Mercurial > ift6266

comparison transformations/affine_transform.py @ 154:ce56e8ca960d

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Checked all modules to work with only numpy.random and random and to be deterministic after numpy.random.seed() and random.seed()
author boulanni <nicolas_boulanger@hotmail.com>
date Wed, 24 Feb 2010 16:59:04 -0500
parents b852dddf43a6
children
comparison
equal deleted inserted replaced
153:041d68b34b70 154:ce56e8ca960d
14 14
15 15
16 class AffineTransformation(): 16 class AffineTransformation():
17 def __init__( self, complexity = .5): 17 def __init__( self, complexity = .5):
18 self.shape = (32,32) 18 self.shape = (32,32)
19 self.rng = numpy.random.RandomState()
20 self.complexity = complexity 19 self.complexity = complexity
21 params = self.rng.uniform(size=6) -.5 20 params = numpy.random.uniform(size=6) -.5
22 self.a = 1. + params[0]*.6*complexity 21 self.a = 1. + params[0]*.6*complexity
23 self.b = 0. + params[1]*.6*complexity 22 self.b = 0. + params[1]*.6*complexity
24 self.c = params[2]*8.*complexity 23 self.c = params[2]*8.*complexity
25 self.d = 0. + params[3]*.6*complexity 24 self.d = 0. + params[3]*.6*complexity
26 self.e = 1. + params[4]*.6*complexity 25 self.e = 1. + params[4]*.6*complexity
41 # y' = params[3]*x + params[4]*y _ params[5] 40 # y' = params[3]*x + params[4]*y _ params[5]
42 41
43 # the ranges are set manually as to look acceptable 42 # the ranges are set manually as to look acceptable
44 43
45 self.complexity = complexity 44 self.complexity = complexity
46 params = self.rng.uniform(size=6) -.5 45 params = numpy.random.uniform(size=6) -.5
47 self.a = 1. + params[0]*.8*complexity 46 self.a = 1. + params[0]*.8*complexity
48 self.b = 0. + params[1]*.8*complexity 47 self.b = 0. + params[1]*.8*complexity
49 self.c = params[2]*9.*complexity 48 self.c = params[2]*9.*complexity
50 self.d = 0. + params[3]*.8*complexity 49 self.d = 0. + params[3]*.8*complexity
51 self.e = 1. + params[4]*.8*complexity 50 self.e = 1. + params[4]*.8*complexity