i am doing background subtraction .i have acheived that but there is one problem , background subtraction get overlapped with background model(stored initial frame).it is not only background subtraction. i have done it in grayscale using cb=cr=0x80.i am using pal system
the function for storing background model(copyframe),the function for background subtraction(subtract) & the function for returning frame(writeframe) to vpbe driver are as follows respectively
1)
void copyframe(void *currentFrame)
{ int xx = 0;
for( xx = 0; xx < 829440; xx+=1 )
arr[xx]=*( ( (unsigned char*)currentFrame+xx ));
}
2)
void subtract(void *currentFrame)
{
int xx = 0;
for( xx = 1; xx < 829439; xx+=2 )
{
arr1[xx]=*( ( (unsigned char*)currentFrame+xx ))-arr[xx];
arr1[xx-1]=arr[xx-1];
}
}
3)
void writeframe(void *currentFrame)
{
int xx = 0;
for( xx = 0; xx < 829440; xx+=1 )
*( ( (unsigned char*)currentFrame+xx ))=arr1[xx];
}
arr[xx] is array for background model of size 829440 i.e,(720*576*2)
arr1xx] is array for background subtracted frame of size 829440 i.e,(720*576*2)
