Abstract:
현재 픽처를 최대 부호화 단위로 분할하고, 심도별 부호화 단위에 기반하여 최대 부호화 단위의 영상 데이터를 부호화하여 최대 부호화 단위의 분할 형태 및 분할된 각 부호화 단위의 예측 모드와 축소를 결정하며, 각 부호화 단위마다 축소 정보 및 스킵 모드 정보 및 각 부호화 단위가 포함되는 하위 심도의 부호화 단위의 분할 여부를 포함하는 축소 정보를 설정하고, 각 부호화 단위마다 설정된 축소 정보 및 스킵 정보를 부호화하는 영상 부호화 방법 및 장치, 그 복호화 방법 및 장치가 개시된다.
Abstract:
In an image processing method and an image processing apparatus, projection and back-projection methods are provided. The projection and back-projection methods include the steps of: projecting the center of a detector cell included in a detection unit on a common axis; mapping a boundary of pixels of a pixel grid with the common axis; projecting the center of the detector cell included in the detection unit on a preset common axis; and determining a pixel value based on the step of mapping the boundary of the pixel on the preset common axis.
Abstract:
Disclosed are an image encoding method and apparatus for encoding an image by grouping a plurality of adjacent prediction units into a transformation unit and an image decoding method and apparatus for decoding an image encoded by using the image encoding method and apparatus. According to an embodiment of the present invention, an image decoding apparatus includes an entropy decoder for entropy-decoding frequency component coefficients that are generated by being transformed to a frequency domain; an inverse-quantization unit for inverse-quantizing the frequency component coefficients; and an inverse-transformer for inverse-transforming the frequency component coefficients into a pixel domain, and reconstructing a plurality of adjacent prediction units comprised in the transformation unit.