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latest reference frame algo with motion feedback. still sensitive to brightness changes.

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This commit is contained in:
JoergWeber
2007-10-16 20:49:42 +00:00
parent 307987a52b
commit 35f8f66a76
1 changed files with 8 additions and 7 deletions
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15
alg.c
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@@ -1066,19 +1066,20 @@ int alg_switchfilter(struct context *cnt, int diffs, unsigned char *newimg)
#define ACCEPT_STATIC_OBJECT_TIME 5
#define DISCARD_STATIC_OBJECT_TIME 60
#define BLOCK_PIXEL_DURATION 1
#define EXCLUDE_LEVEL_PERCENT 40
#define EXCLUDE_LEVEL_PERCENT 30
void alg_update_reference_frame(struct context *cnt, int action)
{
// int accept_timer = cnt->lastrate * ACCEPT_STATIC_OBJECT_TIME;
// int discard_timer = cnt->lastrate * (-DISCARD_STATIC_OBJECT_TIME);
int block_timer = cnt->lastrate * (-BLOCK_PIXEL_DURATION);
int accept_timer = cnt->lastrate * cnt->conf.in_timer;
int discard_timer = cnt->lastrate * (-cnt->conf.out_timer);
// int discard_timer = cnt->lastrate * (-cnt->conf.out_timer);
int i, threshold_ref;
int *ref_dyn = cnt->imgs.ref_dyn;
unsigned char *image_virgin = cnt->imgs.image_virgin;
unsigned char *ref = cnt->imgs.ref;
unsigned char *smartmask = cnt->imgs.smartmask_final;
unsigned char *out = cnt->imgs.out;
if (action == UPDATE_REF_FRAME) { /* black&white only for better performance */
// threshold_ref = cnt->noise * EXCLUDE_LEVEL_PERCENT / 100;
@@ -1096,22 +1097,22 @@ void alg_update_reference_frame(struct context *cnt, int action)
else if (*ref_dyn > accept_timer) { /* Include static Object after some time */
*ref_dyn = -1;
*ref = *image_virgin;
} else {
(*ref_dyn)++; /* Motionpixel? Exclude from ref frame */
}
else if (*out)
(*ref_dyn)++; /* Motionpixel? Exclude from ref frame */
}
else { /* No motion: copy to ref frame */
*ref = *image_virgin;
if ((*ref_dyn >= 0) || (*ref_dyn == discard_timer)) /* Discard static object again after a while */
if ((*ref_dyn >= 0) || (*ref_dyn < block_timer)) /* reset pixel */
*ref_dyn = 0;
else
//(*ref_dyn)--; /* Still keep static object in mind */
(*ref_dyn) = 0; /* Still keep static object in mind */
(*ref_dyn)--; /* blocked pixel */
}
ref++;
image_virgin++;
smartmask++;
ref_dyn++;
out++;
} /* end for i */
} else { /* action == RESET_REF_FRAME - also used to initialize the frame at startup */
memcpy(cnt->imgs.ref, cnt->imgs.image_virgin, cnt->imgs.size); /* copy fresh image */