Method for recombining image file
A technology of image files and header files, which is applied in electrical components, image communication, digital video signal modification, etc. It can solve problems such as inconvenient use, inability to decompress 8K resolution image content, and abnormal display of images, etc.
Inactive Publication Date: 2018-10-16
MSTAR SEMICON INC
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Problems solved by technology
However, due to the limitations of hardware devices, older hardware devices are often unable to play new high-quality images
For example, the internal decompression unit of a display that only supports 4K resolution may not be able to decompress 8K resolution video content, so it cannot display 8K resolution video content
In other words, when the image specification is incompatible with the hardware device, the image may not be displayed normally, causing inconvenience in use
Method used
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[0026] figure 1 It is a schematic diagram of an image reconstruction system 100 according to an embodiment of the present invention. The image reconstruction system 100 includes a host terminal 110 , an image reconstruction unit 120 and a display terminal 130 . In some embodiments of the present invention, the image file F0 provided by the host terminal 110 may have a resolution of 8K, and the display terminal 130 includes a display 132 with a resolution of 4K and a corresponding decompression unit 134 . Since the resolution of the image file F0 exceeds the upper limit that the display terminal 130 can handle, when the display terminal 130 directly receives the image file F0, the decompression unit 134 of the display terminal 130 cannot perform the corresponding decompression function. However, the image reconstruction unit 120 may reconstruct the image file F0 into an image file F1 with a lower resolution, such as 4K resolution. In this way, the decompression unit 134 of th...
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The invention discloses a method for recombining an image file. A to-be-recombined image file comprises coding data of a plurality of images coded according to a high efficiency video coding standard.Each image comprises a plurality of image tiles. The coding data of each image comprises a plurality of data slices and a plurality of parameters sets. The method for recombining the image file comprises the steps of receiving the to-be-recombined image file; analyzing the plurality of parameters sets in the to-be-recombined image file; taking out a plurality of pieces of interest image data corresponding to regions of interest of each image from the data slices according to the parameters sets; updating the parameters sets to obtain a plurality of updated parameters sets; and generating a recombined image file according to the interest image data and the updated parameter sets. The plurality of image tiles of each image belong to a motion-constrained tile set defined by the high efficiency video coding standard.
Description
technical field [0001] The invention relates to a method for reorganizing video files, in particular to a method for recombining video files based on high-efficiency video coding. Background technique [0002] As consumers have increasingly higher requirements for image quality, video producers are also committed to producing higher-quality video content. However, high-quality images often contain huge amounts of data. Therefore, in order to facilitate the transmission and storage of image content, various image compression methods have also emerged accordingly. For example, the High Efficiency Video Coding (HEVC) standard released in January 2013. In high-efficiency video coding standards, each image in an image can be divided into multiple image blocks (tiles), and each area in each image block can be calculated according to the motion vector obtained during compression encoding The area corresponding to the previous image in time sequence is decompressed according to th...
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IPC IPC(8): H04N19/174H04N19/176H04N19/167
CPCH04N19/167H04N19/174H04N19/176
Inventor 王颂文
Owner MSTAR SEMICON INC