摘要:
A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result.
摘要:
A moving picture coding apparatus includes an inter-pixel filter having the filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filters includes filters having different filtering strength. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter.
摘要:
A decoding method according to the present invention is a method of decoding a variable length code to a Run symbol and a Level symbol. The Run symbol indicates the number of consecutive coefficients each having a value of zero. The Level symbol indicates a value of a non-zero coefficient following the Run symbol. The decoding method includes decoding a variable length code to a code number, determining whether the code number obtained in the decoding belongs to a first range or a predetermined range, decoding the code number to a Run symbol and a Level symbol by referring to a table, when it is determined that the code number belongs to the first range, and decoding the code number to a Level symbol and then decoding a variable length code following the decoded variable length code to a Run symbol, without referring to the table, when it is determined that the code number belongs to the predetermined range.
摘要:
The MPEG-4 Multiview Video Coding (MVC) standard provides the coding tools to compress images from more than one view. Traditionally, the base view of the multiple view images has to be coded by the MPEG-4 Advance Video Coding (AVC) standard. However, in some deployments, for compatibility to legacy players, MPEG-2 Video standard has to be used for the coding of the based view. This invention provides methods and apparatuses to compute the parameters required by the MVC encoder and decoder without signalling such information in the base view that is coded by the MPEG-2 video standard.
摘要:
The image coding method is used to code images to generate a coded stream. The image coding method includes: writing, into a sequence parameter set in the coded stream to be generated, a first parameter representing a first bit-depth that is a bit-depth of a reconstructed sample in the images; and writing, into the sequence parameter set, a second parameter which is different from the first parameter and represents a second bit-depth that is a bit-depth of an Intra Pulse Code Modulation (IPCM) sample in the images.
摘要:
To provide an image decoding method allowing decoding of a multiview video even when no prefix NAL units are used. The image decoding method includes: parsing NAL units of a base view; decoding an image of the base view; parsing MVC extension parameters of a non-base view; searching whether or not prefix NAL units for a base view are present; either computing MVC extension parameters for the base view when no prefix NAL units are present or parsing the MVC extension parameters of the base view when prefix NAL units for the base view are present; and decoding the non-base view using the MVC extension parameters of the base view and the MVC extension parameters of the non-base view.
摘要:
To provide an image decoding method allowing decoding of a multiview video even when no prefix NAL units are used. The image decoding method includes: parsing NAL units of a base view; decoding an image of the base view; parsing MVC extension parameters of a non-base view; searching whether or not prefix NAL units for a base view are present; either computing MVC extension parameters for the base view when no prefix NAL units are present or parsing the MVC extension parameters of the base view when prefix NAL units for the base view are present; and decoding the non-base view using the MVC extension parameters of the base view and the MVC extension parameters of the non-base view.
摘要:
A coding method includes: defining an access unit; and coding each of the pictures included in the access unit, for each access unit. The defining includes: determining a unit of coding for determining whether the pictures included in the access unit are to be uniformly coded on a per-field basis or on a per-frame basis; and determining a field type for determining whether the pictures are to be uniformly coded as top fields or bottom fields when it is determined that the pictures included in the access unit are to be coded on a per-field basis. In the coding, each of the pictures is coded for each access unit in a format determined in the determining of a unit of coding and in the determining of a field type.
摘要:
The video coding apparatus of the present invention for reducing pulsing artifacts includes: a correlation calculation unit which calculates a correlation value indicating a correlation degree of correlation between: a first block; and a second block or a third block. The first block including pixels included in a first original picture in an original picture sequence of original pictures, the second block including pixels included in a second original picture which precedes the first original picture, and the third block being obtained by coding and reconstructing the second block. The video coding apparatus includes a correlation judgment unit which judges whether the correlation value exceeds a first threshold, and judge that the correlation is high when the correlation value exceeds the first threshold; and a blending unit which blends the first block and the third block when the correlation judgment unit judges that the correlation is high.