Tentative attempts at primitive CGI
In order to create one of the shots I envisaged for the film, a number of tentative uses of computer manipulation had to be done.
This was done mainly in two instances: the removal of the ball used to motivate the dog and the superimposition of an old hut in a valley at night. The procedure for how the ball was removed is outlined below:
First, all the frames containing the ball were exported as still images.
Then, I used the clone brush in photoshop to erase the ball from each frame.
This left me with a matte were everything was transparent apart form the brushed over bits where the ball appears from frame to frame: i.e each blob of forest floor indicates where the ball was in each of the frames in that shot.
This was then placed over the footage in the timeline. Then a moving matte was added to make the original ball-erase-matte disappear slowly. If this second step was not taken, the actor would pass behind the ball-erase-matte and she would appear to have a hole through her body; the matte created to remove the ball would also remove a ball-sized hole form her.
The end result is a ball-free shot.
After this I cut out the sound of the ball falling on the ground and pasted over an atmos track.