Video encoding device

摘要

Provided is a video encoding device having an AFF-mode-determining unit (140) for determining the AFF mode when an input image is an interlaced image, and a video encoding unit (110) for encoding the input image depending on a result of the mode determination obtained from the AFF-mode-determining unit (140). The AFF-mode-determining unit (140) makes a determination combining: a mode determination result based on each of a texture value when an image is treated as a field and a frame, or based on an equivalent object; and a mode determination result based on the ease of predicting a motion vector in both encodings estimated with reference to a previously obtained movement vector, or based on the cost.

主权项

1. A video encoding device, comprising:
an AFF mode determining unit configured to perform a mode integration determination of adaptive field/frame coding when an input image is an interlaced image; and a video encoding unit configured to encode the input image according to a determination result of the mode determination by the AFF mode determining unit, wherein the AFF mode determining unit includes: a vertical pixel difference (VPD) determination unit configured to perform a mode determination of the adaptive field/frame coding by estimating a texture value in the field coding of the input image based on an absolute difference of pixel values between a top field and a bottom field constituting a pair, estimating a texture value in the frame coding based on an absolute difference of pixel values between adjacent lines in the top field or the bottom field, and selecting the coding that gives a smaller texture value; a motion vector (MV) determination unit configured to perform a mode determination of the adaptive field/frame coding by receiving motion vector information that is a result of inter-frame prediction of a picture that has been subjected to an encoding process in the video encoding unit, estimating a motion vector cost by assigning different weights to x and y components of the vector information, and calculating the number of times at which the estimated cost exceeds a critical value; and an integration determination unit configured to perform the mode integration determination based on a mode determination result in the VPD determination unit and a mode determination result in the MV determination unit.