信息通信
信息通信
신식통신
XINXI TONGXIN
2015年
1期
9-12
,共4页
数字图像处理%Sobel边缘检测法%Prewitt边缘检测算法%现场可编程逻辑门阵列(FPGA)
數字圖像處理%Sobel邊緣檢測法%Prewitt邊緣檢測算法%現場可編程邏輯門陣列(FPGA)
수자도상처리%Sobel변연검측법%Prewitt변연검측산법%현장가편정라집문진렬(FPGA)
digital image processing%Sobel edge test%Prewitt edge detection algorithm%Field programmable logic gate array (FPGA)
主要探讨FPGA在边缘检测中的运用，分析两种不同边缘检测算子对图像处理的效果。由于FPGA算法硬件处理速度快、可编程、可重配置等特性，使其在图像处理方面占有很大的优势。为此文章提出了运用FPGA实现边缘检测的方法，并且根据FPGA的并行流水线性，对Sobel、Prewitt边缘检测算子分别进行了FPGA设计与实现以及仿真，并且对两种边缘检测算子对图像处理的效果进行了比较。通过仿真分析得出，Sobel和Prewitt边缘检测算子都有平滑噪声的作用，Sobel边缘检测算子可以提供较为准确的边缘方向信息，Prewitt边缘检测算子，其边缘性较Sobel边缘检测算子完整，但它们的边缘定位精度有待提高，仿真中通过改变程序中的阈值可以得到不同的处理效果，这也是利用FPGA的优点，方便容易、速度也得到了提高，并且可编程、可重配置，使得FPGA在数字图像处理方面显得非常优越。
主要探討FPGA在邊緣檢測中的運用，分析兩種不同邊緣檢測算子對圖像處理的效果。由于FPGA算法硬件處理速度快、可編程、可重配置等特性，使其在圖像處理方麵佔有很大的優勢。為此文章提齣瞭運用FPGA實現邊緣檢測的方法，併且根據FPGA的併行流水線性，對Sobel、Prewitt邊緣檢測算子分彆進行瞭FPGA設計與實現以及倣真，併且對兩種邊緣檢測算子對圖像處理的效果進行瞭比較。通過倣真分析得齣，Sobel和Prewitt邊緣檢測算子都有平滑譟聲的作用，Sobel邊緣檢測算子可以提供較為準確的邊緣方嚮信息，Prewitt邊緣檢測算子，其邊緣性較Sobel邊緣檢測算子完整，但它們的邊緣定位精度有待提高，倣真中通過改變程序中的閾值可以得到不同的處理效果，這也是利用FPGA的優點，方便容易、速度也得到瞭提高，併且可編程、可重配置，使得FPGA在數字圖像處理方麵顯得非常優越。
주요탐토FPGA재변연검측중적운용，분석량충불동변연검측산자대도상처리적효과。유우FPGA산법경건처리속도쾌、가편정、가중배치등특성，사기재도상처리방면점유흔대적우세。위차문장제출료운용FPGA실현변연검측적방법，병차근거FPGA적병행류수선성，대Sobel、Prewitt변연검측산자분별진행료FPGA설계여실현이급방진，병차대량충변연검측산자대도상처리적효과진행료비교。통과방진분석득출，Sobel화Prewitt변연검측산자도유평활조성적작용，Sobel변연검측산자가이제공교위준학적변연방향신식，Prewitt변연검측산자，기변연성교Sobel변연검측산자완정，단타문적변연정위정도유대제고，방진중통과개변정서중적역치가이득도불동적처리효과，저야시이용FPGA적우점，방편용역、속도야득도료제고，병차가편정、가중배치，사득FPGA재수자도상처리방면현득비상우월。
Objective:to explore the application of FPGA in the edge detection and analysis of two different edge detection op-erator to the effect of image processing. Method:because the FPGA hardware processing speed, programmable and reconfigur-ation of features such as, make it a big advantage in terms of image processing. This paper proposes using the FPGA realization of edge detection method, and based on the FPGA parallel linear water, Sobel, Prewitt edge detection operator respectively for the FPGA design and implementation, and has carried on the simulation of the two kinds of edge detection operator to compare the effect of image processing. Results:the simulation image you can see, Sobel and Prewitt edge detection operators affected by noise is small, Sobel edge detection operator can provide relatively accurate edge direction information, but the edge positio-ning accuracy is not high, Prewitt edge detection operator, their marginal relatively complete Sobel edge detection operator, by changing the threshold in the program of the simulation can get different treatment effect, this is the use of the advantages of the FPGA, and not only improves the speed, and the operation is simple and convenient. Conclusion:the results showed that the So-bel and Prewitt edge detection operators have the function of the smoothing noise, but they are the edges of the positioning ac-curacy, borderline Prewitt edge detection operator also relatively complete Sobel edge detection operator;And use FPGA to edge detection algorithm, convenient and easy, and also to improve the speed, and programming, configuration, the FPGA is very su-perior in terms of digital image processing.
