pixels.

If you have a list of functions you will need, I may give you some hints of how you might implement them.

hi stefan,

I have an algorithm for zooming of images.I need to implement it on this device and then do some performance analysis.

I work only on JPEG images.I need to read the image, apply my algorithm, and then should be able to display both the input and the output images.As you said the functions might be available in LCD driver of the device. But, how do i use them for my purpose. How do i know what functions are present in the LCD Driver.

Right now i don't have any list of functions which i might be using. But, presently i must be able to atleast read an image and then display an image.

thank you in advance

Hi,
I'm not familiar with JPEG since we use our own "raw" format.
If you have to start from the basics, first have a look to the JPEG format itself and try to convert JPEG images first on a PC, not on the microcontroller.
If you have running code on the PC (e.g. as a gcc-project) you might port this code to the real target hardware.
Also look for free libraries for JPEG image manipulations, as you might not want to write all the functions for yourself. You do not need to reinvent the wheel...