Method and apparatus for encoding/decoding image
A technology of a decoding method and an encoding method, which is applied in the field of image encoding/decoding methods and devices, can solve the problem that the channel is difficult to fully satisfy the amount of multimedia data, and achieve the effect of improving the performance of arithmetic encoding and arithmetic decoding, and improving encoding efficiency
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Embodiment 1
[0165] Figure 7 It is a schematic diagram for explaining an embodiment of intra-picture prediction using multiple reference pixel rows.
[0166] exist Figure 7 In the example shown, the size of the current coding target block is 4×4, and the intra-picture prediction mode is the upper-right diagonal direction mode.
[0167] Figure 8 is a schematic diagram for explaining another embodiment of intra-picture prediction using a plurality of reference pixel rows.
[0168] Figure 9 It is an exemplary diagram illustrating an intra prediction unit of a video encoding device using one or more reference pixel rows.
[0169] Next, see Figure 7 as well as Figure 8 right Figure 9 The intra-picture prediction unit in . When intra prediction is selected as the prediction mode of the current block, reference pixel generation and filtering are performed for each reference pixel row in the reference pixel generation unit 901 . The reference pixel generator 901 can perform the sam...
Embodiment 2
[0185] Figure 13 It is a schematic diagram for explaining an intra prediction unit of a video encoding device according to another embodiment of the present invention.
[0186] When intra-prediction is selected as the prediction mode of the current block, the method of generating the predicted block will also change depending on whether the intra-prediction mode is transmitted or not. The intra-screen prediction information may be information indicating whether to transmit the intra-screen prediction mode from the encoding device to the decoding device.
[0187]In the case of transmitting the intra-picture prediction mode, the reference pixel generation unit 1303, the virtual reference pixel generation determination unit 1304, the reference pixel row combination determination unit 1305, and the intra-picture prediction mode determination unit 1306 can be selected after the mode encoding unit 1301 is selected. Generate prediction blocks. The reference pixel generation unit 1...
Embodiment 3
[0200] Figure 17 is a schematic diagram for explaining a method for performing intra-picture prediction according to another embodiment of the present invention.
[0201] exist Figure 17 In the example shown, the size of the coding target block is 4×4, and the intra prediction mode is the top-right direction mode.
[0202] Figure 18 It is a schematic diagram for explaining an intra prediction unit of a video encoding device according to another embodiment of the present invention.
[0203] Figure 18 The intra-picture prediction part in can use unidirectional or bidirectional prediction mode to generate prediction blocks.
[0204] Figure 18 The bi-directional prediction and intra-frame prediction mode determination unit 1804 in the embodiment is in Figure 9 On the basis of the intra-picture prediction mode determination unit 904 in the embodiment, bi-directional prediction is added, and Figure 18 Other constitutions of the embodiment in and Figure 9 The examples...
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