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4698689 |
Progressive image transmission
System and method of progressively transmitting and reconstructing an image in which an approximate image is reconstructed based upon partial information and details are added as additional...
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4580162 |
Adaptive picture image compression system
An image compression system wherein the image is arranged in a block 1 of elements which are Hadamard transformed 2 and then quantized 3 into sequences. The DC component is prediction 4 into a DC...
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4504860 |
Method and process for transmitting an image
A method and an apparatus for transmitting an image in which the image is sampled at a first plurality of points. The samples are then subjected to a two-dimensional unitary transform to produce a...
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4432019 |
Simultaneous amplitude sequency apparatus
A simultaneous amplitude sequency apparatus utilizing a scanner/modulator unit to scan an image and provide an analog data signal, which is digitized in an A/D converter. The digital data signal is...
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4291339 |
Facsimile transceiver
A scanner scans an original document in two orthogonal directions and produces binary data signals representing the document. An extractor combines each two scan lines into one scan line by taking...
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4280143 |
Method and means for scale-changing an array of boolean coded points
Scale-changing method and apparatus is described for converting raster-scanned data received for example from a scanner 2 at a first picture element (pel) resolution to a second lower pel...
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