matlab .cc,新手求助，关于mex-O resize.cc这一命令

小弟完全是个新手，在这里谢谢大家了，希望大家能帮我一下。我run一个叫 compile.m的文件，内容如下：

mex -O resize.cc

mex -O dt.cc

mex -O features.cc

mex -O getdetections.cc

mex -O fconv.cc -o fconv

出现以下error：

Error resize.cc: 36 undeclared identifier `alphainfo'

Warning resize.cc: 36 Statement has no effect

Error resize.cc: 36 syntax error; found `ofs' expecting `;'

Error resize.cc: 36 undeclared identifier `ofs'

Error resize.cc: 36 type error: pointer expected

Warning resize.cc: 36 Statement has no effect

Error resize.cc: 37 illegal statement termination

Error resize.cc: 37 skipping `int'

Error resize.cc: 37 undeclared identifier `k'

Error resize.cc: 38 syntax error; found `int' expecting `;'

Error resize.cc: 38 syntax error; found `int' expecting `)'

Error resize.cc: 38 skipping `int'

Error resize.cc: 38 undeclared identifier `dy'

Warning resize.cc: 38 Statement has no effect

Warning resize.cc: 38 unreachable code

Error resize.cc: 38 syntax error; found `)' expecting `;'

Error resize.cc: 38 illegal statement termination

Error resize.cc: 38 skipping `)'

Error resize.cc: 47 type error: pointer expected

Error resize.cc: 47 left operand of . has incompatible type `int'

Error resize.cc: 48 type error: pointer expected

Error resize.cc: 48 left operand of . has incompatible type `int'

Error resize.cc: 49 type error: pointer expected

Error resize.cc: 49 too many errors

D:\MATLAB\R2010A\BIN\MEX.PL: Error: Compile of 'resize.cc' failed.

??? Error using ==> mex at 222

Unable to complete successfully.

Error in ==> compile at 1

mex -O resize.cc

但是这个resize.cc文件应该是没有错误的，我感觉是我的matlab缺少了一些setup以至于无法识别 resize.cc 文件里的内容。安装后我只运行过mbuild -setup。

请知道的大大帮帮小弟吧，真的很着急！

resize.cc的内容如下：

#include

#include "mex.h"

* Fast image subsampling.

* This is used to construct the feature pyramid.

// struct used for caching interpolation values

struct alphainfo {

int si, di;

double alpha;

};

// copy src into dst using pre-computed interpolation values

void alphacopy(double *src, double *dst, struct alphainfo *ofs, int n) {

struct alphainfo *end = ofs + n;

while (ofs != end) {

dst[ofs->di] += ofs->alpha * src[ofs->si];

ofs++;

}

// resize along each column

// result is transposed, so we can apply it twice for a complete resize

void resize1dtran(double *src, int sheight, double *dst, int dheight,

int width, int chan) {

double scale = (double)dheight/(double)sheight;

double invscale = (double)sheight/(double)dheight;

// we cache the interpolation values since they can be

// shared among different columns

int len = (int)ceil(dheight*invscale) + 2*dheight;

alphainfo ofs[len];

int k = 0;

for (int dy = 0; dy < dheight; dy++) {

double fsy1 = dy * invscale;

double fsy2 = fsy1 + invscale;

int sy1 = (int)ceil(fsy1);

int sy2 = (int)floor(fsy2);

if (sy1 - fsy1 > 1e-3) {

assert(k < len);

assert(sy-1 >= 0);

ofs[k].di = dy*width;

ofs[k].si = sy1-1;

ofs[k++].alpha = (sy1 - fsy1) * scale;

}

for (int sy = sy1; sy < sy2; sy++) {

assert(k < len);

assert(sy < sheight);

ofs[k].di = dy*width;

ofs[k].si = sy;

ofs[k++].alpha = scale;

}

if (fsy2 - sy2 > 1e-3) {

assert(k < len);

assert(sy2 < sheight);

ofs[k].di = dy*width;

ofs[k].si = sy2;

ofs[k++].alpha = (fsy2 - sy2) * scale;

}

// resize each column of each color channel

bzero(dst, chan*width*dheight*sizeof(double));

for (int c = 0; c < chan; c++) {

for (int x = 0; x < width; x++) {

double *s = src + c*width*sheight + x*sheight;

double *d = dst + c*width*dheight + x;

alphacopy(s, d, ofs, k);

}

// main function

// takes a double color image and a scaling factor

// returns resized image

mxArray *resize(const mxArray *mxsrc, const mxArray *mxscale) {

double *src = (double *)mxGetPr(mxsrc);

const int *sdims = mxGetDimensions(mxsrc);

if (mxGetNumberOfDimensions(mxsrc) != 3 ||

mxGetClassID(mxsrc) != mxDOUBLE_CLASS)

mexErrMsgTxt("Invalid input");

double scale = mxGetScalar(mxscale);

if (scale > 1)

mexErrMsgTxt("Invalid scaling factor");

int ddims[3];

ddims[0] = (int)round(sdims[0]*scale);

ddims[1] = (int)round(sdims[1]*scale);

ddims[2] = sdims[2];

mxArray *mxdst = mxCreateNumericArray(3, ddims, mxDOUBLE_CLASS, mxREAL);

double *dst = (double *)mxGetPr(mxdst);

double *tmp = (double *)mxCalloc(ddims[0]*sdims[1]*sdims[2], sizeof(double));

resize1dtran(src, sdims[0], tmp, ddims[0], sdims[1], sdims[2]);

resize1dtran(tmp, sdims[1], dst, ddims[1], ddims[0], sdims[2]);

mxFree(tmp);

return mxdst;

}

// matlab entry point

// dst = resize(src, scale)

// image should be color with double values

void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) {

if (nrhs != 2)

mexErrMsgTxt("Wrong number of inputs");

if (nlhs != 1)

mexErrMsgTxt("Wrong number of outputs");

plhs[0] = resize(prhs[0], prhs[1]);

}

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