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1 #define PI 3.1415926535897932
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2 #define INVROOT2 0.7071067814
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3
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4 void open_image(FILE *in, int *width, int *height);
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5 void load_image(int **im, FILE *in, int width, int height);
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6 void save_image(int **im, FILE *out, int width, int height);
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7 int ** imatrix(int nrows, int ncols);
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8 void freematrix(int **I, int rows);
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9 float ran0(long int *idum);
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10 float gasdev(long int *idum);
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11 void put_image_from_int_2_double(int **i, double *f, int N);
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12 void put_image_from_double_2_int(double *f, int **i, int N);
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13 void fct2d(double f[], int nrows, int ncols);
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14 void ifct2d(double f[], int nrows, int ncols);
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15 void matmul(double **a, double **b, double **r, int N);
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16 void hartley(double **in, double **out, int N);
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17 double ** dmatrix(int nrows, int ncols);
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18 void freematrix_d(double **I, int rows);
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19 void hartley(double **in, double **out, int N);
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20 void matrix_i2d(int **i, double **d, int N);
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21 void matrix_d2i(double **d, int **i, int N);
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22 void put_matrix_2_vector(double **i, double *f, int N);
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23 void put_vector_2_matrix(double *f, double **i, int N);
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24 double * dvector(long int N);
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25
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26 void wm_init();
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27 void wm_init1();
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28 void wm_init2();
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