Engauge Digitizer 2
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ColorFilterHistogram.h
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1/******************************************************************************************************
2 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5 ******************************************************************************************************/
6
7#ifndef COLOR_FILTER_HISTOGRAM_H
8#define COLOR_FILTER_HISTOGRAM_H
9
10#include <QRgb>
11
12class ColorFilter;
13class QColor;
14class QImage;
15
18{
19public:
22
24 int binFromPixel (const ColorFilter &filter,
25 ColorFilterMode colorFilterMode,
26 const QColor &pixel,
27 const QRgb &rgbBackground) const;
28
32 void generate (const ColorFilter &filter,
33 double histogramBins [],
34 ColorFilterMode colorFilterMode,
35 const QImage &image,
36 int &maxBinCount) const;
37
39 static int HISTOGRAM_BINS () { return 100; }
40
42 int valueFromBin (const ColorFilter &filter,
43 ColorFilterMode colorFilterMode,
44 int bin);
45
46private:
47
48 static int FIRST_NON_EMPTY_BIN_AT_START () { return 1; }
49 static int LAST_NON_EMPTY_BIN_AT_END () { return ColorFilterHistogram::HISTOGRAM_BINS () - 2; }
50};
51
52#endif // COLOR_FILTER_HISTOGRAM_H
ColorFilterMode
void generate(const ColorFilter &filter, double histogramBins[], ColorFilterMode colorFilterMode, const QImage &image, int &maxBinCount) const
Generate the histogram.
ColorFilterHistogram()
Single constructor.
int valueFromBin(const ColorFilter &filter, ColorFilterMode colorFilterMode, int bin)
Inverse of binFromPixel.
static int HISTOGRAM_BINS()
Number of histogram bins.
int binFromPixel(const ColorFilter &filter, ColorFilterMode colorFilterMode, const QColor &pixel, const QRgb &rgbBackground) const
Compute histogram bin number from pixel according to filter.
Class for filtering image to remove unimportant information.
Definition ColorFilter.h:21