Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clusters
June 1, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProgressive image transmission Method of restoring a picture cell by estimation with high density Method of restoring a picture cell by estimation with high density Picture data compressing method Picture transfer method and apparatus therefor Progressive transmission of high resolution two-tone facsimile images Edge decomposition for the transmission of high resolution facsimile images Patent #: 4873577 InventorsAssigneeApplicationNo. 359910 filed on 06/01/1989US Classes:358/426.11, Coded image communication rate358/426.12, Auxiliary information transmitted (e.g., required to perform or identify decoding technique)358/447, Signal enhancing375/240.25, Specific decompression process382/238Predictive codingExaminersPrimary: Orsino, Joseph A.Assistant: Lee, Thomas C. Attorney, Agent or FirmInternational ClassH04N 001/415AbstractMore efficent encoding/decoding in decomposing and recomposing a high resolution image is obtained by employing a unique pixel cluster arrangement. The pixel clusters of an image are classified as one of a plurality of classifications. A unique encoding/decoding technique is assigned to each classification. In one embodiment, a cluster including at least one high resolution pixel to be recomposed from a corresponding low resolution pixel which is a so-called exception to general prediction rules is classified as a first classification. A cluster including no pixels which are exceptions is classified as a second classification. Supplemental information is encoded/decoded for all pixels in a cluster classified as the first classification. Pixels in the cluster classified as the second classification are encoded/decoded according to the general prediction rules.Other References
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