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提出了一种基于段的连通域标记处理算法,同时对纸病区域进行连通域标记和形状特征值提取,旨在提高纸病检测的准确率和效率。该算法利用纸病区域为简单连通图像的特点,采用段技术实现了纸病区域的标记处理,探讨了在标记处理同时快速统计与形状特征值计算有关的中间参数的方法,利用标记结果及形状特征值实现了纸病的快速检测。该算法优化了标记处理与形状特征值提取的过程,减少了纸病图像的扫描次数。结果表明,该算法达到了准确、快速的纸病检测效果,且易于扩展到实际的纸病检测系统中。 相似文献
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本课题提出了一种适合高速宽幅造纸机纸病在线实时检测的复合算法,该算法的基本思想是:首先通过快速傅里叶变换(fast Fourier transform,FFT)将时域图像转换到频域,以便使用频域图像与高斯(Gaussian)高通滤波器做乘积运算进行滤波;再通过快速傅里叶逆变换(inverse fast Fourier transform,IFFT)将频域中的图像转换到时域,以便下一步使用运算速度较快的分水岭算法对滤波后的图像进行快速缺陷分割,实现纸病在线实时检测。利用采集到的2000余张纸病图片进行纸病检测实验,结果表明,本课题提出的复合算法具有快速、高效、适用性强、分割效果好等优点,可满足纸病在线检测对图像处理算法实时性和准确性两方面的要求。 相似文献
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针对纸病检测系统普遍存在的快速性与实时性均较差问题,借鉴人眼视觉中“选择性注意”机制,提出了采用“选择性缓存处理”方法快速提取与检测纸病。系统采用“CCD + FPGA”的模式,利用FPGA流水线并行处理特性对线阵CCD采集到的图像数据流进行预处理与特征提取,并同时缓存纸病区域图像。由于整个处理过程为流水线式并行处理,且仅缓存纸病区域图像,因此极大地提高了纸病提取检测的速度并节约大量的存储空间。结果表明,该方法硬件资源占用率极小,且能快速、准确地提取纸病信息,具有很强的灵活性与实时性,可以满足高速纸机实时检测的需求。 相似文献
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随着造纸工业纸机速度和纸幅宽度的增长,传统的纸病检测处理方式面临着图像数据传输量剧增,纸病检测系统难以实现实时性处理的问题。压缩感知理论能够有效降低数据的采样量,但将压缩感知应用于二维纸病图像时,面临着重构纸病图像质量不高的问题。本研究采用分块压缩感知(BCS)-平滑投影Landweber(SPL)重构算法对纸病图像进行重构,并着重研究了该算法在不同采样率和不同图像分块大小下的重构效果。实验结果表明,在压缩感知框架下,通过BCS-SPL算法重构的低采样率纸病图像具有较高的图像质量,有效降低了纸病图像数据的传输量。 相似文献
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造纸工业的自动化生成过程中,不可避免的会使纸张出现各种表面缺陷,缺陷的存在严重影响到纸张的质量和纸产品生产的效率,因此对于纸张表面缺陷的智能化检测逐渐成为纸张生产领域研究热点。设计了一种基于遗传模拟退火算法的纸张表面缺陷检测与分类算法,首先对造纸厂生产线上工业相机采集的纸张图像进行预处理、纸张缺陷区域检测与提取,重点设计了遗传模拟退火算法的缺陷检测分类方案,经验证,所设计的遗传模拟退火算法得到的模型能够对边裂、黑斑、孔洞、褶皱、亮斑和划痕这六类纸病精确的辨识。缺陷的辨识率大于99.7%,完全满足纸张表面质量的检测要求。 相似文献
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造纸加工工艺的进步带动了纸机加工车速的提升,同时也带来了更加复杂的纸病处理问题。基于位平面理论,构建了一种新的纸病检测数学形态算法,旨在为现代造纸加工行业中的纸病检测工艺提供一种抗干扰能力强、定位准确以及运算较为简单的数学形态算法。首先对位平面技术的理念和运行策略进行分析;其次对基于位平面的纸病检测算法进行论述,从自适应中值滤波、获取图像的增强位平面、用数学形态学算法进行边缘检测等角度进行了详细研究;最后对该种类的纸病检测数学形态算法进行方针结果分析,认为该种算法能够在运算简单的基础上,更好地检测出纸病缺陷提供优良的纸病检测抗干扰性的定位精准性算法。 相似文献
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Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications. 相似文献
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Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool. 相似文献
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《肉类研究》2014,(12)
<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of 相似文献
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《印刷工业》2014,(9):94-95
In the 2014 China(Shanghai)International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan; 相似文献
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The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)" 下载免费PDF全文
《造纸信息》2014,(8)
正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly 相似文献
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《造纸信息》2014,(8):99-100
On December 24th, 2013, the meeting on the selection of top 10 news of China's paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation. 相似文献
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National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan" 下载免费PDF全文
《造纸信息》2014,(8):83-84
In Apri Commi major p Plan" (h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the "13th Five-Year ereafter referred to as "The Announcement") 相似文献
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《食品科学》2014,(17)
<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the latest scientific 相似文献
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《纺织机械》2014,(3)
正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing, 相似文献
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A Burgos-Hernández R López-García H Njapau D L Park 《Food Additives & Contaminants》2001,18(9):797-809
In previous studies with aflatoxin-contaminated corn an uncharacteristic response for AFB1 in the Salmonella/microsomal mutagenicity assay (Ames test) was observed and the presence of anti-aflatoxin factors in the corn was suggested. In the current study, corn was extracted and fractionated using thin layer chromatography (TLC) using different developing solvent systems and the Ames test was used to monitor for anti-mutagenic activity in the corn fractions. Both Salmonella tester strains TA98 and TA100 with metabolic activation (S9) were used. Several corn fractions, at different stages in the isolation and purification process, showed anti-mutagenic dose-responses when exposed to pure AFB1. Corn extracts were non-toxic to the tester strains and TLC fractions that showed the best anti-mutagenic dose-responses were selected for further partial characterization analyses. 相似文献