Abstract: In encoding an image, a transform skip flag that is flag information indicating, for each component, whether or not to skip transform processing of transforming a residual between an image and a predicted image of the image into coefficient data is generated, the transform skip flag generated is encoded, coded data of the transform skip flag is generated, and a bit stream including the generated coded data of the transform skip flag is generated. The present encoding/decoding can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission-reception device, an information processing device, an imaging device, a reproduction device, a bit stream generation method, a coefficient data generation method, a quantization coefficient generation method, or the like.

Abstract: There is provided an image processing apparatus and an image processing method for enabling suppression of an increase in a memory capacity required for orthogonal transform and inverse orthogonal transform. A second transformation matrix is derived using a first transformation matrix, a prediction residual of an image is orthogonally transformed using the derived second transformation matrix, and coefficient data obtained by orthogonally transforming the prediction residual is encoded to generate a bit stream. The present disclosure can be applied to, for example, an image processing apparatus, an image encoding device, an image decoding device, or the like.

Abstract: The present disclosure relates to an image processing device and method that allow reduction in coding efficiency to be suppressed. A pixel value of a chroma component is predicted by linear prediction from a pixel value of a reference image of a luma component whose pixel location is changed by using a filter, and a prediction image of the chroma component is generated. A chroma component of encoded data in which an image is encoded is decoded by using the generated prediction image. The filter is selected on a basis of information regarding a pixel location of the chroma component and information regarding a color format. The present disclosure is applicable, for example, to an image processing device, an image encoding device, an image decoding device, or the like.

Abstract: Inverse quantization is performed on a quantization coefficient using a quantization parameter depending on whether a transform skip is to be applied, inverse coefficient transformation is performed on a transform coefficient generated by inverse quantization to generate a predicted residual that is a residual between an image and a predicted image of the image when the transform skip is not to be applied, and the inverse coefficient transformation is skipped when the transform skip is to be applied. This can be applied to, for example, an image processing device, an image coding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic apparatus, an image processing method, an information processing method, or the like.

Abstract: There is provided an image processing apparatus and an image processing method for enabling suppression of an increase in a memory capacity required for orthogonal transform and inverse orthogonal transform. A second transformation matrix is derived using a first transformation matrix, a prediction residual of an image is orthogonally transformed using the derived second transformation matrix, and coefficient data obtained by orthogonally transforming the prediction residual is encoded to generate a bit stream. The present disclosure can be applied to, for example, an image processing apparatus, an image encoding device, an image decoding device, or the like.

Abstract: The present disclosure relates to an image processing device and method for enabling suppression of an increase in encoding load. An encoding mode of encoding of an image is set by setting a transform type with a minimum encoding cost in a non-joint chrominance encoding mode as a transform type in a joint chrominance encoding mode, and deriving an encoding cost in the joint chrominance encoding mode. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an information processing device, an electronic device, an image processing method, an information processing method, or the like.

Abstract: There is provided an image processing apparatus and method that make it possible to suppress degradation of the encoding efficiency. In the case where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, also secondary transform, which is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, is skipped. The present disclosure can be applied, for example, to an image processing apparatus, an image encoding apparatus, an image decoding apparatus and so forth.

Abstract: The present disclosure relates to an information processing device and method capable of curbing an increase in the load of coding processing/decoding processing. A fixed context variable is set for a first bin of a bin string of secondary transform control information, which is control information about secondary transformation, and each bin of the secondary transform control information is arithmetically coded with reference to the set fixed context variable. The present disclosure can be applied to, for example, an image processing device, an image coding device, an image decoding device, a transmitting device, a receiving device, a transmitting/receiving device, an information processing device, an imaging device, a reproduction device, an electronic apparatus, an image processing method, an information processing method, and the like.

Abstract: In encoding an image, a transform skip flag that is flag information indicating, for each component, whether or not to skip transform processing of transforming a residual between an image and a predicted image of the image into coefficient data is generated, the transform skip flag generated is encoded, coded data of the transform skip flag is generated, and a bit stream including the generated coded data of the transform skip flag is generated. The present encoding/decoding can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission-reception device, an information processing device, an imaging device, a reproduction device, a bit stream generation method, a coefficient data generation method, a quantization coefficient generation method, or the like.

Abstract: A predetermined context variable is assigned, according to a device, system, or method, to a first bin of a bin sequence obtained by binarizing an adaptive orthogonal transform identifier indicating a mode of adaptive orthogonal transform in image encoding and context encoding is performed for the first bin of the bin sequence. Furthermore, a predetermined context variable is assigned to a first bin of a bin sequence obtained by binarizing an adaptive orthogonal transform identifier indicating a mode of inverse adaptive orthogonal transform in image decoding and context decoding is performed for the first bin of the bin sequence.

Abstract: An image processing device is provided. The image processing device includes a decoding unit that decodes scaling list data to generate a first quantizing matrix of a first size, a generating unit that generates a second quantizing matrix for a transform block of a second size to which zeroing of a high-frequency component is applied, by referring to only a partial matrix of the first quantizing matrix generated by the decoding unit, and an inverse quantizing unit that inversely quantizes a quantized transform coefficient of the transform block of the second size, using the second quantizing matrix generated by the generating unit.

Abstract: The present disclosure relates to an image processing device and method for enabling control of a value of a quantization parameter within a desired range. A quantization parameter is corrected on the basis of a parameter regarding adaptive color transform and further correcting the quantization parameter on the basis of a parameter regarding transform skip, and coefficient data of an image to be encoded is quantized using a corrected quantization parameter that is the quantization parameter that has been corrected. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic device, an image processing method, an information processing method, or the like.

Abstract: The present disclosure relates to an image processing device and method that enable the use of an encoding tool for bit-depth extension while maintaining compatibility with a specification that does not extend a bit depth of an image. An operation-range extension flag is encoded in accordance with a bit depth of an image, and operation-range extension tool control information is encoded in accordance with the operation-range extension flag. Alternatively, the operation-range extension flag is encoded, and the operation-range extension tool control information is encoded in accordance with a bit depth of an image. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic device, an image processing method, an information processing method, and the like.

Abstract: The present disclosure relates to an image processing device and method that allow reduction in coding efficiency to be suppressed. A pixel value of a chroma component is predicted by linear prediction from a pixel value of a reference image of a luma component whose pixel location is changed by using a filter, and a prediction image of the chroma component is generated. A chroma component of encoded data in which an image is encoded is decoded by using the generated prediction image. The filter is selected on a basis of information regarding a pixel location of the chroma component and information regarding a color format. The present disclosure is applicable, for example, to an image processing device, an image encoding device, an image decoding device, or the like.

Abstract: The present disclosure relates to an image processing device and method for enabling suppression of reduction in encoding efficiency. Encoding of secondary transform control information that is control information related to secondary transform is omitted in a case where a transform skip flag of at least one component among valid components in image encoding is true, and the secondary transform control information is encoded in a case where the transform skip flags of all the components among the valid components in image encoding are false. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic device, an image processing method, an information processing method, or the like.

Abstract: Memory required during decoding is reduced. A video image decoding device (1) is equipped with main direction deriving means (1453A) that references a prediction mode definition DEFPM(1), and from a prediction mode number, derives a main direction of a prediction direction corresponding to a prediction mode, and a gradient deriver (1453B) that references a gradient definition table DEFANG(1), and derives a gradient of the prediction direction.

Abstract: Inverse quantization is performed on a quantization coefficient using a quantization parameter depending on whether a transform skip is to be applied, inverse coefficient transformation is performed on a transform coefficient generated by inverse quantization to generate a predicted residual that is a residual between an image and a predicted image of the image when the transform skip is not to be applied, and the inverse coefficient transformation is skipped when the transform skip is to be applied. This can be applied to, for example, an image processing device, an image coding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic apparatus, an image processing method, an information processing method, or the like.

Abstract: An image processing apparatus including circuitry configured to skip, where primary transform that is a transform process for a prediction residual that is a difference between an image and a prediction image of the image is to be skipped, encoding of first information relating to skip of secondary transform that is a transform process for a primary transform coefficient obtained by the primary transform of the prediction residual, and skip encoding of inverse primary transform skip information relating to skip of an inverse primary transform based on a size in a horizontal direction and a size in a vertical direction of a transform block of the inverse primary transform.

Abstract: The present disclosure relates to an image processing device and method for enabling suppression of an increase in encoding load. An encoding mode of encoding of an image is set by setting a transform type with a minimum encoding cost in a non-joint chrominance encoding mode as a transform type in a joint chrominance encoding mode, and deriving an encoding cost in the joint chrominance encoding mode. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an information processing device, an electronic device, an image processing method, an information processing method, or the like.

Abstract: The present disclosure relates to an image processing device and method for enabling control of a value of a quantization parameter within a desired range. A quantization parameter is corrected on the basis of a parameter regarding adaptive color transform and further correcting the quantization parameter on the basis of a parameter regarding transform skip, and coefficient data of an image to be encoded is quantized using a corrected quantization parameter that is the quantization parameter that has been corrected. The present disclosure can be applied to, for example, an image processing device, an image encoding device, an image decoding device, a transmission device, a reception device, a transmission/reception device, an information processing device, an imaging device, a reproduction device, an electronic device, an image processing method, an information processing method, or the like.