Electronic device and method for splitting image

摘要

In a method for splitting an image for encoding purposes, a largest coding unit (LCU) of the image is obtained, the LCU divided into a plurality of 2N×2N blocks, the 2N×2N blocks examined sequentially, and a determination made as to whether or not the current 2N×2N block needs to be split according to a pixel variance of the current 2N×2N block. The method further determines whether a block merging operation needs to be executed for the LCUs according to an average value of pixels of each of the 2N×2N blocks if the current 2N×2N block does not need to be split.

主权项

1. A method for splitting an image using an electronic device, the method comprising:
obtaining a largest coding unit (LCU) of the image, and dividing the LCU into a plurality of 2N×2N blocks; calculating a pixel variance and an average value of pixels of each of the 2N×2N blocks; obtaining a current 2N×2N block from the LCU according to a recursive order, determining whether the current 2N×2N block needs to be split according to the pixel variance of the current 2N×2N block; splitting the current 2N×2N block into four N×N blocks upon the condition that the current 2N×2N block needs to be split; and determining, using a processor, to whether a block merging operation needs to be executed for the LCU according to the average value of pixels of each of the 2N×2N blocks upon the condition that the current 2N×2N block does not need to be split, and executing the block merging operation when the block merging operation is needed.