[Haskell-cafe] [ANN] New OpenCV Bindings

Ivan Perez ivanperezdominguez at gmail.com
Sat Sep 28 14:53:55 CEST 2013

Cool. Thanks a lot for uploading this.

I have a question (and I confess that I haven't checked the link). How is
this related to or overlaps with cv-combinators?


On 28 September 2013 06:18, Arjun Comar <nrujac at gmail.com> wrote:

> After receiving feedback, I went ahead and split out the raw C wrappers
> and Haskell bindings. You can find them at
> www.github.com/arjuncomar/opencv-raw. I'll upload it to hackage as
> opencv-raw once I have uploader privileges.
> Regards,
> Arjun
> On Fri, Sep 27, 2013 at 4:09 PM, Arjun Comar <nrujac at gmail.com> wrote:
>> Hi all,
>> I've been hard at work on a new set of OpenCV bindings that will
>> hopefully solve a lot of the shortcomings with previous attempts. An
>> automatic header parser has been used to generate a full set of Haskell
>> bindings for the C++ API, and I'm now working to create a pleasant Haskell
>> API. The plan is to expose major functionality through pipes for two
>> reasons: 1) OpenCV is not very referentially transparent, and so you're
>> stuck in IO for anything non-trivial. Lazy IO is potentially problematic,
>> and so immediate incorporation of a proper streaming library is probably
>> best. 2) Computer vision algorithms are frequently expressed in terms of
>> pipelines of functionality, and a pipes approach can provide a very natural
>> API for expressing these algorithms.
>> At this stage, I could very much use input from anyone who's interested
>> in these bindings. I've got the basics of a library forming, but there's a
>> ton to do and help in the form of pull requests are very very welcome. I
>> could also use feedback on what's been done so far (especially criticisms)
>> as well as feature requests.
>> The current plan is to develop the pipes API for the core functionality.
>> The plan is to provide the major functionality from core, highgui, imgproc,
>> features2d, contrib, ml, flann, video, and objdetect as quickly as I can
>> before trying to cover any of the more specialized parts of the API. The
>> functions and types from these modules (baring a few major and important
>> exceptions) are automatically translated into C wrappers and raw Haskell
>> bindings.
>> If there's sufficient interest in these raw bindings separately from the
>> API I'm developing, I'll release them as a separate package on Hackage. I'm
>> calling my project revelation for the moment because I'm bad at naming
>> things and it was the best pun I could come up with.
>> Github: www.github.com/arjuncomar/revelation
>> Regards,
>> Arjun
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