Image transformation coding device with adaptive quantization characteristic selection
May 21, 2010. 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 ReferencesApparatus and method for generating a dispersed dot half tone picture from a continuous tone picture Spatially integral, video signal processor Apparatus for detecting input signal Motion compensated interpolation of digital television images Method of and device for estimating motion in a sequence of pictures Bandwidth reduction system for television signals Adaptive image acquisition system Patent #: 4949391 InventorsApplicationNo. 525588 filed on 05/21/1990US Classes:382/239, Adaptive coding (i.e., changes based upon history, activity, busyness, etc.)375/240.05, Feed back375/240.16, Motion vector382/107, Motion or velocity measuring382/248, Transform coding382/251QuantizationExaminersPrimary: Brinich, StephenAttorney, Agent or FirmInternational ClassG06K 009/36Foreign Application Priority Data1989-05-24 JPAbstractA transformation coding device which applies high by efficient coding to a digital image signal, and in which a plurality of quantization characteristics are prepared and one quantization characteristic is adaptively selected in accordance with a predicted distortion for an input signal and a sequence of transformation coefficients, thereby allowing the quantization to be performed in accordance with statistical properties of an input signal to be implemented, and at the same time, allowing a signal to be efficiently compressed.Other References
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