李欣欣 任然



摘 ?要: 激光繪圖儀成像過程中的圖像處理技術是激光繪圖儀圖像輸出精度的保障,因此對其進行深入研究。分析激光繪圖儀成像原理后,通過圖像加窗處理,截取220×220像素的圖像,提升激光圖像處理效率;采用基于核方法的自適應維納濾波去噪算法對截取的激光圖像進行降噪處理后,采用灰度值形態學方法提取圖像邊緣;在此基礎上采用Radon尺度變換方法對激光圖像進行RGB分解,獲取激光圖像幾何結構紋理分布特征集合。經實驗證明,采用所研究的圖像處理技術得到的目標物體成像最小誤差和最大誤差分別為0.002 m和0.319 m,大大提高了成像精度,且具有較高的降噪性能和處理性能。
關鍵詞: 圖像處理技術; 激光繪圖儀; 成像過程; 圖像降噪; 圖像邊緣提取; RGB分解
中圖分類號: TN911.73?34; TP301 ? ? ? ? ? ? ? ? ?文獻標識碼: A ? ? ? ? ? ? ? ? ? 文章編號: 1004?373X(2020)07?0062?04
Research on image processing technology in imaging process of laser plotter
LI Xinxin, REN Ran
(School of Software, Chongqing Institute of Engineering, Chongqing 400000, China)
Abstract: The image processing technology in the imaging process is the guarantee of the laser plotter′ image output precision, so the technology is studied in depth. On the basis of analyzing the imaging principle of the laser plotter, the image of 220×220 pixels is intercepted by image windowing to improve the efficiency of laser image processing, and the image edges are extracted by gray value morphology method after an adaptive Wiener filtering denoising algorithm based on the kernel method is adopted to perform denoising processing of the intercepted laser image. On this basis, the Radon scale transform method is used for RGB decomposition of the laser image to obtain the texture distribution feature set of the geometric structure of laser image. The experiment results show that the minimum error and maximum error of the target object imaging obtained with the proposed image processing technology are 0.002 m and 0.319 m respectively, which greatly improves the imaging accuracy, and is of higher denoising performance and processing performance.
Keywords: image processing technology; laser plotter; imaging process; image denoising; image edge extraction; RGB decomposition
0 ?引 ?言
當今社會,計算機技術愈發成熟,諸多工作領域內均涉及圖像文件輸出,通常情況下采用的圖像輸出設備為繪圖儀[1]。激光繪圖儀作為繪圖儀的主要類型,具有圖像輸出精度高、速率快、非接觸等優勢[2],在制造、測繪等行業廣泛使用。激光繪圖儀成像過程中的圖像處理技術是激光繪圖儀圖像輸出精度的保障[3],因此研究激光繪圖儀成像過程中的圖像處理技術具有重要應用意義。
以往國內外研究人員對激光圖像處理方法有較多研究,但均存在一定局限性,例如,有學者采用灰度圖像處理技術增強圖像邊緣,快速高效地設計出輸……