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Encoding apparatus, encoding method

An encoding device and encoding technology are applied in the direction of TV, electrical components, pulse modulation TV signal transmission, etc., and can solve the problems of unable to obtain normal image data, unable to decode image data, etc.

Active Publication Date: 2013-04-24
SONY CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case where encoding is performed in units of frames, and when a reception error occurs in a frame, normal image data for this frame may not be obtained on the receiving side
Therefore, if the encoding method of subsequent frames is inter-frame encoding, normal image data may not be decoded
In the case where encoding is performed not in units of frames but in units of slices, although the generation unit of a reception error is in units of slices, similar to the case where encoding is performed in units of frames, as long as the number of slices of the subsequent frame in which a reception error occurs If the encoding method is inter-frame encoding, normal image data cannot be decoded

Method used

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Examples

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no. 1 example

[0032] [Structure example of encoding device]

[0033] figure 1 is a diagram showing a structural example of a first embodiment of an encoding device suitable for the present invention.

[0034] figure 1 The encoding device 21 includes an A / D conversion unit 121, a screen rearrangement buffer 122, a calculation unit 123, an orthogonal transformation unit 124, a quantization unit 125, a reversible encoding unit 126, a storage buffer 127, an inverse quantization unit 128, an inverse quadrature Transformation unit 129, addition unit 130, deblocking filter 131, frame memory 132, switch 133, intra prediction unit 134, motion prediction / compensation unit 135, selection unit 136, reception unit 137, mapping memory 138, intra macro determination section 139 and rate control section 140. The encoding means 21 encodes image data to be encoded input by the AVC system, and transmits a bit stream obtained as a result.

[0035] Specifically, the A / D conversion section 121 of the encodin...

no. 2 example

[0109] [Structure example of encoding device]

[0110] Figure 8 is a diagram showing a structural example of a second embodiment of an encoding device suitable for the present invention.

[0111] exist Figure 8 Within the structural elements shown in, the same reference numerals are appended to the figure 1 similar structural elements. Duplicate descriptions thereof will be appropriately omitted.

[0112] Figure 8 The structure of the encoding device 160 is different from figure 1 The configuration of 2 is to include a detecting unit 161 instead of the receiving unit 137 . Figure 8 The encoding device 160 determines the priority of each macroblock based on the motion vector of the image data of the frame unit to be encoded.

[0113] Specifically, the detection section 161 of the encoding device 160 functions as a priority determination section, and uses the image data of frame units to be encoded output from the screen rearrangement buffer 122, and detects a motion ...

no. 3 example

[0116] [Structure example of encoding device]

[0117] Figure 9 is a diagram showing a configuration example of a third embodiment of an encoding device suitable for the present invention.

[0118] exist Figure 9Within the structural elements shown in, the same reference numerals are assigned to the figure 1 similar structural elements. Duplicate explanations thereof will be appropriately omitted.

[0119] Figure 9 The structure of the encoding device 180 is different from figure 1 The structure of 2000 includes a new frequency calculation unit 181 and includes a map memory 182 instead of the map memory 138 . Figure 9 The encoding device 180 of [0019] statistically processes the priority of each macroblock, and calculates the frequency of macroblocks set as mandatory intra-macroblocks based on the statistically processed priority.

[0120] Specifically, the frequency calculation unit 181 of the encoding device 180 generates a histogram as statistical processing of t...

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Abstract

Provided are an encoding apparatus and an encoding method. The encoding apparatus includes an intra-block determination section which determines that a prediction mode of a block is a forced intra-prediction mode, by a frequency based on a priority of each block of an image to be encoded, an encoding section which encodes the block, to which the prediction mode has been determined to be an intra-prediction mode by the intra-block determination section, with the intra-prediction mode, and a transmission section which transmits an encoded result of the image to be encoded obtained by the encoding section, and the prediction mode of the image.

Description

technical field [0001] The present invention relates to an encoding device, an encoding method, and a program, and more particularly, to an encoding device, an encoding method, and a program capable of quickly returning to a block with a high degree of importance in a decoded image in the event of an error. Background technique [0002] AVC (Advanced Video Coding), HEVC (High Performance Video Coding), and the like are encoding systems of images. Intra coding or inter coding is the coding method of this coding system. Intra coding is coding performed using pixels within the same screen, and the coding amount of intra coding generally increases. On the other hand, inter coding is coding performed between pictures using pixels of adjacent pictures, and the coding amount of inter coding is smaller than that of intra coding. [0003] The encoding device selects an encoding method in units of frames or in units of macroblocks based on a cost function value when encoding an imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N7/64H04N19/50H04N19/107H04N19/139H04N19/147H04N19/176H04N19/19H04N19/503H04N19/51H04N19/593H04N19/60H04N19/61H04N19/65H04N19/80H04N19/82H04N19/85H04N19/89H04N19/91
CPCH04N7/26H04N19/00248H04N7/64H04N19/00145H04N19/00266H04N19/0003H04N7/32H04N19/0029H04N19/107H04N19/137H04N19/167H04N19/172H04N19/179
Inventor 宫原信祯安藤裕司冈田良平太田攻
Owner SONY CORP