| 摘要 |
A video processing apparatus and method are provided, the video processing apparatus comprising first stage video processing circuitry and second stage video processing circuitry. The first stage video processing circuitry receives input video data and performs one or more processing operations on the input video data to generate an intermediate representation of the input video data. The intermediate representation comprises first and second separate data portions, with the first data portion containing transient data derived from the input video data and the second data portion containing long term data derived from the input video data. Transient data is only required for processing of a single video frame, whilst the long term data is required for processing of at least two video frames. The first stage video processing circuitry is arranged to output the first and second separate data portions for storing in a buffer, and the second stage video processing circuitry then retrieves the first and second data portions from the buffer and performs one or more further processing operations on those data portions in order to generate output video data. The transient data is compressed prior to being stored in the buffer, and then decompressed when retrieved from the buffer by the second stage video processing circuitry. Such an approach enables the operations of the second stage video processing circuitry to be decoupled from the operations of the first stage video processing circuitry, whilst reducing the storage capacity requirements of the buffer. |
