Can someone please help me code this right in MATLAB..even a simple one will do the job. its a background subtraction with frame difference as the method used

Read the input Video.

Start reading the frames, read the first image and convert the first image to Gray Image format.

Determine the size of the video.

Now, start reading the consecutive frames in the looping mode.

Declare the Optimal threshold value.

Find the absolute difference between two consecutive frames.

If the difference in the pixel value is greater than the threshold level, then consider it as a Foreground Content (assign value as 1 for white), else as Background Content (assign value as 0 for black)