Estimate Pedestrian Feet Coordinates from Head Coordinates[x y] only

Hi I am stuck in a problem, I want to estimate the coordinates of human feet, given that I have the coordinates of head. That is , I have [x y] locations of a pedestrians head in an image and I want to estimate the [x y] locations of feet. One doesnt need to be too precise, average accuracy is also acceptable. Can any 1 suggest me

[Joseph Cheng]

you'll need to supply more information such as:

1. is your image from above looking down
2. is your image from the side and are feet within the image?
3. what is the swathwidth of the image.

that last question is basically i can take a picture of the top of my head filling the whole frame so my feet locations are either going to be right under my head or out of frame.

or if i take a satellite picture of my head from orbit my feet are probably going to be +/-1 pixels from my head's xy point.

[irtiza]

Have a look Hope it answer all three of your questions.