The present disclosure pertains to an image-processing device and method that make it possible to suppress block noise. A βLUT_input calculator and a clip processor determine βLUT_input, which is a value inputted to an existing-β generator and an expanded-β generator. When the value of βLUT_input qp from the clip processor is 51 or less, the existing-β generator determines β using a LUT conforming to the HVEC standard, and supplies same to a filter process determination unit. When the value of βLUT_input qp from the clip processor is larger than 51, the expanded-β generator determines the expanded β and supplies same to the filter process determination part. This disclosure, for example, can be applied to an image processing device.

Image processing device and method

A moving picture coding method includes (i) transforming, for each of one or more second processing units included in the first processing unit, a moving picture signal in a spatial domain into a frequency domain coefficient and quantizing the frequency domain coefficient, and (ii) performing arithmetic coding on a luminance CBF flag indicating whether or not a quantized coefficient is included in the second processing unit in which transform and quantization are performed, wherein, in the arithmetic coding, a probability table for use in arithmetic coding is determined according to whether or not the size of the first processing unit is identical to the size of the second processing unit and whether or not the second processing unit has a predetermined maximum size.

Moving picture coding method, moving picture decoding method, moving picture coding apparatus, moving picture decoding apparatus, and moving picture coding and decoding apparatus

A disparity vector generation section generates disparity vectors indicating a part of a disparity between a first layer image and a second layer image different from the first layer image and different part of the disparity based on a code indicating the part of the disparity. A predicted image generation section reads a reference image of a region indicated by the disparity vector generated by the disparity vector generation section from a reference image storage section that stores the reference image and generates a predicted image based on the read reference image.

Image decoding device and image encoding device

The invention provides an image coding/recording apparatus which can solve problems of large processing loads due to the real-time re-coding and problems of complicated controls and circuits for returning processing. The image coding/recording apparatus according to an aspect of the invention codes and records image data. The image coding/recording apparatus includes: a coding unit operable to code the image data; a recording unit operable to record the coded data; and a re-coding control unit operable to (i) control said coding unit to re-code the coded data recorded by said recording unit and does not satisfy a predetermined condition, so that the re-coded data satisfies the predetermined condition, and (ii) control said recording unit to record the re-coded data, so that the re-coded data and non-re-coded data are reproduced consecutively.

Image coding/recording apparatus and image coding/recording method

An image coding method according to the present invention partitions an input image signal into processing units, and codes the partitioned image to generate a code sequence, the image coding method including: determining a partitioning pattern for hierarchically partitioning the input image signal in order starting from a largest unit of the processing units; generating partition information indicative of the partitioning pattern; and coding partition information, wherein the partition information includes maximum used hierarchy depth information indicative of a maximum used hierarchy depth which is a hierarchy depth of a deepest processing unit of the processing units included in the partitioning pattern.

Image coding method, image decoding method, image coding device, and image decoding device

PROBLEM TO BE SOLVED: To provide an image encoding apparatus capable of restraining operations from increasing in amount, selecting an efficient composition, and encoding an image. SOLUTION: The image encoding apparatus is equipped with a referred frame determinating unit 11 which determines whether the frame of input image data on moving images as an object of encoding is encoded as a referred frame or not, a field/frame determination unit 13 that determines which is optimal, a field composition or a frame composition, comparing a field unit activity with a frame unit activity, wherein both activities are calculated by an activity calculation unit 12, and an encoding unit 14 that encodes a frame which is determined to be a referred frame by the referred frame determination unit 11 by an optimal composition received from the field/frame determination unit 13 and encodes the other frame which is not determined to be a referred frame by the referred frame determination unit 11 as a frame composition always. COPYRIGHT: (C)2008,JPO&INPIT

Image encoding apparatus

PROBLEM TO BE SOLVED: To detect and correct a syntax error of encoded data. SOLUTION: A syntax detection section 100 outputs, as syntax error detection information, at least one or more of the presence information of a syntax error, first position information indicative of a position where the syntax error is present, first range information indicative of a range in which the syntax error is present, and first class information indicative of an encoding type at the position where the syntax error is present. A replacement information generating section 200 selects one or more prepared replacement code streams based on the syntax error detection information and generates replacement information adding the replacement code streams to second position information indicative of a position to be replaced in the encoded data and second range information indicative of a range to be replaced in the encoded data, created based on the replacement code streams and the syntax error detection information, and a replacement section 300 replaces the encoded data with syntax error corrected encoded data based on the replacement information. COPYRIGHT: (C)2007,JPO&INPIT

Error correction apparatus

PROBLEM TO BE SOLVED: To improve encoding efficiency of motion information while suppressing a load for processing the motion information.SOLUTION: When a reference picture index of a block to be decoded differs from the reference picture index included in encoding information of plural reference blocks adjacent to the block to be decoded, a scaling process can be executed to associate a movement vector included in the encoding information of the reference blocks with the picture interval distance between a picture to be decoded in which the block to be decoded is included and a reference picture that is identified on the basis of an index of the reference picture of the block to be decoded. An upper limit is set for the number of times of the scaling process in deriving the encoding information when a reference candidate list is generated for a block to be decoded.

Image-decoding device, method for image decoding, and image-decoding program

In a picture coding device that partitions difference information that is a transform coefficient of a difference signal between a coding target picture and a prediction picture into a plurality of partial regions, and codes difference coefficients in units of partial regions, a significant coefficient information coding controller 706 and an arithmetic encoder 701 code significant difference coefficient information indicating that a difference coefficient value is not zero and significant for each of the difference coefficients in the partial region of the coding target. A difference coefficient value coding controller 707 and the arithmetic encoder 701 code difference coefficient values when significant difference coefficient information is significant for each of pixels in the partial region of the coding target. The significant coefficient information coding controller 706 decides a context for coding the significant difference coefficient information in the partial region of the coding target based on information indicating significance of the difference coefficient in the coded partial region.

Image coding device, image coding method, and image coding program

PROBLEM TO BE SOLVED: To provide a picture signal encoding apparatus in which picture quality of a moving image is equalized as well as the processing amount is significantly reduced in comparison with a conventional apparatus. SOLUTION: The moving image encoding apparatus extracts character information of the moving image in encoding an input moving image, and determines a GOP structure based thereon. The apparatus determines a first encoding parameter based on the character information of the moving image and the GOP structure, and calculates encoding complexity for each picture using the character information of the moving image and the GOP structure and the first encoding parameter (a first encoding section 20). Then, the apparatus stores the first encoding parameter and the encoding complexity in a recording medium 30. Next, the apparatus determines a second encoding parameter using the first encoding parameter and the encoding complexity stored in the recording medium 30 in encoding the input moving image of the same content as a previous image again, and encodes the input moving image using the second encoding parameter (a second encoding section 40). COPYRIGHT: (C)2008,JPO&INPIT

Takehara Hideki

Papers

Image encoding apparatus

Error correction apparatus

Image-decoding device, method for image decoding, and image-decoding program

Image coding device, image coding method, and image coding program

Moving image encoding apparatus