otsutest1.c File Reference

Demonstrates theory behind Otsu splitting by generating plots of histogram and Otsu score function. More...

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "allheaders.h"

Go to the source code of this file.

Functions
static l_int32	GenerateSplitPlot (l_int32 i)
static NUMA *	MakeGaussian (l_int32 mean, l_int32 stdev, l_float32 fract)
	main (int argc, char **argv)
Variables
static const l_int32	NTests = 5
static const l_int32	gaussmean1 [5] = {20, 40, 60, 80, 60}
static const l_int32	gaussstdev1 [5] = {10, 20, 20, 20, 30}
static const l_int32	gaussmean2 [5] = {220, 200, 140, 180, 150}
static const l_int32	gaussstdev2 [5] = {15, 20, 40, 20, 30}
static const l_float32	gaussfract1 [5] = {0.2, 0.3, 0.1, 0.5, 0.3}
static char	buf [256]

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Detailed Description

Demonstrates theory behind Otsu splitting by generating plots of histogram and Otsu score function.

Definition in file otsutest1.c.

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Function Documentation

static l_int32 GenerateSplitPlot

(

l_int32

i

)

[static]

Definition at line 72 of file otsutest1.c.

References buf, gaussfract1, gaussmean1, gaussmean2, gaussstdev1, GPLOT_LINES, GPLOT_PNG, gplotAddPlot(), gplotCreate(), gplotDestroy(), gplotMakeOutput(), L_ARITH_ADD, MakeGaussian(), NULL, numaArithOp(), numaDestroy(), numaGetMax(), numaMakeConstant(), numaReplaceNumber(), and numaSplitDistribution().

Referenced by main().

static NUMA * MakeGaussian	(	l_int32	mean,
		l_int32	stdev,
		l_float32	fract
	)		[static]

Definition at line 132 of file otsutest1.c.

References numaMakeConstant(), numaSetValue(), and total.

Referenced by GenerateSplitPlot().

main	(	int	argc,
		char **	argv
	)

Definition at line 38 of file otsutest1.c.

References buf, GenerateSplitPlot(), IFF_PNG, NTests, pixaCreate(), pixaDestroy(), pixaDisplay(), pixDestroy(), pixDisplay(), pixRead(), pixSaveTiled(), and pixWrite().

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Variable Documentation

const l_int32 NTests = 5 [static]

Definition at line 25 of file otsutest1.c.

Referenced by main().

const l_int32 gaussmean1[5] = {20, 40, 60, 80, 60} [static]

Definition at line 26 of file otsutest1.c.

Referenced by GenerateSplitPlot().

const l_int32 gaussstdev1[5] = {10, 20, 20, 20, 30} [static]

Definition at line 27 of file otsutest1.c.

Referenced by GenerateSplitPlot().

const l_int32 gaussmean2[5] = {220, 200, 140, 180, 150} [static]

Definition at line 28 of file otsutest1.c.

Referenced by GenerateSplitPlot().

const l_int32 gaussstdev2[5] = {15, 20, 40, 20, 30} [static]

Definition at line 29 of file otsutest1.c.

const l_float32 gaussfract1[5] = {0.2, 0.3, 0.1, 0.5, 0.3} [static]

Definition at line 30 of file otsutest1.c.

Referenced by GenerateSplitPlot().

char buf[256] [static]

Definition at line 31 of file otsutest1.c.

Referenced by BoxaSortTest(), cleanProtoSignature(), convertFilesTo1bpp(), DoPageSegmentation(), findFileFormatBuffer(), fpixaDisplayQuadtree(), generateColormapStringsPdf(), generateContentStringPdf(), generateFixedStringsPdf(), generatePagesObjStringPdf(), generatePageStringPdf(), generatePreXStringsPdf(), GenerateSplitPlot(), genTempFilename(), get_header_data(), gplotAddPlot(), gplotCreate(), gplotGenCommandFile(), gplotMakeOutput(), gplotRead(), jbDataWrite(), l_getFormattedDate(), main(), makeTrailerStringPdf(), PixaSortTest(), pixcmapConvertToHex(), pixSplitDistributionFgBg(), substituteObjectNumbers(), test_gif(), and TestImage().