AN IMAGE-PROCESSING IC FOR BACKPROJECTION AND SPATIAL HISTOGRAMMING IN A PIPELINED ARRAY

被引：9

作者：

AGI, I ^{[1
]}

HURST, PJ ^{[1
]}

CURRENT, KW ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT ELECT ENGN & COMP SCI,SOLID STATE CIRCUITS RES LAB,DAVIS,CA 95616

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1993年 / 28卷 / 03期

关键词：

D O I：

10.1109/4.209987

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The first VLSI digital signal processor that performs both high-precision image backprojection and spatial histogram calculations at raster-scan rates as high as 30 MHz is described. Realized in 1-mum CMOS technology, this 13.3-mm x 13.3-mm chip is designed to handle images as large as 1024 x 1024 12-b pixels. Loadable coefficients and a unified architecture allow this IC to be used with a variety of computed-tomography scanners for image reconstructions, including fan- and parallel-beam reconstruction. This chip also computes the forward Radon transform, which is a spatial histogram, permitting it to be used for iterative reconstruction algorithms. The bit lengths in the fixed-point architecture assure 12-b reconstruction accuracy.

引用

页码：210 / 221

页数：12