It was found that motion vectors are most likely to be selected in static or slow motion areas and disparity vectors are used only in fast motion areas.
Between the dual frames, one is the immediate previous frame and the other is the McFIS, assuming that motion areas and normal/uncovered static areas will be referenced from the immediate previous frame and the McFIS, respectively, through Lagrangian optimization.
Further work is necessary to determine if other functionally defined regions, such as retinopically defined early visual areas, the visual motion area MT, and auditory areas, are also better aligned.
One class of visual stimuli, composed of alternate stripes of opposing motion requires at least 2 separate stages of computation within this cortical hierarchy, thought to involve cortical area V1 and extra-striate regions like global motion area MT respectively.
Finally, area MT/V5, the pre-eminent motion area, shows sensitivity to 'static' object shape in the presence and even in the absence of implied motion cues (Kourtzi and Kanwisher, 2000; Kourtzi et al., 2002).
In addition, it produced activity bilaterally elsewhere in the fusiform gyrus, at (b) (42, −81, −15) and (c) (−42, −81, −12), close to the visual motion area, V5.
The first proposed method to determine the motionless or slow motion area is based on a thresholding technique.
If the motion activity is less than the threshold, disparity estimation is skipped, because the macroblock is located in a motionless or slow motion area.
Little is known about how non-V1 inputs influence motion area V5/MT+.
