高速打蛋机蛋清蛋黄分离中基于计算机视觉的散黄蛋识别研究     

谢雄峰  王树才 《广东农业科学》2014,41(17):176-179

链式打蛋机用于鸡蛋蛋清蛋黄的快速分离,针对鸡蛋散黄无法分离的问题,提出了基于彩色图像处理的对散黄蛋进行自动识别的方法.利用机器视觉装置采集链式打蛋机生产线上的图像,从每一幅原始图像中根据坐标裁剪出目标区域260×240像素的子图像,选定蛋黄的黄色区域作为样本点,在RGB空间利用欧几里得距离对图像进行分割,找出蛋清斗中蛋黄的区域,计算蛋黄区域的面积,通过蛋黄面积大小进行判断鸡蛋是否散黄,达到对散黄蛋进行识别的目的,本方法对散黄蛋识别的正确率达到96.67％;用图像识别的方法可快速判断鸡蛋散黄情况,可以将本方法应用到生产实践中代替人眼进行识别.  相似文献   

基于颜色特征的玉米种子纯度识别   总被引：5，自引：1，他引：4  

闫小梅  刘双喜  张春庆  王金星 《农业工程学报》2010,26(13):46-50

为准确快速的识别出玉米种子中的杂粒,提高玉米种的纯度,该文提出一种以玉米种子冠部与侧面颜色作为特征向量进行纯度识别的新方法。该方法首先将玉米种子原始图像进行背景分割、单粒提取,然后进行冠部核心区域及侧面RGB、HSV颜色特征向量的提取,最后采用Fisher判别理论将多维特征向量投影到一维空间中,进行K-均值聚类分析。试验结果证明：利用Fisher判别理论在一维空间上进行K-均值聚类分析,玉米种子纯度的识别率高于93.75%。影响玉米种子正确识别率的主要因素是投影方向的选择及正确的冠部核心区域的提取。  相似文献   

普洱茶发酵阶段色泽的变化及其与品质的关系   总被引：2，自引：1，他引：1  

王秋萍  龚加顺  邹莎莎 《农业工程学报》2010,26(13):394-399

为阐明普洱茶不同发酵阶段色泽变化及其与普洱茶品质的关系,研究了恒温恒湿与恒温非恒湿条件下,接种外源优势菌（酿酒酵母）与未接种外源优势菌的云南普洱茶在不同发酵阶段的感官品质、汤色的定量分析及茶色素含量的变化。结果表明：明度指数L及明度指数差ΔL与感官指标汤色的评分呈正相关;色品指数a、b及色差值Δa、Δb与汤色感官评分、滋味评分和品质总评分均呈正相关;不同发酵阶段样的ΔL、Δb的值逐渐减小,而Δa的值逐渐增大,这与其茶红素和茶黄素的值逐渐减小和茶褐素的值不断增大是一致的。普洱茶发酵阶段色泽的量化分析可作为普洱茶品质评价的重要指标,在自动化恒温恒湿条件下发酵普洱茶,有利于实现普洱茶清洁化加工和提高普洱茶品质的稳定性。  相似文献   

基于透射光和反射光图像同位分割的小麦品种识别方法研究     

闫宁  张晗  董宏图  康凯  罗斌 《浙江农业学报》2022,34(3):590-598

为提高基于机器视觉的小麦品种识别准确性,本文通过透射光和反射光同位图像分割对种子颜色特征参数进行了优化提取.采用透射光图像辅助反射光图像分割的方式从种子图像中分割出胚部区域,并分别提取小麦整粒、种胚、胚乳区域的颜色特征参数.以济麦22、济麦44、京麦9、京麦11共4个品种种子作为研究对象,利用HALCON机器视觉软件获...  相似文献   

辣椒种质资源的红色素含量评价     

郭爽  黄贞  常绍东  刘玉平  吴蓓 《热带作物学报》2013,34(2):218-222

以123份辣椒种质资源为材料,采用有机溶剂法测定其红色素含量及ASTA色值,用DPS数据分析软件进行聚类分析,对辣椒种质资源的红色素含量进行评估.123份辣椒种质资源中,红色素含量介于9.12～1.62 g/kg之间,平均红色素含量为5.05 g/kg,极差为7.5.ASTA色值介于336.43～59.6之间,平均ASTA色值为186.48,极差为276.83.采用类平均聚类法将123份辣椒种质资源按其红色素含量聚为5大类,分别为极高型、高型、普通型、低型、极低型.短指型、短羊角型、羊角型、线椒型、长线椒型等不同类型的辣椒在5个红色素含量类群中均有分布,推测辣椒红色素含量高低与辣椒类型没有相关性.  相似文献   

不同浓度纤维素酶在双红葡萄酿酒中对颜色的影响     

吕闻明 《北方园艺》2010,(24):177-180

以‘双红’山葡萄为试材,通过用纤维素酶处理,对葡萄进行色素提取。结果表明:红色素最大吸收波长为530 nm。得出0.03 mol/L浓度的纤维素酶水溶液的色素提取效果最好,在料液比为1∶10,浸提温度40℃条件色素浸出率较高。颜色指标稳定后,0.03 mg/L的纤维素酶处理组L*值为26.9,透明度最低;a*值为18.6,红色色调最大;c*值为29.1,颜色最深;H*值为-53.6,红色色调最重。酿酒过程中以0.03 mg/L的纤维素酶处理组的全过程曲线波动最小,颜色最稳定。  相似文献   

Characterization of MC1R and KIT Genotypes in Luchuan Pig Population     

QIN Ke  HUANG Xiang  ZENG Jian-hua  WANG Chen  SUN Guan-jie  SONG De-qing  CHEN Yao-sheng  LIU Xiao-hong  HE Zu-yong 《中国畜牧兽医》2017,44(3):773-781

In order to assess the purity of Luchuan pig populations, four South Chinese local pig breeds including Putian Black pig, Yuedong Black pig, Dahuabai pig, Bama miniature pig and three foreign pig breeds including Duroc pig, Yorkshire pig and Landrace pig were studied as controls by sequencing of PCR products, MC1R and KIT genotypes in 56 Luchuan pigs were analyzed in this study. Sequencing results indicated that a splicing mutation (G>A) was presented in the first base in intron 17 of KIT gene in both Yorkshire pig and Landrace pig, in contrast, the wildtype GG of KIT gene was presented in Luchuan pig, four south Chinese local pig breeds and Duroc pig.Compared with Hainan wild boar, South Chinese local pig breeds had two missense mutations 95Val > Met and 102Leu > Pro in the coding region of MC1R gene;Compared with Yorkshire pig, Landrace pig and Duroc pig, South Chinese local pig breeds had 5 to 6 SNPs in MC1R gene 5'UTR, and in addtion, an A base deletion in MC1R gene 3'UTR. Furthermore, we found one litter of Luchuan pig with abnormal coat color.The results showed that the presentation of two distinct MC1R genotypes E^D1 and E^p in both litters and the sow,but only E^D1 in the boar. Considering E^p was derived from Pietrain pig, we preliminarily considered that the genome of the sow might be infiltrated with foreign pig breeds. In summary, we detected the genotypes of the coat color genes KIT and MC1R in eight pig breeds, confirmed the molecular differences of coat color between Chinese local pig breeds and foreign pig breeds, which could be useful for the further investigation of the molecular mechanism of pig coat color.  相似文献   

Effect of strain on duck breast meat quality     

《The Journal of Applied Poultry Research》2015,24(3):401-407

Duck meat consumption is low but steady in the United States (US), while rapidly expanding in other countries. The duck industry is moving from a traditional whole carcass product towards deboned breast fillets and other portions, which has prompted strain selection for breast weight and yield. The effect of bird strain was therefore evaluated for fillet weight, yield, and breast meat quality characteristics. Eighty butterflied paired fillets were obtained from each of 4 Pekin duck strains after carcasses were sized by weight at the processing plant (n = 640). All fillets were weighed and then half of the fillets were evaluated for color. One fillet from each carcass-pair was either frozen or kept fresh for cooking, reweighing, and subsequent color analysis (Commission Internationale de I'Eclairage (CIE) lightness L*, redness a*, and yellowness b*). Both fillets in each carcass-pair were evaluated using Allo–Kramer (AK) and Warner–Bratzler (WB) shear. Strain affected (P < 0.05) raw and cooked fillet weight. Strain C, with the largest BW and selected for both breast yield and growth rate, had higher raw and cooked breast weight. Cooked yield was not affected by strain and averaged 64.4%. Neither AK nor WB shear values were affected by strain, and averaged 4.8 kg/g and 4.2 kg, respectively. Strain had a slight but significant effect on color, affecting lightness (L*) values of all categories, and redness (a*) values of raw and cooked meat. Freezing and thawing produced large and significant thaw losses ranging from 10.4 to 13.6%; differing losses depended on the strain of duck. Duck strain affected breast fillet weights and lightness to a slight extent, but not cook yield or shear values.  相似文献   

中华富铁康900对断奶仔猪的饲喂效果试验     

《安全饲料添加剂产业化技术研究与应用》课题组 《四川畜牧兽医》2004,31(3):26-26,28

试验选用体重约8kg的三元杂交(杜长大)猪60头,随机分成3组,每组2个重复,分别饲喂含不同剂量中华富铁康900的饲粮,研究中华富铁康900对仔猪生产性能、肤色的影响。结果表明,以中华富铁康900取代饲粮中部分硫酸亚铁,显著提高仔猪平均日增重(P<0.05),显著降低料重比(P<0.05),明显改善仔猪肤色。根据试验效果,仔猪饲粮中中华富铁康900的添加量为2×10-4～4×10-4。  相似文献   

浅谈园林植物配置的艺术手法     

陆东芳 《福建农业大学学报(哲学社会科学版)》2006,9(6):94-96

随着城市的发展，园林植物在景观上的作用越来越重要，文章主要分析园林植物外在的线条、外形、质地、色彩的特性，并归纳了一些处理植物配置与色彩、质地、距离、光影、地形等之间关系的艺术手法。  相似文献