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Dominic Yip, Trevor Robert Elbourne, Hiren Patel: Encoding method and apparatus. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 24, 2001: US06266450 (33 worldwide citation)

An apparatus for the encoding of a series of wavelet coefficients of a predetermined size into a compact representation of the coefficients. The apparatus comprises a tree builder for constructing a tree form representation of the coefficients with leaf nodes representing coefficient values and inte ...


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Andrew Peter Bradley, Dominic Yip, Andrew James Dorrell: Color clamping. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, December 19, 2006: US07151863 (33 worldwide citation)

Disclosed is a method and apparatus for clamping the output values of filtered image data comprising a mapping of discrete sample values are disclosed. For each discrete sample value of the mapping a maximum sample value and a minimum sample value of a plurality of input discrete samples values used ...


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Dominic Yip, James Philip Andrew: Encoding method and apparatus for representing a digital image. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, August 12, 2003: US06606416 (31 worldwide citation)

The method encodes a digital image to provide a compressed representation of the image. The method initially performs a multi-level 2-D Discrete Wavelet Transform on the digital image, which is arranged in a hierarchical order of sub-bands. The method then tiles each sub-band to form a number of blo ...


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Kieran Gerard Larkin, Dominic Yip, Ian Richard Gibson: Method and apparatus for uniform lineal motion blur estimation using multiple exposures. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, May 3, 2005: US06888566 (14 worldwide citation)

A method and apparatus (9) for estimating the blur parameters of blurred images (g1, g2) are disclosed. The apparatus (9) has one or more image sensors (10) for capturing the blurred images (g1, g2), a plurality of correlators (20, 30) for performing autocorrelation of the blurred image (g1) and cro ...


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Dominic Yip, Andrew Peter Bradley, Kai Huang: Continuous kernel image interpolation. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, March 30, 2004: US06714210 (6 worldwide citation)

A method of resolution conversion is disclosed. The method calculates a scaling factor for a first set of discrete data values compared to said second set of discrete data values. A plurality of filter function coefficients are calculated, based on the scaling factor, utilising at least one of a plu ...


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James Philip Andrew, Dominic Yip: Method and apparatus for decoding a coded representation of a digital image. Canon Kabushiki Kaisha, April 1, 2003: US06542641 (4 worldwide citation)

The method decodes an compressed representation of a digital image. The compressed representation is in the form of a bitstream comprising in sequence encoded bitplanes each having first portions representative of the significances of first sub-regions in the current bitplane and second portions rep ...


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Dominic Yip: Generating lists of positions of coefficients in a code block to be entropy coded. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, April 8, 2003: US06545618 (4 worldwide citation)

A method of entropy coding symbols representative of a code block comprising transform coefficients of a digital image. The method comprises a significance propagation pass


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Dominic Yip: Wavelet filtering. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 26, 2005: US06922491 (2 worldwide citation)

The preferred method wavelet filters a digital image. The digital image comprises a plurality of pixels arranged in a plurality of columns and rows. The method processes one or more bands of pixels of the image in turn, where each band comprises a plurality of rows. The method performs the following ...