Image viewer plugins - multiple parameters from different functions

[Juan Nunez-Iglesias]

Hi Marcel,




I'm guessing you only need to see the final output of the pipeline? Why not define your own function?




def piped(image, parameter1, parameter, another_parameter):

    a, b = previous_function(image, parameter1, parameter)

    new_image = next_function(image, a, b, another_parameter)

    return new_image




Then use that in your plugin?





Juan.

On Thu, Jan 29, 2015 at 7:58 PM, Marcel Gutsche <marcel.gutsche at gmail.com>
wrote:

> Hi folks, 
> kind of a follow up question of my last one (see here 
> <https://groups.google.com/forum/#%21topic/scikit-image/WXrwvxFd8xA>). 
> <https://groups.google.com/forum/#%21topic/scikit-image/WXrwvxFd8xA> I 
> still have a chain of image processing tasks, which I want to visualize 
> with the image viewer. Certain parameters should be changed on the fly, 
> where i can see the results in the image viwer immediately by the use of 
> plugins. Something like this basically:
> a, b  = previous_function(image, parameter1 = 0.002
>                                     parameter = 0.02)
> new_image = next_function(image, a, b, another_parameter = 3)
> I managed to pass the values a and b, generated by a previous function 
> using Juan's hint with functools.
> next_function
> which was fine as long as I don't want to change parameter1 and parameter2 
> interactively. What do I do now, when I want to change them?  
> Using functools here won't get me far, since now I want to be able to 
> change parameter1 and parameter2 with a slider, as well as 
> another_parameter. 
> Maybe there is still a way to achive this, I saw something like a callback 
> argument for the widgets, but I am not sure how to use them or whether they 
> are related to my problem at all. I would also be fine with writing my own 
> Plugin class, but could not get my head around the given examples. I feel 
> that something like this is quite common, so I hope there are already ways 
> to achieve this. 
> Thanks a lot for the great work,
> Marcel
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