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Motion picture coding apparatus and motion picture coding method
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of moving images, coding equipment, applied in the direction of image communication, television, electrical components, etc.
Active Publication Date: 2013-01-30
FUJITSU LTD
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Abstract
Description
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Also about P-pictures and B-pictures, since "intra prediction" can be performed, the same problem can arise
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Embodiment 1
[0056]
[0057] Figure 6 is a block diagram describing one example of the configuration of the moving image encoding device 100 according to Embodiment 1 of the present invention. exist Figure 6 The moving image encoding device 100 described in includes a prediction error signal generation unit 101, an orthogonal transformation unit 102, a quantization / coefficient cutting unit 103, an entropy encoding unit 104, an inverse quantization unit 105, an inverse orthogonal transformation unit 106, a decoded image generation unit 107 . The decoded image storage unit 108 , the mode determination unit 109 , the boundary determination unit 110 , the position determination unit 111 , the change unit 112 and the prediction signal generation unit 113 . The function of each part will be described below.
[0058] The prediction error signal generation section 101 divides a picture to be encoded in input image data into 16×16 pixel blocks (macroblocks), and obtains blocks to be encoded. ...
Embodiment 2
[0169] Next, a moving image encoding device 300 according to Embodiment 2 of the present invention will be described. According to Embodiment 2, when the encoding mode to be used is determined, in the case where the block to be encoded is below a certain boundary, it is determined to use an encoding mode other than the encoding mode of each block separated into the DC component and the AC component.
[0170]
[0171] Figure 16 is a block diagram describing one example of the configuration of the moving image encoding device 300 according to Embodiment 2. exist Figure 16 In the configuration, to and in the Figure 6 The same or similar parts as those described in are provided with the same reference numerals, and repeated explanations thereof will be omitted.
[0172] The mode determination section 301 determines the target image to be encoded based on block data of the block to be encoded, picture information indicating whether the block to be encoded is an I picture, a...
Embodiment 3
[0191] Figure 19 is a block diagram describing one example of the configuration of the image processing apparatus 400 . The image processing device 400 is one example of the moving image encoding device described above as each embodiment. Such as Figure 19 As described in , the image processing apparatus 400 includes a control unit 401 , a main storage unit 402 , an auxiliary storage unit 403 , a drive unit 404 , a network I / F unit 406 , an input unit 407 and a display unit 408 . The respective sections and units are connected to each other through the bus 410 so that they can mutually perform data transmission and reception.
[0192] The control section 401 is a central processing unit (CPU) in a computer for performing control of various parts and units, and performing logical and / or arithmetic operations on data or modifying data. In addition, the control section 401 is an arithmetic and logic operation unit that executes a moving picture coding program stored in the m...
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Abstract
The invention relates to a motion picture coding apparatus and a motion picture coding method. The motion picture coding apparatus divides an image into plural blocks and codes the image; determines a coding mode to be used for each of the blocks; determines, for coefficients of each of the plural blocks coded in the determined coding mode, a position for which coefficients in the block are replaced by "0" based on rate information; determines whether a to-be-processed block is a first block for which referring to pixel values of an upward adjacent block is not allowed; changes, for coefficients of a block of DC components after orthogonal transformation or quantization in the block determined as the first block, the determined position to a position at which the number of coefficients to be replaced by "0" is reduced; and replaces coefficients of the block of DC components after orthogonal transformation or quantization in the block determined as the first block based on the changed position.
Description
technical field [0001] The embodiments described herein relate to a moving picture encoding device and a moving picture encoding method. Background technique [0002] In general, image data, especially moving image data, has a large data volume. Therefore, moving image encoding is performed in advance when image data is transmitted from the transmitting device to the receiving device, or when image data is stored in the storage unit. "Moving image encoding" means an encoding process for converting a specific data sequence into another data sequence, and means a process of compressing a data amount. As a typical moving image encoding method, H.264 / AVC (ITU-T H.264 / ISO / IECMPEG-4AVC) can be cited. [0003] A moving image signal has a luminance signal and a color differencesignal. For example, moving image coding is performed on a YUV (YCbCr) signal. There are color formats that depend on the amount of information of the color-difference signal relative to the luminance sig...
Claims
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Application Information
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