RAWK
Gigapixel Raw Image Processing Toolkit
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image_bias.hpp
1 // RAWK Copyright (C) 2014 Robert Kooima
2 //
3 // This program is free software: you can redistribute it and/or modify it
4 // under the terms of the GNU General Public License as published by the Free
5 // Software Foundation, either version 3 of the License, or (at your option)
6 // any later version.
7 //
8 // This program is distributed in the hope that it will be useful, but WITH-
9 // OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 // more details.
12 
13 #ifndef IMAGE_BIAS_HPP
14 #define IMAGE_BIAS_HPP
15 
16 //------------------------------------------------------------------------------
17 
19 
20 class bias : public image
21 {
22 public:
25 
26  bias(double value, image *L) : image(L), value(value) { }
27 
28  virtual double get(int i, int j, int k) const
29  {
30  return L->get(i, j, k) + value;
31  }
32 
33  virtual void tweak(int a, int v)
34  {
35  if (a == 0) value += 0.1 * v;
36  }
37 
38  virtual void doc(std::ostream& out) const
39  {
40  out << "bias " << value;
41  }
42 
43 private:
44  double value;
45 };
46 
47 //------------------------------------------------------------------------------
48 
49 #endif
virtual double get(int i, int j, int k) const =0
Return the value of the sample at row i, column j, channel k.
image * L
Left child.
Definition: image.hpp:117
Bias filter.
Definition: image_bias.hpp:20
virtual void tweak(int a, int v)
Tweak image parameter a, changing the value by a factor of v.
Definition: image_bias.hpp:33
Base class for all image sources, filters, and operators.
Definition: image.hpp:20
virtual void doc(std::ostream &out) const
Produce a string documenting the function of this object.
Definition: image_bias.hpp:38
bias(double value, image *L)
Add value to all samples of image L. This alters the brightness of L.
Definition: image_bias.hpp:26