Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1987-06-16
1989-02-21
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358135, 358136, 382 56, H04N 712
Patent
active
048070297
ABSTRACT:
In a method of reconstructing an image from compression-processed image signals, the image is reconstructed from transformed image signals obtained by carrying out irreversible compression encoding processing of image signals and then carrying out decoding processing. The irreversible compression encoding processing and the decoding processing of training image signals representing a predetermined training image are carried out to obtain transformed training image signals prior to the image reconstruction. The transformed training image signals are compared with the training image signals, and differences therebetween are calculated at respective picture elements. Noise signals having a signal value distribution in accordance with the distribution of the differences are generated, and the image is reconstructed by randomly adding the noise signals to the transformed image signals.
REFERENCES:
patent: 3679821 (1972-07-01), Schroeder
patent: 4224678 (1980-09-01), Lynch et al.
patent: 4541012 (1985-09-01), Tescher
patent: 4633296 (1986-12-01), Cham et al.
patent: 4691329 (1987-09-01), Turi et al.
patent: 4698689 (1987-10-01), Tzou
Fuji Photo Film Co. , Ltd.
Groody James J.
Peng John K.
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