taskGNU Astronomy Utilities - Tasks: task #13870, Function for operations on...

 
 

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task #13870: Function for operations on specific pixels in an image

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Wed 27 Jan 2016 07:11:05 AM UTC  
 
Should Start On: Tue 26 Jan 2016 03:00:00 PM UTCShould be Finished on: Tue 26 Jan 2016 03:00:00 PM UTC
Category: ArithmeticPriority: 5 - Normal
Item Group: EnhancementStatus: Done
Privacy: PublicPercent Complete: 100%
Assigned to: Mohammad Akhlaghi <makhlaghi>Open/Closed: Closed
Effort: 0.00

Fri 26 Aug 2016 05:44:14 PM UTC, comment #3:

Sorry, I forgot to change the status of this task to "closed"!

Mohammad Akhlaghi <makhlaghi>
Project AdministratorIn charge of this item.
Fri 26 Aug 2016 05:43:42 PM UTC, comment #2:

An initial implementation of this task was completed and is now pushed to master. A test was also written for it (to separate the pixels of the detected objects from the background noise, see `tests/where.fits' after running `make check') an explanation has also been added to the book.

Mohammad Akhlaghi <makhlaghi>
Project AdministratorIn charge of this item.
Thu 25 Aug 2016 06:02:39 PM UTC, comment #1:

Eversince commit 249a0e056 functions have been defined in Arithmetic. But it seems I had forgot to tag this task as closed.

But besides pure functions that operate on all pixels, the last example in the comments of task #13574, had a unique function called `where' (taken from Numpy's `numpy.where' function). This unique function will allow setting values for special pixels in the image, not all pixels.

I am now busy implementing this feature, it requires the definition of conditionals which have mostly been done, so I don't expect it to take too long.

Mohammad Akhlaghi <makhlaghi>
Project AdministratorIn charge of this item.
Wed 27 Jan 2016 07:11:05 AM UTC, original submission:

As explained in the comments of task #13574, it would be really useful if functions could be defined while doing pixel based arithmetic. Since that task will be closed once ImageArithmetic is working, the discussions on adding functions (which are independent of the other aspects of ImageArithmetic) will be done in this thread until they are implemented.

Mohammad Akhlaghi <makhlaghi>
Project AdministratorIn charge of this item.

 

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    Follow 6 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 26 Aug 2016 05:44:14 PM UTCmakhlaghiOpen/ClosedOpen=>Closed
    Fri 26 Aug 2016 05:43:42 PM UTCmakhlaghiStatusPostponed=>Done
      Percent Complete60%=>100%
    Thu 25 Aug 2016 06:02:39 PM UTCmakhlaghiPercent Complete0%=>60%
      Assigned toNone=>makhlaghi
      SummaryAllow functions in ImageArithmetic=>Function for operations on specific pixels in an image

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