Dynamic image encoding device and dynamic image decoding device
A technology for moving images and encoding devices, which is applied to image communication, television, electrical components, etc., can solve problems such as image quality degradation, motion compensation prediction accuracy reduction, and exploration area narrowing, and achieve the effect of preventing image quality degradation.
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Embodiment approach 1
[0034] figure 1 It is a configuration diagram showing the connection relationship between the video encoding device and the video decoding device according to Embodiment 1 of the present invention.
[0035] exist figure 1 Among them, the moving image coding device 1 is a coding device using an encoding method such as H.264 / AVC, and when moving image data (video signal) of a moving image is input, a plurality of pictures constituting the moving image data are divided into predetermined The motion vector of each unit area is determined, the motion vector of each unit area is used to compress and encode the moving image data, and the bit stream, which is the compression encoded data of the moving image data, is sent to the moving image decoding device 2 .
[0036] When the video decoding device 2 receives the bit stream transmitted from the video coding device 1 , it decodes the bit stream using the motion vectors of each unit area to restore video data (video signal) of the vid...
Embodiment approach 2
[0172]
[0173] Figure 13 is a configuration diagram showing the video encoding device 1 according to Embodiment 2 of the present invention, and in the figure, the figure 2 The same symbols denote the same or corresponding parts, so explanations are omitted.
[0174] in addition, Figure 14 is shown Figure 13 The internal configuration diagram of the motion compensation unit 71 in the moving image encoding device 1 of image 3 The same symbols denote the same or corresponding parts, so explanations are omitted.
[0175] exist Figure 13 as well as Figure 14 Among them, the motion compensator 71 executes the process of dividing a plurality of pictures constituting the moving image data into predetermined unit areas, predicting one or more predictive vectors and direct vectors of each unit area, and based on the One or more optimal motion vectors and image data of a reference image stored in the frame memory 25 are used to generate a motion-compensated predicted imag...
Embodiment approach 3
[0202] In the direct vector determination unit 34 in the video encoding device 1 according to Embodiments 1 and 2 above, it is shown that in the unit area based on the pixel position indicated by the direct vector predicted by the direct vector calculation unit 33, the area outside the screen is included. In the case of the region, the direct vector is removed from the vector to be added and averaged, but it is also possible to include the outside of the screen in the unit region based on the pixel position indicated by the direct vector predicted by the direct vector calculation unit 33. In the case of an area of , the direct vector determination unit 34 determines whether the unit area based on the pixel position indicated by the direct vector includes the outer area of the allowable range area adjacent to the screen, and if the pixel position indicated by the direct vector is used as the base point The unit area of the unit area does not include the outer area of the...
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