diff options
Diffstat (limited to 'SD-VBS/benchmarks/texture_synthesis/src/matlab/MEX/histo.c')
-rwxr-xr-x | SD-VBS/benchmarks/texture_synthesis/src/matlab/MEX/histo.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/SD-VBS/benchmarks/texture_synthesis/src/matlab/MEX/histo.c b/SD-VBS/benchmarks/texture_synthesis/src/matlab/MEX/histo.c deleted file mode 100755 index 43a99c7..0000000 --- a/SD-VBS/benchmarks/texture_synthesis/src/matlab/MEX/histo.c +++ /dev/null | |||
@@ -1,140 +0,0 @@ | |||
1 | /* | ||
2 | [N, X] = histo(MTX, NBINS_OR_BINSIZE, BIN_CENTER) | ||
3 | >>> See histo.m for documentation <<< | ||
4 | EPS, ported from OBVIUS, 3/97. | ||
5 | */ | ||
6 | |||
7 | #define V4_COMPAT | ||
8 | #include <matrix.h> /* Matlab matrices */ | ||
9 | #include <mex.h> | ||
10 | |||
11 | #include <stddef.h> /* NULL */ | ||
12 | #include <math.h> /* ceil */ | ||
13 | |||
14 | #define notDblMtx(it) (!mxIsNumeric(it) || !mxIsDouble(it) || mxIsSparse(it) || mxIsComplex(it)) | ||
15 | |||
16 | #define PAD 0.49999 /* A hair below 1/2, to avoid roundoff errors */ | ||
17 | #define MAXBINS 20000 | ||
18 | |||
19 | void mexFunction(int nlhs, /* Num return vals on lhs */ | ||
20 | mxArray *plhs[], /* Matrices on lhs */ | ||
21 | int nrhs, /* Num args on rhs */ | ||
22 | const mxArray *prhs[] /* Matrices on rhs */ | ||
23 | ) | ||
24 | { | ||
25 | register double temp; | ||
26 | register int binnum, i, size; | ||
27 | register double *im, binsize; | ||
28 | register double origin, *hist, mn, mx, mean; | ||
29 | register int nbins; | ||
30 | double *bincenters; | ||
31 | mxArray *arg; | ||
32 | double *mxMat; | ||
33 | |||
34 | if (nrhs < 1 ) mexErrMsgTxt("requires at least 1 argument."); | ||
35 | |||
36 | /* ARG 1: MATRIX */ | ||
37 | arg = prhs[0]; | ||
38 | if notDblMtx(arg) mexErrMsgTxt("MTX arg must be a real non-sparse matrix."); | ||
39 | im = mxGetPr(arg); | ||
40 | size = (int) mxGetM(arg) * mxGetN(arg); | ||
41 | |||
42 | /* FIND min, max, mean values of MTX */ | ||
43 | mn = *im; mx = *im; binsize = 0; | ||
44 | for (i=1; i<size; i++) | ||
45 | { | ||
46 | temp = im[i]; | ||
47 | if (temp < mn) | ||
48 | mn = temp; | ||
49 | else if (temp > mx) | ||
50 | mx = temp; | ||
51 | binsize += temp; | ||
52 | } | ||
53 | mean = binsize / size; | ||
54 | |||
55 | /* ARG 3: BIN_CENTER */ | ||
56 | if (nrhs > 2) | ||
57 | { | ||
58 | arg = prhs[2]; | ||
59 | if notDblMtx(arg) mexErrMsgTxt("BIN_CENTER arg must be a real scalar."); | ||
60 | if (mxGetM(arg) * mxGetN(arg) != 1) | ||
61 | mexErrMsgTxt("BIN_CENTER must be a real scalar."); | ||
62 | mxMat= mxGetPr(arg); | ||
63 | origin = *mxMat; | ||
64 | } | ||
65 | else | ||
66 | origin = mean; | ||
67 | |||
68 | /* ARG 2: If positive, NBINS. If negative, -BINSIZE. */ | ||
69 | if (nrhs > 1) | ||
70 | { | ||
71 | arg = prhs[1]; | ||
72 | if notDblMtx(arg) mexErrMsgTxt("NBINS_OR_BINSIZE arg must be a real scalar."); | ||
73 | if (mxGetM(arg) * mxGetN(arg) != 1) | ||
74 | mexErrMsgTxt("NBINS_OR_BINSIZE must be a real scalar."); | ||
75 | mxMat= mxGetPr(arg); | ||
76 | binsize = *mxMat; | ||
77 | } | ||
78 | else | ||
79 | { | ||
80 | binsize = 101; /* DEFAULT: 101 bins */ | ||
81 | } | ||
82 | |||
83 | /* -------------------------------------------------- | ||
84 | Adjust origin, binsize, nbins such that | ||
85 | mx <= origin + (nbins-1)*binsize + PAD*binsize | ||
86 | mn >= origin - PAD*binsize | ||
87 | -------------------------------------------------- */ | ||
88 | if (binsize < 0) /* user specified BINSIZE */ | ||
89 | { | ||
90 | binsize = -binsize; | ||
91 | origin -= binsize * ceil((origin-mn-PAD*binsize)/binsize); | ||
92 | nbins = (int) ceil((mx-origin-PAD*binsize)/binsize) + 1; | ||
93 | } | ||
94 | else /* user specified NBINS */ | ||
95 | { | ||
96 | nbins = (int) (binsize + 0.5); /* round to int */ | ||
97 | if (nbins == 0) | ||
98 | mexErrMsgTxt("NBINS must be greater than zero."); | ||
99 | binsize = (mx-mn)/(nbins-1+2*PAD); /* start with lower bound */ | ||
100 | i = ceil((origin-mn-binsize/2)/binsize); | ||
101 | if ( mn < (origin-i*binsize-PAD*binsize) ) | ||
102 | binsize = (origin-mn)/(i+PAD); | ||
103 | else if ( mx > (origin+(nbins-1-i)*binsize+PAD*binsize) ) | ||
104 | binsize = (mx-origin)/((nbins-1-i)+PAD); | ||
105 | origin -= binsize * ceil((origin-mn-PAD*binsize)/binsize); | ||
106 | } | ||
107 | |||
108 | if (nbins > MAXBINS) | ||
109 | { | ||
110 | mexPrintf("nbins: %d, MAXBINS: %d\n",nbins,MAXBINS); | ||
111 | mexErrMsgTxt("Number of histo bins has exceeded maximum"); | ||
112 | } | ||
113 | |||
114 | /* Allocate hist and xvals */ | ||
115 | plhs[0] = (mxArray *) mxCreateDoubleMatrix(1,nbins,mxREAL); | ||
116 | if (plhs[0] == NULL) mexErrMsgTxt("Error allocating result matrix"); | ||
117 | hist = mxGetPr(plhs[0]); | ||
118 | |||
119 | if (nlhs > 1) | ||
120 | { | ||
121 | plhs[1] = (mxArray *) mxCreateDoubleMatrix(1,nbins,mxREAL); | ||
122 | if (plhs[1] == NULL) mexErrMsgTxt("Error allocating result matrix"); | ||
123 | bincenters = mxGetPr(plhs[1]); | ||
124 | for (i=0, temp=origin; i<nbins; i++, temp+=binsize) | ||
125 | bincenters[i] = temp; | ||
126 | } | ||
127 | |||
128 | for (i=0; i<size; i++) | ||
129 | { | ||
130 | binnum = (int) ((im[i] - origin)/binsize + 0.5); | ||
131 | if ((binnum < nbins) && (binnum >= 0)) | ||
132 | (hist[binnum]) += 1.0; | ||
133 | else | ||
134 | printf("HISTO warning: value %f outside of range [%f,%f]\n", | ||
135 | im[i], origin-0.5*binsize, origin+(nbins-0.5)*binsize); | ||
136 | } | ||
137 | |||
138 | return; | ||
139 | } | ||
140 | |||