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 | 1 | initial version |
the flow matrix contains the gradient of the movement between 2 frames. for each pixel location in the original frame, the channels contain dx and dy, so that prev_x + dx = cur_x, and prev_y + dy = cur_y.
(note, that the LK method writes absolute new position into the flow vector, while the farneback one writes differences)
| | 2 | No.2 Revision |
the flow matrix contains the gradient of the movement between 2 frames. for each pixel location in the original frame, the channels contain dx and dy, so that prev_x + dx = cur_x, and prev_y + dy = cur_y.
here is a sample with visualization code
(note, that the LK method writes absolute new position into the flow vector, while the farneback one writes differences)
