Which camera is colour?

[lionfish0]

We need to add to the generated 'np' image files, metadata about if it's colour or greyscale.

The way to do this is to add to the photo_object in the worker method.

We have a self.colour_camera instance variable, we could use:

E.g.
photo_object = {'index':self.index.value,'record':rec,'camera_timestamp':timestamp,'camera_colour':self.colour_camera.value}

Maybe Euan/Joe you could add this & test it works ok?

[lionfish0]

Just a note...(please disregard)
Worst case, if we forget to store this we could check if it's colour using this function

import pickle
def guesscamtypegetscore(fn):
    """Returns <0.02 if greyscale"""
    photo = pickle.load(open(fn,'rb'))
    img = photo['img']
    if img is None: return np.NaN
    #e.g. 0.0001 = greyscale, 0.7 = colour
    score = np.abs(np.mean(img[0:-2:2,0:-2:2]/2+img[2::2,2::2]/2-img[1:-2:2,1:-2:2])/np.mean(img))
    return score