PERFORMING TRANSFORM DURING PROCESSING OF AN IMAGE

摘要

An image decoder performs a 2D transforms as a series of 1D transforms. The processor is operable to store a column of values in a memory as a row of values, combine the values within the stored row to generate a column of the resulting values, and store the resulting values in the memory as a row of resulting values. Such an image decoder can store values in a memory register such that when the processor combines these values to generate intermediate IDCT values, it stores these intermediate IDCT values in a transposed fashion (12).