Image processing
AssigneeV-Nova International Limited
InventorsIvan MAKEEV, Balázs KESZTHELYI, Stergios POULARAKIS, Michele Sanna, Robert ETTINGER
Life of this patent
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Abstract
First compressed data is decoded to obtain a representation of an image at a first level of quality which is output for display. In response to a predetermined trigger event, second compressed data is decoded to obtain reconstruction data, and the reconstruction data is used to reconstruct a representation of part of the image at a second, higher level of quality using the representation at the first level of quality. The representation of part of the image is output for display at the second level of quality.
Claims18
A method of processing image data, the method comprising:
- receiving first compressed data which, when decoded, is useable to obtain a representation of an image at a first level of quality;
- decoding the first compressed data to obtain the representation at the first level of quality;
- outputting for display the representation at the first level of quality;
- and
- in response to a predetermined trigger event:
- decoding second compressed data to obtain reconstruction data, the reconstruction data being useable to reconstruct a representation of part of the image at a second, higher level of quality using the representation at the first level of quality;
- reconstructing the representation at the second level of quality using the representation at the first level of quality and the reconstruction data;
- and
- outputting for display the representation at the second level of quality.
A method according to any of the above claims, wherein the first level of quality comprises a first image resolution and the second level of quality comprises a second, higher image resolution.
A method of processing image data, the method comprising:
- decoding, at a device, first compressed data to obtain a first representation of an image at a first level of quality;
- determining whether the first level of quality has a predetermined relationship with one or more threshold levels of quality, the one or more threshold levels of quality being based on a display characteristic associated with the device;
- in response to determining that the first level of quality has the predetermined relationship with the one or more threshold levels of quality:
- decoding second compressed data to obtain reconstruction data useable to reconstruct a second representation of the image at a second, higher level of quality using the first representation;
- reconstructing the second representation using the first representation and the obtained reconstruction data;
- and
- outputting the second representation for display at the second level of quality;
- and
- in response to determining that the first level of quality does not have the predetermined relationship with the one or more threshold levels of quality, outputting the first representation for display at the first level of quality.
A method of processing image data, the method comprising:
- receiving first compressed data which, when decoded, is useable to obtain a representation of an image at a first level of quality;
- decoding the first compressed data to obtain the representation at the first level of quality;
- causing the representation at the first level of quality to be displayed at the first level of quality;
- decoding second compressed data to obtain reconstruction data useable to enhance at least part of the displayed representation at the first level of quality to a second, higher level of quality;
- and
- using the reconstruction data to enhance said at least part of the displayed representation at the first level of quality to the second level of quality.
A method of processing image data, the method comprising:
- receiving first compressed data which, when decoded, is useable to obtain a representation of an image at a first level of quality;
- decoding the first compressed data to obtain the representation at the first level of quality;
- displaying the representation at the first level of quality;
- decoding second compressed data to obtain, for a selected target region of the image, reconstruction data useable to reconstruct a representation of the target region of the image at a second, higher level of quality using the representation at the first level of quality;
- reconstructing the representation of the target region of the image at the second level of quality using the received reconstruction data;
- and
- displaying the representation of the target region of the image at the second level of quality.
A method of processing image data, the method comprising:
- obtaining a set of reconstruction data elements useable to reconstruct a representation of an image at a first level of quality using a representation of the image at a second, lower level of quality, each reconstruction data element in the set of reconstruction data elements corresponding to an image element in the representation at the first level of quality;
- receiving an indication of a desired output size of encoded data;
- deriving, based at least on the received indication, a data rate target for encoding each of the set of reconstruction data elements;
- encoding each of the set of reconstruction data elements in accordance with the respective derived data rate target to obtain the encoded data;
- and
- outputting the encoded data.
Dependencies are inferred from the claim text.