bitmap examples

newer
Re: [Haskell-cafe] Hackage on Linux

Raluca-Elena Podiuc

24 Aug 2010 24 Aug '10

11:02 a.m.

Hi, I am trying to build a mini framework for image processing but I can find any examples about that (bitmap processing ). Does anybody know were can I find some tutorials or samples about that ? Regards, Raluca-Elena

Attachments:

attachment.html (text/html — 273 bytes)

Show replies by date

Anthony Cowley

24 Aug 24 Aug

2:29 p.m.

On Tue, Aug 24, 2010 at 11:02 AM, Raluca-Elena Podiuc wrote:

...

Hi, I am trying to build a mini framework for image processing but I can find any examples about that (bitmap processing ). Does anybody know were can I find some tutorials or samples about that ?

Noam Lewis's HOpenCV package on hackage http://hackage.haskell.org/package/HOpenCV is a great way to get started using OpenCV for image processing. My own fork of this project http://github.com/acowley/HOpenCV adds static checking of color and pixel depth, more OpenCV functionality, and interoperation with Data.Vector.Storable. However, it should definitely be classified as experimental as I'm still exploring how I want things to work. I am using it for real-time video processing in an active research project, though, so it is getting regularly exercised. An example program included in the repository is,

...

import AI.CV.OpenCV.HighCV

...

main = toFile "closed.png" . erode 8 . dilate 8 =<< fromFileGray "input.png"

I've made some effort to provide reasonable haddock documentation, so I recommend building that (cabal haddock) and consulting it to find your way around. As I mentioned, it is all still very rough, but feel free to give it a try if it seems to do what you need. If you're looking to start your own effort from scratch, I think Data.Vector.Storable is nice way to mix Haskell and C. Anthony

C K Kashyap

25 Aug 25 Aug

1:37 a.m.

I am looking for an example of dealing with a 2dim mem region with O1 access time in pure haskell (pure as in whatever comes with haskell platform). On Tue, Aug 24, 2010 at 11:59 PM, Anthony Cowley wrote:

...

On Tue, Aug 24, 2010 at 11:02 AM, Raluca-Elena Podiuc wrote:

...
Hi, I am trying to build a mini framework for image processing but I can find any examples about that (bitmap processing ). Does anybody know were can I find some tutorials or samples about that ?

Noam Lewis's HOpenCV package on hackage http://hackage.haskell.org/package/HOpenCV is a great way to get started using OpenCV for image processing.

My own fork of this project http://github.com/acowley/HOpenCV adds static checking of color and pixel depth, more OpenCV functionality, and interoperation with Data.Vector.Storable. However, it should definitely be classified as experimental as I'm still exploring how I want things to work. I am using it for real-time video processing in an active research project, though, so it is getting regularly exercised. An example program included in the repository is,

...
import AI.CV.OpenCV.HighCV

...
main = toFile "closed.png" . erode 8 . dilate 8 =<< fromFileGray "input.png"

I've made some effort to provide reasonable haddock documentation, so I recommend building that (cabal haddock) and consulting it to find your way around.

As I mentioned, it is all still very rough, but feel free to give it a try if it seems to do what you need. If you're looking to start your own effort from scratch, I think Data.Vector.Storable is nice way to mix Haskell and C.

Anthony _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Regards, Kashyap

Eugene Kirpichov

1:43 a.m.

You just need to use STUArray . 2010/8/25 C K Kashyap :

...

I am looking for an example of dealing with a 2dim mem region with O1 access time in pure haskell (pure as in whatever comes with haskell platform).

On Tue, Aug 24, 2010 at 11:59 PM, Anthony Cowley wrote:

...
On Tue, Aug 24, 2010 at 11:02 AM, Raluca-Elena Podiuc wrote:

...
Hi, I am trying to build a mini framework for image processing but I can find any examples about that (bitmap processing ). Does anybody know were can I find some tutorials or samples about that ?

Noam Lewis's HOpenCV package on hackage http://hackage.haskell.org/package/HOpenCV is a great way to get started using OpenCV for image processing.

My own fork of this project http://github.com/acowley/HOpenCV adds static checking of color and pixel depth, more OpenCV functionality, and interoperation with Data.Vector.Storable. However, it should definitely be classified as experimental as I'm still exploring how I want things to work. I am using it for real-time video processing in an active research project, though, so it is getting regularly exercised. An example program included in the repository is,

...
import AI.CV.OpenCV.HighCV

...
main = toFile "closed.png" . erode 8 . dilate 8 =<< fromFileGray "input.png"

I've made some effort to provide reasonable haddock documentation, so I recommend building that (cabal haddock) and consulting it to find your way around.

As I mentioned, it is all still very rough, but feel free to give it a try if it seems to do what you need. If you're looking to start your own effort from scratch, I think Data.Vector.Storable is nice way to mix Haskell and C.

Anthony _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Regards, Kashyap _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

-- Eugene Kirpichov Senior Software Engineer, Grid Dynamics http://www.griddynamics.com/

5383

Age (days ago)

5384

Last active (days ago)

List overview

Download

3 comments

4 participants

participants (4)