[mmfreedom] [Up] [int32] | Data Type Conversion |
Implemented in Python.
y | Image Unsigned gray-scale (uint8 or uint16), signed (int32) or binary image. |
mmgray converts a binary image into a gray-scale image of a specified data type. The value
k1
is assigned to the 1 pixels of
f
, while the 0 pixels are assigned to the minimum value associated to the specified data type.
>>> b=mmbinary([0, 1, 0, 1])
>>> print b
[0 1 0 1]
>>> c=mmgray(b)
>>> print c
[ 0 255 0 255]
>>> d=mmgray(b,'uint8',100)
>>> print d
[ 0 100 0 100]
>>> e=mmgray(b,'uint16')
>>> print e
[ 0 65535 0 65535]
>>> f=mmgray(b,'int32',0)
>>> print f
[-2147483647 0 -2147483647 0]
def mmgray(f, TYPE="uint8", k1=None): from Numeric import array if k1 is None: k1 = mmmaxleveltype(TYPE) if type(f) is list: f = mmbinary(f) assert mmis(f,'binary'), 'f must be binary' if k1==None: k1=mmmaxleveltype(TYPE) if TYPE == 'uint8' : y = uint8(f*k1) elif TYPE == 'uint16': y = uint16(f*k1) elif TYPE == 'int32' : y = int32(f*k1) - int32(mmneg(f)*mmmaxleveltype(TYPE)) else: assert 0, 'type not supported:'+TYPE return y
mmfreedom | Control automatic data type conversion. |
mmbinary | Convert a gray-scale image into a binary image |
mmthreshad | Threshold (adaptive) |
mmis | Verify if a relationship among images is true or false. |
[mmfreedom] [Up] [int32] | ![]() |
Copyright (c) 2003, Roberto A. Lotufo, UNICAMP-University of Campinas; Rubens C. Machado, CenPRA-Renato Archer Research Center. |