def load(self, path, rgbfilter=None):
"""
Loads the image in 'path' into the Mamba image.
The optional 'rgbfilter' argument can be used to specify how to convert
a color image into a greyscale image. It is a sequence of 3 float values
indicating the amount of red, green and blue to take from the image to
obtain the grey value.
By default, the color conversion uses the ITU-R 601-2 luma transform (see
PIL/PILLOW documentation for details).
"""
next_mbIm = utils.load(path, size=(self.mbIm.width,self.mbIm.height), rgb2l=rgbfilter)
err = core.MB_Convert(next_mbIm, self.mbIm)
raiseExceptionOnError(err)
self.setName(os.path.split(path)[1])
def __init__(self, *args, **kwargs):
"""
Constructor for a Mamba image object.
This constructor allows a wide range of possibilities for defining an image:
* imageMb(): without arguments will create an empty greyscale image.
* imageMb(im): will create an image using the same size and depth
as 'im'.
* imageMb(depth): will create an image with the desired 'depth' (1, 8 or 32).
* imageMb(path): will load the image located in 'path'.
* imageMb(im, depth): will create an image using the same size as 'im'
and the specified 'depth'.
* imageMb(path, depth): will load the image located in 'path' and
convert it to the specified 'depth'.
* imageMb(width, height): will create an image with size 'width'x'height'.
* imageMb(width, height, depth): will create an image with size
'width'x'height' and the specified 'depth'.
When not specified, the width and height of the image will be set to
256x256. The default depth is 8 (greyscale).
When loading an image from a file, please note that Mamba accepts all
kinds of images (actually all the PIL or PILLOW supported formats). You can specify
the RGB filter that will be used to convert a color image into a greyscale
image by adding the rgbfilter=<your_filter> to the argument of the
constructor.
"""
global _image_index
# List of all the parameters that must be retrieved from the arguments
rgbfilter = None
# First we look into the dictionnary to see if they were specified
# specifically by the user
if "rgbfilter" in kwargs:
rgbfilter = kwargs["rgbfilter"]
# Properties
self.displayId = ''
self.gd = None
# We analyze the arguments given to the constructor
if len(args)==0:
# First case : no argument was given
# -> imageMb()
self.mbIm = utils.create(256, 256, 8)
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
elif len(args)==1:
# Second case : the user gives only one argument
if isinstance(args[0], imageMb):
# -> imageMb(im)
self.mbIm = utils.create(args[0].mbIm.width, args[0].mbIm.height, args[0].mbIm.depth)
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
elif isinstance(args[0], str):
# -> imageMb(path)
self.mbIm = utils.load(args[0], rgb2l=rgbfilter)
self.name = os.path.split(args[0])[1]
else:
# -> imageMb(depth)
self.mbIm = utils.create(256, 256, args[0])
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
elif len(args)==2:
# Third case : two arguments
if isinstance(args[0], imageMb):
# -> imageMb(im, depth)
self.mbIm = utils.create(args[0].mbIm.width, args[0].mbIm.height, args[1])
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
elif isinstance(args[0], str):
# -> imageMb(path, depth)
self.mbIm = utils.load(args[0], rgb2l=rgbfilter)
if self.mbIm.depth != args[1]:
self.convert(args[1])
self.name = os.path.split(args[0])[1]
else:
# -> imageMb(width, height)
self.mbIm = utils.create(args[0], args[1], 8)
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
else:
# Last case: at least 3 arguments are given
# -> imageMb(width, height, depth)
self.mbIm = utils.create(args[0], args[1], args[2])
self.name = "Image "+str(_image_index)
_image_index = _image_index + 1
if getShowImages():
self.show()