Image processing device and image processing method
AssigneeSony Corporation
InventorMasaru Ikeda
Life of this patent
Estimating the term…
Abstract
The present technology relates to an image processing device and an image processing method which allow a deblocking filtering process to apply filtering appropriately. A pixel (p0i) of which the value is 255 (solid line) before a deblocking process changes greatly to 159 (dot line) after a conventional deblocking process. Therefore, a clipping process having a clipping value of 10 is performed in strong filtering, whereby the pixel (p0i) of which the value is 255 (solid line) before the deblocking process becomes 245 (bold line). Thus, a change in the pixel value occurring in the conventional technique can be suppressed as much as possible. This disclosure can be applied to an image processing device, for example.
Claims20
An image processing device comprising:
- a decoding unit that decodes an encoded stream encoded in units each having a layer structure to generate an image;
- a filtering unit that applies a deblocking filter to a block boundary according to a strength of the deblocking filter applied to the block boundary which is a boundary between a block of the image generated by the decoding unit and an adjacent block adjacent to the block;
- and
- a controller that controls the filtering unit so that, when strong filtering is applied as the strength of the deblocking filter, a clipping process is applied to the deblocking filter with respect to luminance components of the image generated by the decoding unit.
An image processing method for allowing an image processing device to execute:
- decoding an encoded stream encoded in units each having a layer structure to generate an image;
- applying a deblocking filter to a block boundary according to a strength of the deblocking filter applied to the block boundary which is a boundary between a block of the generated image and an adjacent block adjacent to the block;
- and
- controlling so that, when strong filtering is applied as the strength of the deblocking filter, a clipping process is applied to the deblocking filter with respect to luminance components of the generated image.
An image processing device comprising:
- a filtering unit that applies a deblocking filter to a block boundary according to a strength of the deblocking filter applied to the block boundary which is a boundary between a block of an image locally decoded when an image is encoded and an adjacent block adjacent to the block;
- a controller that controls the filtering unit so that, when strong filtering is applied as the strength of the deblocking filter, a clipping process is applied to the deblocking filter with respect to luminance components of the locally decoded image;
- and
- an encoding unit that encodes the image in units each having a layer structure using an image to which the deblocking filter is applied.
An image processing method for allowing an image processing device to execute:
- applying a deblocking filter to a block boundary according to a strength of the deblocking filter applied to the block boundary which is a boundary between a block of an image locally decoded when an image is encoded and an adjacent block adjacent to the block;
- controlling so that, when strong filtering is applied as the strength of the deblocking filter, a clipping process is applied to the deblocking filter with respect to luminance components of the locally decoded image;
- and
- encoding the image in units each having a layer structure using an image to which the deblocking filter is applied.
Dependencies are inferred from the claim text.