浙江理工大学学报
浙江理工大學學報
절강리공대학학보
JOURNAL OF ZHEJIANG SCI-TECH UNIVERSITY
2014年
2期
195-200
,共6页
谢森栋%田秋红%孙政荣%张立见
謝森棟%田鞦紅%孫政榮%張立見
사삼동%전추홍%손정영%장립견
视频引伸计%图像处理%数学形态学增强%Cr色度%亮度梯度
視頻引伸計%圖像處理%數學形態學增彊%Cr色度%亮度梯度
시빈인신계%도상처리%수학형태학증강%Cr색도%량도제도
video extensometer%image processing%mathematical morphology enhancement%Cr chro-minance%gradient of brightness
针对视频引伸计易受光照变化干扰的问题,提出一种基于图像亮度调整和去雾增强相结合的图像预处理算法,获得了激光标记和试样标记的清晰图像;分别利用 Cr色度阈值分割算法和基于感兴趣区域的亮度梯度阈值分割算法提取激光标记和试样标记。在光照变化和有无试验机夹头干扰的情况下分别进行了实验,验证了算法的稳定性和准确性。
針對視頻引伸計易受光照變化榦擾的問題,提齣一種基于圖像亮度調整和去霧增彊相結閤的圖像預處理算法,穫得瞭激光標記和試樣標記的清晰圖像;分彆利用 Cr色度閾值分割算法和基于感興趣區域的亮度梯度閾值分割算法提取激光標記和試樣標記。在光照變化和有無試驗機夾頭榦擾的情況下分彆進行瞭實驗,驗證瞭算法的穩定性和準確性。
침대시빈인신계역수광조변화간우적문제,제출일충기우도상량도조정화거무증강상결합적도상예처리산법,획득료격광표기화시양표기적청석도상;분별이용 Cr색도역치분할산법화기우감흥취구역적량도제도역치분할산법제취격광표기화시양표기。재광조변화화유무시험궤협두간우적정황하분별진행료실험,험증료산법적은정성화준학성。
Aiming at the problem that conventional video extensometers are usually susceptible to light changes ,this paper comes up with an image preprocessing algorithm based on combination of image bright-ness adjustment and defogging enhancement .Through such algorithm ,the clear image with laser mark and specimen mark can be obtained .The laser mark and sample mark can be extracted through Cr chrominance threshold segmentation algorithm and brightness gradient threshold segmentation algorithm based on area of interest .The experiments are carried out respectively under light changes and chuck interference of test machine to verify the stability and accuracy of the algorithm .