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mlib_imagecrosscorrel(3mlib) [sunos man page]

mlib_ImageCrossCorrel(3MLIB)											      mlib_ImageCrossCorrel(3MLIB)

NAME
mlib_ImageCrossCorrel - cross correlation SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageCrossCorrel(mlib_d64 *correl, const mlib_image *img1, const mlib_image *img2); The mlib_ImageCrossCorrel() function computes the cross-correlation between a pair of images. It uses the following equation: 1 w-1 h-1 correl[i] = ----- * SUM SUM (img1[x][y][i] * img2[x][y][i]) w*h x=0 y=0 where w and h are the width and height of the images, respectively. The function takes the following arguments: correl Pointer to cross correlation array on a channel basis. The array must be the size of channels in the images. correl[i] contains the cross-correlation of channel i. img1 Pointer to first image. img2 Pointer to second image. The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ mlib_ImageAutoCorrel(3MLIB), mlib_ImageAutoCorrel_Fp(3MLIB), mlib_ImageCrossCorrel_Fp(3MLIB), mlib_ImageNormCrossCorrel(3MLIB), mlib_ImageNormCrossCorrel_Fp(3MLIB), attributes(5) 20 Apr 2005 mlib_ImageCrossCorrel(3MLIB)

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mlib_SignalCrossCorrel_S16(3MLIB)			    mediaLib Library Functions				 mlib_SignalCrossCorrel_S16(3MLIB)

NAME
mlib_SignalCrossCorrel_S16, mlib_SignalCrossCorrel_S16S, mlib_SignalCrossCorrel_F32, mlib_SignalCrossCorrel_F32S - signal cross correlation SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_SignalCrossCorrel_S16(mlib_d64 *correl, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 n); mlib_status mlib_SignalCrossCorrel_S16S(mlib_d64 *correl, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 n); mlib_status mlib_SignalCrossCorrel_F32(mlib_d64 *correl, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 n); mlib_status mlib_SignalCrossCorrel_F32S(mlib_d64 *correl, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 n); DESCRIPTION
Each of these functions performs cross correlation. For monaural signals, the following equation is used: 1 n-1 correl[0] = --- * SUM (src1[i] * src2[i]) n i=0 For stereo signals, the following equation is used: 1 n-1 correl[0] = --- * SUM (src1[2*i] * src2[2*i]) n i=0 1 n-1 correl[1] = --- * SUM (src1[2*i + 1] * src2[2*i + 1]) n i=0 PARAMETERS
Each of the functions takes the following arguments: correl Pointer to the cross correlation array. In the stereo version, correl[0] contains the cross correlation of channel 0, and correl[1] contains the cross correlation of channel 1. src1 First source signal array. src2 Second source signal array. n Number of samples in the source signal arrays. RETURN VALUES
Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_SignalAutoCorrel_S16(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_SignalCrossCorrel_S16(3MLIB)

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