Method of adaptive structure-driven compression for image transmission over ultra-low bandwidth data links
AssigneeUtopiaCompression Corporation
InventorsJacob Yadegar, Hai Wei, Joseph Yadegar, Karthik M. Varadarajana, Sakina Zabuawala
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Abstract
The communications system comprises an encoder for encoding an input image. The salient features of the image prioritized and encoded accordingly. A low bandwidth media for transmitting the encoded input image is used. A decoder is coupled to the encoder for receiving encoded information. The decoder is non-symmetrical to the encoder for decoding merely a part of the encoded input image with improved subjective/perception quality. Whereby a human operator can reach a determination via visual inspection regarding the input image.
Claims19
An encoding method comprising the steps of:
- detecting a structure information from an input image data;
- linking the structure information;
- profiling the structure information;
- prioritizing the structure information;
- modeling the structure information using a discrete cosine transform (DCT) coupled with an inter-chain differential pulse code modulation(DPCM);
- and
- encoding the structure information including a geometric average as to which edge chains to encode;
- wherein both edge geometry and intensity parameters are reorganized into at least two sequences;
- wherein structure information including a set of edge chains is used for encoding.
A decoding method comprising the steps of:
- receiving a structure information via a low bandwidth communication channel;
- decompressing the structure information associated with a structure geometry by applying inter-structure chain predictive decoding and inner-structure chain predictive decoding;
- decompressing the structure information associated with a structure intensity by applying inter-chain predictive decoding of DC (direct current) value of each structure chain intensity sequence and inner-chain inverse 1D discrete cosine transform and de-quantization to recover each of the structure chain intensity sequence;
- and
- reconstructing an image associated with the structure information.
An encode-decode system having an encoder, and a decoder, the encoder having an encoding method and decoder having a decoding method, the encoding method comprising the steps of:
- detecting a structure information from an input image data;
- linking the structure information;
- profiling the structure information;
- prioritizing the structure information;
- modeling the structure information using a discrete cosine transform (DCT) coupled with an inter-chain differential pulse code modulation(DPCM);
- and
- encoding the structure information including a geometric average as to which edge chains to encode;
- wherein both edge geometry and intensity parameters are reorganized into at least two sequences;
- and
- wherein structure information including a set of edge chains is used for encoding;
- the decoding method comprising the steps of:
- receiving a structure information via a low bandwidth communication channel;
- decompressing the structure information associated with a structure geometry;
- decompressing the structure information associated with a structure intensity;
- and
- reconstructing an image associated with the structure information.
Dependencies are inferred from the claim text.