arithlow.c File Reference

Low-level implementation of grayscale image arithmetic. More...

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

Go to the source code of this file.

Functions
void	addConstantGrayLow (l_uint32 *data, l_int32 w, l_int32 h, l_int32 d, l_int32 wpl, l_int32 val)
void	multConstantGrayLow (l_uint32 *data, l_int32 w, l_int32 h, l_int32 d, l_int32 wpl, l_float32 val)
void	addGrayLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 d, l_int32 wpld, l_uint32 *datas, l_int32 wpls)
void	subtractGrayLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 d, l_int32 wpld, l_uint32 *datas, l_int32 wpls)
void	thresholdToValueLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 d, l_int32 wpld, l_int32 threshval, l_int32 setval)
void	finalAccumulateLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 d, l_int32 wpld, l_uint32 *datas, l_int32 wpls, l_uint32 offset)
void	finalAccumulateThreshLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 wpld, l_uint32 *datas, l_int32 wpls, l_uint32 offset, l_uint32 threshold)
void	accumulateLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 wpld, l_uint32 *datas, l_int32 d, l_int32 wpls, l_int32 op)
void	multConstAccumulateLow (l_uint32 *data, l_int32 w, l_int32 h, l_int32 wpl, l_float32 factor, l_uint32 offset)
void	absDifferenceLow (l_uint32 *datad, l_int32 w, l_int32 h, l_int32 wpld, l_uint32 *datas1, l_uint32 *datas2, l_int32 d, l_int32 wpls)

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Detailed Description

Low-level implementation of grayscale image arithmetic.

    One image grayscale arithmetic (8, 16 or 32 bpp)
          void       addConstantGrayLow()
          void       multConstantGrayLow()

    Two image grayscale arithmetic (8, 16 or 32 bpp)
          void       addGrayLow()
          void       subtractGrayLow()

    Grayscale threshold operation (8, 16 or 32 bpp)
          void       thresholdToValueLow()

    Image accumulator arithmetic operations (8, 16, 32 bpp)
          void       finalAccumulateLow()
          void       finalAccumulateThreshLow()
          void       accumulateLow()
          void       multConstAccumulateLow()

    Absolute value of difference, component-wise.
          void       absDifferenceLow()

Definition in file arithlow.c.

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Function Documentation

void addConstantGrayLow	(	l_uint32 *	data,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpl,
		l_int32	val
	)

addConstantGrayLow()

Definition at line 56 of file arithlow.c.

References GET_DATA_BYTE, GET_DATA_TWO_BYTES, L_MAX, L_MIN, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixAddConstantGray().

void multConstantGrayLow	(	l_uint32 *	data,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpl,
		l_float32	val
	)

multConstantGrayLow()

Definition at line 113 of file arithlow.c.

References GET_DATA_BYTE, GET_DATA_TWO_BYTES, L_MIN, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixMultConstantGray().

void addGrayLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpld,
		l_uint32 *	datas,
		l_int32	wpls
	)

addGrayLow()

Definition at line 161 of file arithlow.c.

References GET_DATA_BYTE, GET_DATA_TWO_BYTES, L_MIN, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixAddGray().

void subtractGrayLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpld,
		l_uint32 *	datas,
		l_int32	wpls
	)

subtractGrayLow()

Definition at line 205 of file arithlow.c.

References GET_DATA_BYTE, GET_DATA_TWO_BYTES, L_MAX, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixSubtractGray().

void thresholdToValueLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpld,
		l_int32	threshval,
		l_int32	setval
	)

thresholdToValueLow()

Definition at line 251 of file arithlow.c.

References FALSE, GET_DATA_BYTE, GET_DATA_TWO_BYTES, SET_DATA_BYTE, SET_DATA_TWO_BYTES, and TRUE.

Referenced by pixThresholdToValue().

void finalAccumulateLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	d,
		l_int32	wpld,
		l_uint32 *	datas,
		l_int32	wpls,
		l_uint32	offset
	)

finalAccumulateLow()

Definition at line 322 of file arithlow.c.

References L_MAX, L_MIN, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixFinalAccumulate().

void finalAccumulateThreshLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	wpld,
		l_uint32 *	datas,
		l_int32	wpls,
		l_uint32	offset,
		l_uint32	threshold
	)

Definition at line 375 of file arithlow.c.

References SET_DATA_BIT.

Referenced by pixFinalAccumulateThreshold().

void accumulateLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	wpld,
		l_uint32 *	datas,
		l_int32	d,
		l_int32	wpls,
		l_int32	op
	)

accumulateLow()

Definition at line 406 of file arithlow.c.

References GET_DATA_BIT, GET_DATA_BYTE, GET_DATA_TWO_BYTES, and L_ARITH_ADD.

Referenced by pixAccumulate().

void multConstAccumulateLow	(	l_uint32 *	data,
		l_int32	w,
		l_int32	h,
		l_int32	wpl,
		l_float32	factor,
		l_uint32	offset
	)

multConstAccumulateLow()

Definition at line 485 of file arithlow.c.

Referenced by pixMultConstAccumulate().

void absDifferenceLow	(	l_uint32 *	datad,
		l_int32	w,
		l_int32	h,
		l_int32	wpld,
		l_uint32 *	datas1,
		l_uint32 *	datas2,
		l_int32	d,
		l_int32	wpls
	)

absDifferenceLow()

Finds the absolute value of the difference of each pixel, for 8 and 16 bpp gray and for 32 bpp rgb. For 32 bpp, the differences are found for each of the RGB components separately, and the LSB component is ignored. The results are written into datad.

Definition at line 522 of file arithlow.c.

References COLOR_BLUE, COLOR_GREEN, COLOR_RED, GET_DATA_BYTE, GET_DATA_TWO_BYTES, L_ABS, L_ERROR, PROCNAME, SET_DATA_BYTE, and SET_DATA_TWO_BYTES.

Referenced by pixAbsDifference().