Image compression
First Claim
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1. A method of data processing, comprising:
- providing image-data in an image space that encodes light as a spaced-apart discrete input set with dead spaces between all input set elements wherein each element is windowed by a first window function;
transforming said light from the image space to a transform space utilizing a continuous optical Fourier transforming component; and
windowing spatially discrete regions in the transform space with a second window function that is related to the first window function by a matching condition so that at least one of intensities and phases of transformed light in the transform space regions are proportional to coefficients of a discrete transform of the input set; and
detecting data carried by said transformed light at the spatially discrete sampler regions.
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Abstract
A method of image compression, comprising: providing image-data encoding light; transforming said light from an image space to a transform space utilizing an optical component; and converting said transformed light into electrical signals, which electrical signals represent a compressed representation of said image data.
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Citations
47 Claims
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1. A method of data processing, comprising:
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providing image-data in an image space that encodes light as a spaced-apart discrete input set with dead spaces between all input set elements wherein each element is windowed by a first window function; transforming said light from the image space to a transform space utilizing a continuous optical Fourier transforming component; and windowing spatially discrete regions in the transform space with a second window function that is related to the first window function by a matching condition so that at least one of intensities and phases of transformed light in the transform space regions are proportional to coefficients of a discrete transform of the input set; and detecting data carried by said transformed light at the spatially discrete sampler regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Apparatus for optically processing data, comprising:
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an input for receiving data; a spatially modulated light source responsive to said input for presenting said input as a spaced apart discrete input set with dead spaces between all input set elements; at least one continuous Fourier transforming optical component for transforming said data between an image space and a transform space, using a two dimensional signed discrete linear transform; and a spatially discrete sampler for sampling at locations corresponding to said discrete transform. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A single integrated multi-block-transform optical element, comprising:
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a plurality of optical groups each group comprising at least one optical sub-element, wherein each of said optical groups optically transforms a block of data using a signed linear discrete transform, wherein said block is part of a data set divided into blocks for block-transforming, including at least one other block being transformed in parallel by another optical group of said integrated element and said data is arranged as a spatially impulse image. - View Dependent Claims (44, 45, 46, 47)
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Specification