FPGA-Based Optimal Mapping Implementation for Polar to Cartesian Coordinate Transformation In Image Processing

• Main Authors: WEI-CHEN LEE, 李偉禎
• Other Authors: 任善隆
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/60570176678627053886

碩士 === 義守大學 === 電子工程學系 === 89 === An axis transformation is necessary if radar data, expressed in terms of polar coordinates, is to be displayed on a raster scan display, which must use Cartesian coordinates. The transformation to Cartesian coordinates requires real multiplication by trigonometric functions. Normally, it is achieved by software. The slow operation in software is unable to meet the requirement of radar data in real time. This thesis will study the Bresenham algorithm to calculate the optimum pixel address using addition and subtraction operations in hardware. The pixel address of sample data of primary and secondary surveillance radar to be update can be implemented by hardware using ALTERA’s FPGA chip to achieve the performance of real time.