Patent ID: 8411973
Filing Date: 2013-04-02
Classification: H04N

Abstract:
1. An image file processing method, comprising: obtaining an image file of an image, wherein the image is divided into a plurality of image blocks, at least one of the image blocks is regarded as a minimum coded unit (MCU), one row or multiple rows of the MCUs sequentially defines the image into a plurality of bands, wherein the image file comprises: reading at least one of the band indicators and the MCU indicator according to an expanded range for selecting part of the image; obtaining a referential DC coefficient according to the hybrid DC coefficient corresponding to the first MCU covered by the expanded range; and decoding at least one sub-clip corresponding to at least one MCU covered by the expanded range in the bit stream according to the read band indicator, the MCU indicator and the referential DC coefficient, so as to obtain at least one of the MCU.