zoneminder/src/zm_zone.cpp

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//
// ZoneMinder Zone Class Implementation, $Date$, $Revision$
// Copyright (C) 2003 Philip Coombes
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include "zm.h"
#include "zm_db.h"
#include "zm_zone.h"
#include "zm_image.h"
#include "zm_monitor.h"
void Zone::Setup( Monitor *p_monitor, int p_id, const char *p_label, ZoneType p_type, const Box &p_limits, const Rgb p_alarm_rgb, int p_alarm_threshold, int p_min_alarm_pixels, int p_max_alarm_pixels, const Coord &p_filter_box, int p_min_filter_pixels, int p_max_filter_pixels, int p_min_blob_pixels, int p_max_blob_pixels, int p_min_blobs, int p_max_blobs )
{
monitor = p_monitor;
id = p_id;
label = new char[strlen(p_label)+1];
strcpy( label, p_label );
type = p_type;
limits = p_limits;
alarm_rgb = p_alarm_rgb;
alarm_threshold = p_alarm_threshold;
min_alarm_pixels = p_min_alarm_pixels;
max_alarm_pixels = p_max_alarm_pixels;
filter_box = p_filter_box;
min_filter_pixels = p_min_filter_pixels;
max_filter_pixels = p_max_filter_pixels;
min_blob_pixels = p_min_blob_pixels;
max_blob_pixels = p_max_blob_pixels;
min_blobs = p_min_blobs;
max_blobs = p_max_blobs;
Info(( "Initialised zone %d/%s - %d - %dx%d - Rgb:%06x, AT:%d, MnAP:%d, MxAP:%d, FB:%dx%d, MnFP:%d, MxFP:%d, MnBS:%d, MxBS:%d, MnB:%d, MxB:%d", id, label, type, limits.Width(), limits.Height(), alarm_rgb, alarm_threshold, min_alarm_pixels, max_alarm_pixels, filter_box.X(), filter_box.Y(), min_filter_pixels, max_filter_pixels, min_blob_pixels, max_blob_pixels, min_blobs, max_blobs ));
alarmed = false;
alarm_pixels = 0;
alarm_filter_pixels = 0;
alarm_blob_pixels = 0;
alarm_blobs = 0;
min_blob_size = 0;
max_blob_size = 0;
image = 0;
score = 0;
}
Zone::~Zone()
{
delete[] label;
delete image;
}
void Zone::RecordStats( const Event *event )
{
static char sql[BUFSIZ];
sprintf( sql, "insert into Stats set MonitorId=%d, ZoneId=%d, EventId=%d, FrameId=%d, AlarmPixels=%d, FilterPixels=%d, BlobPixels=%d, Blobs=%d, MinBlobSize=%d, MaxBlobSize=%d, MinX=%d, MinY=%d, MaxX=%d, MaxY=%d, Score=%d", monitor->Id(), id, event->Id(), event->Frames()+1, alarm_pixels, alarm_filter_pixels, alarm_blob_pixels, alarm_blobs, min_blob_size, max_blob_size, alarm_box.LoX(), alarm_box.LoY(), alarm_box.HiX(), alarm_box.HiY(), score );
if ( mysql_query( &dbconn, sql ) )
{
Error(( "Can't insert event stats: %s", mysql_error( &dbconn ) ));
exit( mysql_errno( &dbconn ) );
}
}
bool Zone::CheckAlarms( const Image *delta_image )
{
bool alarm = false;
ResetStats();
delete image;
Image *diff_image = image = new Image( *delta_image );
alarm_pixels = 0;
int lo_x = limits.Lo().X();
int lo_y = limits.Lo().Y();
int hi_x = limits.Hi().X();
int hi_y = limits.Hi().Y();
for ( int y = lo_y; y <= hi_y; y++ )
{
unsigned char *pdiff = diff_image->Buffer( lo_x, y );
for ( int x = lo_x; x <= hi_x; x++, pdiff++ )
{
if ( *pdiff > alarm_threshold )
{
*pdiff = WHITE;
alarm_pixels++;
continue;
}
*pdiff = BLACK;
}
}
if ( !alarm_pixels ) return( false );
if ( min_alarm_pixels && alarm_pixels < min_alarm_pixels ) return( false );
if ( max_alarm_pixels && alarm_pixels > max_alarm_pixels ) return( false );
alarm_filter_pixels = 0;
int bx = filter_box.X();
int by = filter_box.Y();
int bx1 = bx-1;
int by1 = by-1;
// Now eliminate all pixels that don't participate in a blob
for ( int y = lo_y; y <= hi_y; y++ )
{
unsigned char *pdiff = diff_image->Buffer( lo_x, y );
for ( int x = lo_x; x <= hi_x; x++, pdiff++ )
{
if ( *pdiff == WHITE )
{
// Check participation in an X blob
int ldx = (x>=(lo_x+bx1))?-bx1:lo_x-x;
int hdx = (x<=(hi_x-bx1))?0:((hi_x-x)-bx1);
int ldy = (y>=(lo_y+by1))?-by1:lo_y-y;
int hdy = (y<=(hi_y-by1))?0:((hi_y-y)-by1);
bool blob = false;
for ( int dy = ldy; !blob && dy <= hdy; dy++ )
{
for ( int dx = ldx; !blob && dx <= hdx; dx++ )
{
blob = true;
for ( int dy2 = 0; blob && dy2 < by; dy2++ )
{
for ( int dx2 = 0; blob && dx2 < bx; dx2++ )
{
unsigned char *cpdiff = diff_image->Buffer( x+dx+dx2, y+dy+dy2 );
if ( !*cpdiff )
{
blob = false;
}
}
}
}
}
if ( !blob )
{
*pdiff = BLACK;
continue;
}
alarm_filter_pixels++;
}
}
}
if ( !alarm_filter_pixels ) return( false );
if ( min_filter_pixels && alarm_filter_pixels < min_filter_pixels ) return( false );
if ( max_filter_pixels && alarm_filter_pixels > max_filter_pixels ) return( false );
alarm_blobs = 0;
typedef struct { unsigned char tag; int count; int lo_x; int hi_x; int lo_y; int hi_y; } BlobStats;
BlobStats blob_stats[256];
memset( blob_stats, 0, sizeof(BlobStats)*256 );
for ( int y = lo_y; y <= hi_y; y++ )
{
unsigned char *pdiff = diff_image->Buffer( lo_x, y );
for ( int x = lo_x; x <= hi_x; x++, pdiff++ )
{
if ( *pdiff == WHITE )
{
//printf( "Got white pixel at %d,%d (%x)\n", x, y, pdiff );
int lx = x>lo_x?*(pdiff-1):0;
int ly = y>lo_y?*(pdiff-diff_image->Width()):0;
if ( lx )
{
//printf( "Left neighbour is %d\n", lx );
BlobStats *bsx = &blob_stats[lx];
if ( ly )
{
//printf( "Top neighbour is %d\n", ly );
BlobStats *bsy = &blob_stats[ly];
if ( lx == ly )
{
//printf( "Matching neighbours, setting to %d\n", lx );
// Add to the blob from the x side (either side really)
*pdiff = lx;
bsx->count++;
//if ( x < bsx->lo_x ) bsx->lo_x = x;
//if ( y < bsx->lo_y ) bsx->lo_y = y;
if ( x > bsx->hi_x ) bsx->hi_x = x;
if ( y > bsx->hi_y ) bsx->hi_y = y;
}
else
{
// Aggregate blobs
BlobStats *bsm = bsx->count>=bsy->count?bsx:bsy;
BlobStats *bss = bsm==bsx?bsy:bsx;
//printf( "Different neighbours, setting pixels of %d to %d\n", bss->tag, bsm->tag );
// Now change all those pixels to the other setting
for ( int sy = bss->lo_y; sy <= bss->hi_y; sy++ )
{
unsigned char *spdiff = diff_image->Buffer( bss->lo_x, sy );
for ( int sx = bss->lo_x; sx <= bss->hi_x; sx++, spdiff++ )
{
//printf( "Pixel at %d,%d (%x) is %d", sx, sy, spdiff, *spdiff );
if ( *spdiff == bss->tag )
{
//printf( ", setting" );
*spdiff = bsm->tag;
}
//printf( "\n" );
}
}
*pdiff = bsm->tag;
// Merge the slave blob into the master
bsm->count += bss->count+1;
if ( x > bsm->hi_x ) bsm->hi_x = x;
if ( y > bsm->hi_y ) bsm->hi_y = y;
if ( bss->lo_x < bsm->lo_x ) bsm->lo_x = bss->lo_x;
if ( bss->lo_y < bsm->lo_y ) bsm->lo_y = bss->lo_y;
if ( bss->hi_x > bsm->hi_x ) bsm->hi_x = bss->hi_x;
if ( bss->hi_y > bsm->hi_y ) bsm->hi_y = bss->hi_y;
// Clear out the old blob
bss->tag = 0;
bss->count = 0;
bss->lo_x = 0;
bss->lo_y = 0;
bss->hi_x = 0;
bss->hi_y = 0;
alarm_blobs--;
}
}
else
{
//printf( "Setting to left neighbour %d\n", lx );
// Add to the blob from the x side
*pdiff = lx;
bsx->count++;
//if ( x < bsx->lo_x ) bsx->lo_x = x;
//if ( y < bsx->lo_y ) bsx->lo_y = y;
if ( x > bsx->hi_x ) bsx->hi_x = x;
if ( y > bsx->hi_y ) bsx->hi_y = y;
}
}
else
{
if ( ly )
{
//printf( "Setting to top neighbour %d\n", ly );
// Add to the blob from the y side
BlobStats *bsy = &blob_stats[ly];
*pdiff = ly;
bsy->count++;
//if ( x < bsy->lo_x ) bsy->lo_x = x;
//if ( y < bsy->lo_y ) bsy->lo_y = y;
if ( x > bsy->hi_x ) bsy->hi_x = x;
if ( y > bsy->hi_y ) bsy->hi_y = y;
}
else
{
// Create a new blob
for ( int i = 1; i < WHITE; i++ )
{
BlobStats *bs = &blob_stats[i];
if ( !bs->count )
{
//printf( "Creating new blob %d\n", i );
*pdiff = i;
bs->tag = i;
bs->count++;
bs->lo_x = bs->hi_x = x;
bs->lo_y = bs->hi_y = y;
alarm_blobs++;
break;
}
}
}
}
}
}
}
if ( !alarm_blobs ) return( false );
alarm_blob_pixels = alarm_filter_pixels;
min_blob_size = 0;
max_blob_size = 0;
// Now eliminate blobs under the alarm_threshold
for ( int i = 1; i < WHITE; i++ )
{
BlobStats *bs = &blob_stats[i];
if ( bs->count && ((min_blob_pixels && bs->count < min_blob_pixels) || (max_blob_pixels && bs->count > max_blob_pixels)) )
{
//Info(( "Eliminating blob %d, %d pixels (%d,%d - %d,%d)", i, bs->count, bs->lo_x, bs->lo_y, bs->hi_x, bs->hi_y ));
for ( int sy = bs->lo_y; sy <= bs->hi_y; sy++ )
{
unsigned char *spdiff = diff_image->Buffer( bs->lo_x, sy );
for ( int sx = bs->lo_x; sx <= bs->hi_x; sx++, spdiff++ )
{
if ( *spdiff == bs->tag )
{
*spdiff = BLACK;
}
}
}
alarm_blobs--;
alarm_blob_pixels -= bs->count;
bs->tag = 0;
bs->count = 0;
bs->lo_x = 0;
bs->lo_y = 0;
bs->hi_x = 0;
bs->hi_y = 0;
}
else
{
if ( bs->count )
{
if ( !min_blob_size || bs->count < min_blob_size ) min_blob_size = bs->count;
if ( !max_blob_size || bs->count > max_blob_size ) max_blob_size = bs->count;
}
}
}
if ( !alarm_blobs ) return( false );
if ( min_blobs && alarm_blobs < min_blobs ) return( false );
if ( max_blobs && alarm_blobs > max_blobs ) return( false );
int alarm_lo_x = hi_x+1;
int alarm_hi_x = lo_x-1;
int alarm_lo_y = hi_y+1;
int alarm_hi_y = lo_y-1;
for ( int i = 1; i < WHITE; i++ )
{
BlobStats *bs = &blob_stats[i];
if ( bs->count )
{
if ( alarm_lo_x > bs->lo_x ) alarm_lo_x = bs->lo_x;
if ( alarm_lo_y > bs->lo_y ) alarm_lo_y = bs->lo_y;
if ( alarm_hi_x < bs->hi_x ) alarm_hi_x = bs->hi_x;
if ( alarm_hi_y < bs->hi_y ) alarm_hi_y = bs->hi_y;
}
}
alarm_box = Box( Coord( alarm_lo_x, alarm_lo_y ), Coord( alarm_hi_x, alarm_hi_y ) );
score = ((100*alarm_blob_pixels)/int(sqrt((double)alarm_blobs)))/(limits.Size().X()*limits.Size().Y());
if ( type == INCLUSIVE )
{
score /= 2;
}
else if ( type == EXCLUSIVE )
{
score *= 2;
}
// Now outline the changed region
if ( alarm_blobs )
{
alarm = true;
if ( (type < PRECLUSIVE) && (bool)config.Item( ZM_CREATE_ANALYSIS_IMAGES ) )
{
image = diff_image->HighlightEdges( alarm_rgb, &limits );
// Only need to delete this when 'image' becomes detached and points somewhere else
delete diff_image;
}
Info(( "%s: Alarm Pixels: %d, Filter Pixels: %d, Blob Pixels: %d, Blobs: %d, Score: %d", Label(), alarm_pixels, alarm_filter_pixels, alarm_blob_pixels, alarm_blobs, score ));
}
return( true );
}
int Zone::Load( Monitor *monitor, Zone **&zones )
{
static char sql[BUFSIZ];
sprintf( sql, "select Id,Name,Type+0,Units,LoX,LoY,HiX,HiY,AlarmRGB,AlarmThreshold,MinAlarmPixels,MaxAlarmPixels,FilterX,FilterY,MinFilterPixels,MaxFilterPixels,MinBlobPixels,MaxBlobPixels,MinBlobs,MaxBlobs from Zones where MonitorId = %d order by Type, Id", monitor->Id() );
if ( mysql_query( &dbconn, sql ) )
{
Error(( "Can't run query: %s", mysql_error( &dbconn ) ));
exit( mysql_errno( &dbconn ) );
}
MYSQL_RES *result = mysql_store_result( &dbconn );
if ( !result )
{
Error(( "Can't use query result: %s", mysql_error( &dbconn ) ));
exit( mysql_errno( &dbconn ) );
}
int n_zones = mysql_num_rows( result );
Info(( "Got %d zones for monitor %s", n_zones, monitor->Name() ));
delete[] zones;
zones = new Zone *[n_zones];
for( int i = 0; MYSQL_ROW dbrow = mysql_fetch_row( result ); i++ )
{
int Id = atoi(dbrow[0]);
const char *Name = dbrow[1];
int Type = atoi(dbrow[2]);
const char *Units = dbrow[3];
int LoX = atoi(dbrow[4]);
int LoY = atoi(dbrow[5]);
int HiX = atoi(dbrow[6]);
int HiY = atoi(dbrow[7]);
int AlarmRGB = dbrow[8]?atoi(dbrow[8]):0;
int AlarmThreshold = dbrow[9]?atoi(dbrow[9]):0;
int MinAlarmPixels = dbrow[10]?atoi(dbrow[10]):0;
int MaxAlarmPixels = dbrow[11]?atoi(dbrow[11]):0;
int FilterX = dbrow[12]?atoi(dbrow[12]):0;
int FilterY = dbrow[13]?atoi(dbrow[13]):0;
int MinFilterPixels = dbrow[14]?atoi(dbrow[14]):0;
int MaxFilterPixels = dbrow[15]?atoi(dbrow[15]):0;
int MinBlobPixels = dbrow[16]?atoi(dbrow[16]):0;
int MaxBlobPixels = dbrow[17]?atoi(dbrow[17]):0;
int MinBlobs = dbrow[18]?atoi(dbrow[18]):0;
int MaxBlobs = dbrow[19]?atoi(dbrow[19]):0;
if ( !strcmp( Units, "Percent" ) )
{
LoX = (LoX*(monitor->Width()-1))/100;
LoY = (LoY*(monitor->Height()-1))/100;
HiX = (HiX*(monitor->Width()-1))/100;
HiY = (HiY*(monitor->Height()-1))/100;
MinAlarmPixels = (MinAlarmPixels*monitor->Width()*monitor->Height())/100;
MaxAlarmPixels = (MaxAlarmPixels*monitor->Width()*monitor->Height())/100;
MinFilterPixels = (MinFilterPixels*monitor->Width()*monitor->Height())/100;
MaxFilterPixels = (MaxFilterPixels*monitor->Width()*monitor->Height())/100;
MinBlobPixels = (MinBlobPixels*monitor->Width()*monitor->Height())/100;
MaxBlobPixels = (MaxBlobPixels*monitor->Width()*monitor->Height())/100;
}
if ( atoi(dbrow[2]) == Zone::INACTIVE )
{
zones[i] = new Zone( monitor, Id, Name, Box( LoX, LoY, HiX, HiY ) );
}
else
{
zones[i] = new Zone( monitor, Id, Name, (Zone::ZoneType)Type, Box( LoX, LoY, HiX, HiY ), AlarmRGB, AlarmThreshold, MinAlarmPixels, MaxAlarmPixels, Coord( FilterX, FilterY ), MinFilterPixels, MaxFilterPixels, MinBlobPixels, MaxBlobPixels, MinBlobs, MaxBlobs );
}
}
if ( mysql_errno( &dbconn ) )
{
Error(( "Can't fetch row: %s", mysql_error( &dbconn ) ));
exit( mysql_errno( &dbconn ) );
}
// Yadda yadda
mysql_free_result( result );
return( n_zones );
}
bool Zone::DumpSettings( char *output, bool verbose )
{
output[0] = 0;
sprintf( output+strlen(output), " Id : %d\n", id );
sprintf( output+strlen(output), " Label : %s\n", label );
sprintf( output+strlen(output), " Type: %d - %s\n", type,
type==ACTIVE?"Active":(
type==INCLUSIVE?"Inclusive":(
type==EXCLUSIVE?"Exclusive":(
type==PRECLUSIVE?"Preclusive":(
type==INACTIVE?"Inactive":"Unknown"
)))));
sprintf( output+strlen(output), " Limits : %d,%d - %d,%d\n", limits.LoX(), limits.LoY(), limits.HiX(), limits.HiY() );
sprintf( output+strlen(output), " Alarm RGB : %06x\n", alarm_rgb );
sprintf( output+strlen(output), " Alarm Threshold : %d\n", alarm_threshold );
sprintf( output+strlen(output), " Min Alarm Pixels : %d\n", min_alarm_pixels );
sprintf( output+strlen(output), " Max Alarm Pixels : %d\n", max_alarm_pixels );
sprintf( output+strlen(output), " Filter Box : %d,%d\n", filter_box.X(), filter_box.Y() );
sprintf( output+strlen(output), " Min Filter Pixels : %d\n", min_filter_pixels );
sprintf( output+strlen(output), " Max Filter Pixels : %d\n", max_filter_pixels );
sprintf( output+strlen(output), " Min Blob Pixels : %d\n", min_blob_pixels );
sprintf( output+strlen(output), " Max Blob Pixels : %d\n", max_blob_pixels );
sprintf( output+strlen(output), " Min Blobs : %d\n", min_blobs );
sprintf( output+strlen(output), " Max Blobs : %d\n", max_blobs );
return( true );
}