Video encoding and decoding methods and apparatuses for padding area of image
AssigneeSamsung Electronics Co., Ltd.
InventorsKi-won Yoo, Jae-moon Kim, Sang-kwon Na
Life of this patent
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Abstract
Provided is a video encoding method including: performing padding outside an input image such that a size of the input image is a multiple of a maximum coding unit; when a current maximum coding unit includes a padding area generated via the padding, determining a coding unit by splitting the current maximum coding unit by using a boundary of the input image and the padding area; determining information indicating whether a coding unit included in the padding area includes a nonzero coefficient to be 0; and encoding a bitstream including the determined information.
Claims15
A video encoding method comprising:
- performing padding outside an input image, wherein a size of the input image after the padding is performed is a multiple of a maximum coding unit;
- when a current maximum coding unit comprises a padding area generated via the padding, splitting the current maximum coding unit into at least a coding unit by using a boundary between the input image and the padding area;
- assigning a value of 0 to a flag that indicates whether the coding unit included in the padding area has a nonzero coefficient;
- and
- encoding a bitstream comprising the flag.
A video decoding method comprising:
- obtaining image data and encoding information of a maximum coding unit comprising a padding area, from a received bitstream, the maximum coding unit having been split into at least a coding unit by using a boundary between an input image and the padding area;
- generating a restored image based on the image data and the encoding information of the maximum coding unit;
- and
- excluding the padding area from the restored image,
- wherein the encoding information includes a flag, which indicates whether the coding unit included in the padding area of the maximum coding unit has a nonzero coefficient, having a value of 0.
A video decoding apparatus comprising:
- a decoder configured to obtain image data and encoding information of a maximum coding unit comprising a padding area, from a received bitstream, the maximum coding unit having been split into at least a coding unit by using a boundary between an input image and the padding area;
- a restored image generator configured to generate a restored image based on the image data and the encoding information of the maximum coding unit;
- and
- an image reproducer configured to exclude the padding area from the restored image,
- wherein the encoding information includes a flag, which indicates whether the coding unit included in the padding area of the maximum coding unit has a nonzero coefficient, having a value of 0.
Dependencies are inferred from the claim text.