The invention discloses a video region-of-interest extraction method based on
visual perception characteristics and encoding information, and relates to the field of
video encoding. The video region-of-interest extraction method comprises the following steps of (1) extracting luminance information of a current encoding
macro-block from a primary video
stream, (2) identifying a space domain visual characteristic saliency region through an inter-frame prediction mode type of the current encoding
macro-block, (3) using a
mean motion vector, in the horizontal direction, of a previous encoding
macro-block and a
mean motion vector, in the
perpendicular direction, of the previous encoding macro-block as dual dynamic thresholds, identifying a
time domain visual characteristic saliency region according to the result of comparison among a
motion vector, in the horizontal direction, of the current encoding macro-block, a
motion vector, in the
perpendicular direction, of the current encoding macro-block and the dual dynamic thresholds, and (4) defining a video interest priority through combination of the identification result of the space domain visual characteristic saliency region and the identification result of the
time domain visual characteristic saliency region, and achieving automatic extraction of a
region of interest of a video. According to the video region-of-interest extraction method, the important encoding basis can be provided for the
video encoding technology based on the ROI.