Very simple additive noise module about galsim HOT 4 CLOSED

I have pushed a branch #26_ccdnoise to the repo which contains a CcdNoise.h file and class of the same name that implements the standard CCD noise model. I believe it works and have tested it to some extent using examples/AddNoise.cpp, but because I don't have any python knowledge yet, the AddNoise.py demonstration program that will actually save the noisy images is not yet functional. Have a look and see if the CcdNoise class has the interface that you would like, and maybe someone can get it talking with python.

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Yes, I'll take this on Gary. Yesterday I wrapped all the RandomDeviates, so think I have the tools to hand...

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Am going to pull my initial wrappers of the Random Deviates to the master branch, and then get going on the Python wrappers for the CcdNoise class....

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Hi Gary,

I've made a start on the wrapper for the CcdNoise but have hit a snag with getting my boost wrappers to work. This is piece of learning I need to do, and I don't want this to hold back the milestone.

However, within galsim/noise.py there are now simple functions (with docs) for adding either Poisson noise or Gaussian noise to Images in Python, and so these could be used to get the same behaviour, and would be enough for the milestone. But I am committed to getting this wrapper working soon as I believe it gives a nice one-stop-shop for adding noise to images, and I'm also sure that filling the Image with random deviates will be faster if done in C++ than if done in Python. I'll make a new CcdNoise specific issue for that task, and rename the branch accordingly. This issue, the milestone specific one, I will close (can reopen if necessary!)

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