The motion picture history (MHI) is a static picture template helps in understanding the motion location and path as it progressed.  In MHI, the temporal motion information is collapsed into a single image template. Thus, the MHI pixel intensity is a function of the motion history at that location, where brighter values correspond to a more recent motion. Using MHI, moving parts of a video sequence can be a single image, from where one can predict the motion for the moving parts of the video action.
Some important features of the MHI representation are: 
- It represents a motion sequence in a compact manner. In this case, the silhouette sequence is condensed into a grayscale image, where dominant motion information is preserved.
- MHI can be created and implemented in low illumination conditions where the structure can not be easily detected otherwise.
- The MHI is not so sensitive to silhouette, holes, shadows, and missing parts.
- The gray-scale MHI is sensitive to the direction of motion because it can demonstrate the direction of the motion.
- It keeps a history of temporal changes at each pixel location, which then decays over time.
- The MHI expresses the motion for orbit by using the intensity of each pixel in a temporal manner.
For Each time t B t : = absolute_difference ( I t , I t -1 )> threshold end for
for each time t for each pixel (x, y) if B t (x, y) = 1 MHI t (x, y) : = τ else if MHI t -1 ≠ 0 MHI t (x, y) : = MHI t -1 (x, y) - 1 else MHI t (x, y) : = 0 end if end for
- Jump up^ “Research: Motion History Images” . Retrieved 13 November 2014 .
- Jump up^ Ahad, Md Atiqur Rahman. Motion history images for action recognition and understanding. Springer Science & Business Media, 2012.