JeVoisBase  1.0
JeVois Smart Embedded Machine Vision Toolkit Base Modules
env_pyr.c
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1 /*!@file Envision/env_pyr.c */
2 
3 // //////////////////////////////////////////////////////////////////// //
4 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005 //
5 // by the University of Southern California (USC) and the iLab at USC. //
6 // See http://iLab.usc.edu for information about this project. //
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8 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
9 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
10 // in Visual Environments, and Applications'' by Christof Koch and //
11 // Laurent Itti, California Institute of Technology, 2001 (patent //
12 // pending; application number 09/912,225 filed July 23, 2001; see //
13 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status). //
14 // //////////////////////////////////////////////////////////////////// //
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33 // Primary maintainer for this file: Rob Peters <rjpeters at usc dot edu>
34 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Envision/env_pyr.c $
35 // $Id: env_pyr.c 7628 2007-01-03 04:07:21Z rjpeters $
36 //
37 
39 
40 // ######################################################################
41 void env_pyr_init(struct env_pyr* pyr, const env_size_t n)
42 {
43  pyr->images = (struct env_image*)env_allocate(n * sizeof(struct env_image));
44 
45  pyr->depth = n;
46 
47  for (env_size_t i = 0; i < pyr->depth; ++i) env_img_init_empty(&pyr->images[i]);
48 }
49 
50 // ######################################################################
51 void env_pyr_make_empty(struct env_pyr* dst)
52 {
53  for (env_size_t i = 0; i < dst->depth; ++i) env_img_make_empty(&dst->images[i]);
54  env_deallocate(dst->images);
55  dst->images = 0;
56  dst->depth = 0;
57 }
58 
59 // ######################################################################
60 void env_pyr_swap(struct env_pyr* pyr1, struct env_pyr* pyr2)
61 {
62  const struct env_pyr pyr1copy = *pyr1;
63  *pyr1 = *pyr2;
64  *pyr2 = pyr1copy;
65 }
66 
67 // ######################################################################
68 void env_pyr_copy_src_dst(const struct env_pyr* src, struct env_pyr* dst)
69 {
70  if (dst == src) return;
71 
72  if (dst->depth != src->depth)
73  {
74  for (env_size_t i = 0; i < dst->depth; ++i) env_img_make_empty(&dst->images[i]);
75  env_deallocate(dst->images);
76  dst->images = (struct env_image*)env_allocate(src->depth * sizeof(struct env_image));
77  dst->depth = src->depth;
78  for (env_size_t i = 0; i < dst->depth; ++i) env_img_init_empty(&dst->images[i]);
79  }
80 
81  for (env_size_t i = 0; i < dst->depth; ++i) env_img_copy_src_dst(&src->images[i], &dst->images[i]);
82 }
void env_img_copy_src_dst(const struct env_image *src, struct env_image *dst)
Definition: env_image.c:76
void env_img_make_empty(struct env_image *img)
Definition: env_image.c:56
Basic image class.
Definition: env_image.h:43
void env_deallocate(void *mem)
Definition: env_config.h:59
void env_pyr_init(struct env_pyr *pyr, const env_size_t n)
Construct with a given number of empty images.
Definition: env_pyr.c:41
void env_pyr_copy_src_dst(const struct env_pyr *src, struct env_pyr *dst)
Definition: env_pyr.c:68
env_size_t depth
Definition: env_pyr.h:48
void * env_allocate(unsigned long nbytes)
Definition: env_config.h:58
unsigned long env_size_t
Definition: env_types.h:71
void env_pyr_make_empty(struct env_pyr *dst)
Definition: env_pyr.c:51
This class implements a set of images, often used as a dyadic pyramid.
Definition: env_pyr.h:45
void env_pyr_swap(struct env_pyr *pyr1, struct env_pyr *pyr2)
Swap contents with another env_pyr.
Definition: env_pyr.c:60
struct env_image * images
Definition: env_pyr.h:47