Altek Corporation

Kuo-Chun Hung

Shuei-Lin Chen

Po-Jung Lin

Chia-Ho Pan

Yen-Ping Teng

An processing method is used for processing an image file of an image, in which the image is divided into a plurality of image blocks, and at least one row of the minimum coded units sequentially define the image as a plurality of bands. The processing method includes the following steps. An image file of an image is supplied, in which the image file includes a bit stream and exchangeable image file (EXIF) data. A band indicator of the EXIF data is read according to an expanded range. A segment in the bit stream corresponding to a band encompassed by the expanded range is decoded according to the read band indicator corresponding to the band of the expanded range, so as to obtain the band.

Image file processing method

A processing method for image file includes the following steps. An image file of an image is obtained, in which the image file includes a bit stream and an Exchangeable Image File (EXIF) data. A band indicator and a minimum coded unit (MCU) indicator are read according to an expanded range. A referential DC coefficient is obtained according to a hybrid direct current (DC) coefficient corresponding to a first MCU covered by the expanded range. A sub-clip of the MCU covered by the corresponding expanded range in the bit stream is decoded according to the read band indicator, the MCU indicator and the referential DC coefficient, so as to obtain at least one MCU.

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Hsinchu, Taiwan

Kuo-Chun Hung