lbp.h

获得灰度图像LBP算子的C++程序

/*********************************************************************
 * Copyright (C) 2002 Maenpaa
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *   notices, this list of conditions and the following disclaimer.
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 * 2.Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
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 *   with the distribution.
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 *   promote products derived from this software without specific
 *   prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
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#ifndef _LBP_H
#define _LBP_H

#include <values.h>
#include <math.h>

/* Compare a value pointed to by 'ptr' to the 'center' value and
 * increment pointer. Comparison is made by masking the most
 * significant bit of an integer (the sign) and shifting it to an
 * appropriate position. */
#define compab_mask_inc(ptr,shift) { value |= ((unsigned int)(*center - *ptr - 1) & 0x80000000) >> (31-shift); ptr++; }
/* Compare a value 'val' to the 'center' value. */
#define compab_mask(val,shift) { value |= ((unsigned int)(*center - (val) - 1) & 0x80000000) >> (31-shift); }
/* Predicate 1 for the 3x3 neighborhood */
#define predicate 1
/* The number of bits */
#define bits 8

typedef struct
{
	int x,y;
} integerpoint;

typedef struct
{
	double x,y;
} doublepoint;

void calculate_points(void);
inline double interpolate_at_ptr(int* upperLeft, int i, int columns);
int* lbp_histogram(int* img, int rows, int columns, int* result, int interpolated);

#endif