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Two-dimensional pyramid filter architecture

A filter and tapered technology, applied in the field of two-dimensional tapered filters, can solve problems such as increasing timing and reducing circuit throughput

Inactive Publication Date: 2007-10-10
INTEL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

While there are implementations that reduce or avoid the use of multipliers, such as by utilizing shift and sum circuits, this can lead to increased timing, reducing circuit throughput

Method used

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Embodiment Construction

[0021] In the following detailed description, various specific details are given in order to provide a thorough understanding of claimed subject matter. However, it will be understood by those skilled in the art that claimed subject matter may be practiced without these specific details. In other instances, well-known methods, procedures, components and circuits have not been described in detail so as not to obscure claimed subject matter.

[0022] As mentioned earlier, cone filtering, especially symmetric cone filtering, can be used in conjunction with color images or color image processing to decompose an image (for example into a background and foreground image) or to remove its moire. While the claimed subject matter is not limited in scope in this respect, a pyramidal filtering architecture that reduces computational complexity or processing and / or hardware cost is particularly desirable in this context. Likewise, implementations without multipliers, ie, implementations ...

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Abstract

An integrated circuit according to the present invention, which includes: a two-dimensional cone filter architecture with an order of 2N-1, where N is a positive integer greater than 3; the two-dimensional cone filter with an order of 2N-1 The architecture operates to generate at least the following signals at each clock cycle: a tapered filtered output signal corresponding to the output signal produced by four one-dimensional tapered filters of order 2N-1; a tapered filtered output signal corresponding to the output signal produced by four one-dimensional tapered filters of order [2 (N-1)-1] The output signal generated by four two-dimensional cone filters or one two-dimensional cone filter and represented by a signal sample matrix of order [2(N-1)-1] a tapered filtered output signal; wherein each output signal in the two-dimensional tapered filter architecture is summed at each clock cycle of the two-dimensional tapered filter architecture.

Description

[0001] related application [0002] This patent application is related to U.S. Patent Application Serial No. 09 / 754684, filed January 3, 2001, by Tinku Acharya, entitled "Multiplierless Pyramid Filter"; Tinku Acharya, entitled "Two-Dimensional Pyramid Filter Architecture", U.S. Patent Application, filed March 26, 2001 (attorney docket no. 042390.P11275); U.S. Patent Application, filed March 28, 2001, entitled "Conical Filter" application (Attorney Docket No. 042390.P11211); and Tinku Acharya's U.S. Patent Application (Attorney Docket No. 042390.P11211), filed March 2001, entitled "Two-Dimensional Conic Filter Architecture," These patent applications are assigned to the assignee of the present invention and are hereby incorporated by reference into this specification. technical field [0003] The present disclosure relates to two-dimensional pyramid filters. Background technique [0004] In image processing, it is often desirable to decompose an image, such as a color image...

Claims

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Application Information

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IPC IPC(8): H03H17/02G06T9/00G06T5/20G06F17/10G06T1/00H04N1/409
CPCG06T5/20G06T1/00
Inventor T·阿查亚
Owner INTEL CORP
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