Leptonica  1.82.0
Image processing and image analysis suite
colormorph.c
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1 /*====================================================================*
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25  *====================================================================*/
26 
41 #ifdef HAVE_CONFIG_H
42 #include <config_auto.h>
43 #endif /* HAVE_CONFIG_H */
44 
45 #include "allheaders.h"
46 
47 /*-----------------------------------------------------------------*
48  * Top-level color morphological operations *
49  *-----------------------------------------------------------------*/
68 PIX *
70  l_int32 type,
71  l_int32 hsize,
72  l_int32 vsize)
73 {
74 PIX *pixr, *pixg, *pixb, *pixrm, *pixgm, *pixbm, *pixd;
75 
76  PROCNAME("pixColorMorph");
77 
78  if (!pixs)
79  return (PIX *)ERROR_PTR("pixs not defined", procName, NULL);
80  if (pixGetDepth(pixs) != 32)
81  return (PIX *)ERROR_PTR("pixs not 32 bpp", procName, NULL);
82  if (type != L_MORPH_DILATE && type != L_MORPH_ERODE &&
83  type != L_MORPH_OPEN && type != L_MORPH_CLOSE)
84  return (PIX *)ERROR_PTR("invalid morph type", procName, NULL);
85  if (hsize < 1 || vsize < 1)
86  return (PIX *)ERROR_PTR("hsize or vsize < 1", procName, NULL);
87  if ((hsize & 1) == 0 ) {
88  L_WARNING("horiz sel size must be odd; increasing by 1\n", procName);
89  hsize++;
90  }
91  if ((vsize & 1) == 0 ) {
92  L_WARNING("vert sel size must be odd; increasing by 1\n", procName);
93  vsize++;
94  }
95 
96  if (hsize == 1 && vsize == 1)
97  return pixCopy(NULL, pixs);
98 
99  pixr = pixGetRGBComponent(pixs, COLOR_RED);
100  pixg = pixGetRGBComponent(pixs, COLOR_GREEN);
101  pixb = pixGetRGBComponent(pixs, COLOR_BLUE);
102  if (type == L_MORPH_DILATE) {
103  pixrm = pixDilateGray(pixr, hsize, vsize);
104  pixgm = pixDilateGray(pixg, hsize, vsize);
105  pixbm = pixDilateGray(pixb, hsize, vsize);
106  } else if (type == L_MORPH_ERODE) {
107  pixrm = pixErodeGray(pixr, hsize, vsize);
108  pixgm = pixErodeGray(pixg, hsize, vsize);
109  pixbm = pixErodeGray(pixb, hsize, vsize);
110  } else if (type == L_MORPH_OPEN) {
111  pixrm = pixOpenGray(pixr, hsize, vsize);
112  pixgm = pixOpenGray(pixg, hsize, vsize);
113  pixbm = pixOpenGray(pixb, hsize, vsize);
114  } else { /* type == L_MORPH_CLOSE */
115  pixrm = pixCloseGray(pixr, hsize, vsize);
116  pixgm = pixCloseGray(pixg, hsize, vsize);
117  pixbm = pixCloseGray(pixb, hsize, vsize);
118  }
119  pixd = pixCreateRGBImage(pixrm, pixgm, pixbm);
120  pixDestroy(&pixr);
121  pixDestroy(&pixrm);
122  pixDestroy(&pixg);
123  pixDestroy(&pixgm);
124  pixDestroy(&pixb);
125  pixDestroy(&pixbm);
126 
127  return pixd;
128 }
PIX * pixColorMorph(PIX *pixs, l_int32 type, l_int32 hsize, l_int32 vsize)
pixColorMorph()
Definition: colormorph.c:69
PIX * pixCloseGray(PIX *pixs, l_int32 hsize, l_int32 vsize)
pixCloseGray()
Definition: graymorph.c:526
PIX * pixDilateGray(PIX *pixs, l_int32 hsize, l_int32 vsize)
pixDilateGray()
Definition: graymorph.c:278
PIX * pixOpenGray(PIX *pixs, l_int32 hsize, l_int32 vsize)
pixOpenGray()
Definition: graymorph.c:394
PIX * pixErodeGray(PIX *pixs, l_int32 hsize, l_int32 vsize)
pixErodeGray()
Definition: graymorph.c:162
void pixDestroy(PIX **ppix)
pixDestroy()
Definition: pix1.c:621
PIX * pixCopy(PIX *pixd, const PIX *pixs)
pixCopy()
Definition: pix1.c:705
PIX * pixGetRGBComponent(PIX *pixs, l_int32 comp)
pixGetRGBComponent()
Definition: pix2.c:2479
PIX * pixCreateRGBImage(PIX *pixr, PIX *pixg, PIX *pixb)
pixCreateRGBImage()
Definition: pix2.c:2423
@ COLOR_BLUE
Definition: pix.h:206
@ COLOR_RED
Definition: pix.h:204
@ COLOR_GREEN
Definition: pix.h:205
Definition: pix.h:139