[ 1] Ahmad S , Reid J F.Evaluation of colour representations f or maizeimages[ J] .Journal of Agricultural Engineering Research, 1996 , 63:185-196 .
[ 2] Scharf P C , Lory J A.Calibrating corn color from aerial photographsto predict sidedress nit rogen need[ J] .Agronomy Journal , 2002, 94:397-404 .
[ 3] Gaut am R, Panigrahi S .Image processing t echniques and neural network models for predicting plant ni trate using aerial images[ C] ∥Proceedings of the 2003 Int ernational Joint Conference on NeuralNetworks, 2003, 2 :1031-1036.
[ 4] 雷咏雯, 危常州,冶军, 等.计算机辅助叶色分析进行棉花氮素营养诊断的初步研究[ J] .石河子大学学报(自然科学版), 2004 , 22(2):113-116.
[ 5] 刘洪见,曾爱平,郑丽敏.基于数字图像处理技术的玉米氮肥营养状态诊断[ J] .农业网络信息, 2007(12):30-34 .
[ 6] 王晓静, 张炎, 李磐,等.地面数字图像技术在棉花氮素营养诊断中的初步研究[ J] .棉花学报, 2007, 19(2):106-113.
[ 7] Ling P P, Ruzhit sky V N .Machine Vision Techniques f orMeasuringthe Canopy of Tomat o Seedling[ J] .Journal of Agricultural EngineeringResearch , 1996 ,65 :85-95.
[ 8] Lukina E V, Stone M L, Raun W R.Est imating veget ation coveragein wheat using digi tal images[ J] .Journal of Plant Nut rit ion , 1999,22 :341-350 .
[ 9] F J Adamsen , T A Coffelt , J M Nelson ,et al.Method for using imagesfrom a color digital camera t o estimat e flow er number[ J] .CropScience, 2000, 40 :704-709 .
[ 10] Clement A, Vigouroux B.Unsupervised segment ation of scenes containingvegetation(Forsythia)and soil by hierarchical analysis of bidimensional hist ograms[ J] .Patt ern Recognition Lett ers , 2003 , 24:1951-1957.
[ 11] Aitkenhead M J ,Dalget ty I A, Mullins C E, et al.Weed and crop discriminationusing image analysis and artificial int elligence methods[ J] .Computers and Electronics in Agriculture, 2003 , 39 :157-171 .
[ 12] Kavdir I .Discrimination of sunf lower, weed and soil by artificial neuralnetw orks [ J] .Comput ers and Electronics in Agriculture, 2004,44 :153-160 .
[ 13] 陈佳娟, 纪寿文, 马成林, 等.基于遗传神经网络的玉米叶色的自动测定研究[ J] .农业工程学报,2000 ,16(3):115-117 .
[ 14] 赵春江, 陈立平, 杨宝祝.小麦形态诊断计算机图像智能化识别系统[ J] .北京农业科学,2000 ,18(2):2-4 .
[ 15] 陈佳娟,纪寿文,李娟,等.采用计算机视觉进行棉花虫害程度的自动测定[ J] .农业工程学报,2001 ,17(2):157-160 .
[ 16] 纪寿文,王荣本,陈佳娟, 等.应用计算机图像处理技术识别玉米苗期田间杂草的研究[ J] .农业工程学报, 2001, 17(2):154-156 .
[ 17] 李存军,王纪华,刘良云, 等.基于数字照片特征的小麦覆盖度自动提取研究[ J] .浙江大学学报(农业与生命科学版),2004 ,30(6):650-656.
[ 18] Perez A J , Lopez F, Benlloch J V , et al.Colour and shape analysist echniques f or w eed detection in cereal fields[ J] .Computers and Electronics in Agriculture, 2000, 25:197-212 .
[ 19] Kataoka T , Kaneko T ,Okamot o H .Crop grow th estimati on syst emusing machine vi sion[ C] ∥Proceedings of the 2003 Int ernationalConference on Advanced Intelligent Mechatronics ,2003 :1079-1083 .
[ 20] Neto J C ,M G E b , Jones D D.Individual leaf extractions from youngcanopy images using Gustafson Kessel clust ering and a genet ic algorithm[ J] .Computers and Elect ronics in Agriculture, 2006, 51:66-85 .
[ 21] Bakkera T ,Woutersa H , van Asselt a K, et al.A vision based row detectionsyst em f or sugar beet [ J] .Comput ers and Electronics in Agriculture, 2008, 60 :87-95 .
[ 22] 单成钢, 廖树华, 梁振兴, 等.小麦群体图像特征识别方法的研究———小麦群体总茎数的估测[ J] .作物学报, 2004 , 30(12):1281-1283 .
[ 23] 王桂琴,郑丽敏,朱虹,等.图像处理技术在冬小麦叶面积指数测定中的应用[ J] .麦类作物学报, 2004, 24(4):108-112.
[ 24] 袁佐云, 毛志怀,魏青.基于计算机视觉的作物行定位技术[ J] .中国农业大学学报, 2005, 10(3):69-72.[ 25] 于国英,毛罕平.农业智能车辆视觉导航参数提取的研究[ J] .农机化研究,2007(1):167-180 .
[ 26] 刘洪见,郑丽敏,曾爱平.图像处理技术在提取玉米图像骨架上的应用[ J] .农业网络信息, 2007(1):18-20 .
[ 27] 单成钢,廖树华,龚宇,等.应用数字图像技术估测冬小麦冠层生物量垂直分布特征的研究[ J] .作物学报, 2007, 33(3):419-424 .
[ 28] Hemming J , Rath T .PA-precision agriculture computer-vision-basedw eed identificat ion under field conditions using cont rolled lighting[ J] .Journal of Agricultural Engineering Research , 2001, 78(3):233-243.
[ 29] Cho S I, Lee D S , Jeong J Y.Weed plant discrimination by machinevision and artificial neural network[ J] .Bi osystems Engineering ,2002 ,83(3):275-280 .
[ 30] Shrestha D S , S teward B L, Bi rrell S J .Video Processing f or EarlySt age Maize Plant Detection[ J] .Biosystems Engineering , 2004 , 89(2):119-129 .
[ 31] Lalibert e A S , Rango A , Herrick J E , et al.An object-based image analysisapproach f or determining f ract ional cover of senescent andgreen vegetation wi th digital plot photography[ J] .Journal of AridEnvironments , 2007 , 26 :1-14 .
[ 32] Tellaeche A, Bu rgos-Artizzu X P , Pajares G , et al.Avision-basedmethod for weeds identification through the Bayesian decision theory[ J] .Patt ern Recognition , 2008 , 41 :521-530 .
[ 33] Gee C, Bossu J , Jones G ,et al.Crop/ weed di scriminat ion in perspectiveagronomic images[ J] .Computers and Elect ronics in Agriculture,2008 ,60:49-59 .
[ 34] Onyango C M ,Marchant J A .Physics-based colour image segmentationf or scenes containing vegetation and soil [ J] .Image and Vi sionComputing, 2001 , 19 :523-538 .
[ 35] Onyango C M ,Marchant J A .Segment ation of row crop plants fromw eeds using colour and morphology[ J] .Computers and Elect ronicsin Agriculture, 2003 , 39 :141-155 .
[ 36] Casady W W, Singh N , Costello T A.Machine vision f or measurementof rice canopy dimensions[ J] .Trans of the ASAE, 1996, 39(5):1891-1898.
[ 37] 吴富宁, 朱虹,郑丽敏, 等.计算机辅助小麦图像识别应用中颜色特征基本参量的表达[ J] .农业网络信息,2004(4):10-14 .[ 39] Moges S M , Raun W R, Mullen R W, et al.Evaluation of green, red,and near infrared bands for predict ing winter w heat biomass, nit rogenuptake, and f inal grain yield[ J] .Journal of Plant Nut rition, 2004,27(8):1431-1441.
[ 40] Cart elat A, Cerovic Z G , Goulas Y, et al.Optically assessed cont entsof leaf polyphenolics and chlorophyll as indicat ors of nit rogen deficiencyin wheat(Tri ticum aestivum L)[ J] .Field Crops Research ,2005, 91 :35-49 .
[ 41] Babar M A , Reynolds M P, van Ginkel M, et al.Spect ral reflectanceindices as a potential indi rect selecti on crit eria f or wheat yield underirrigation[ J] .Crop Science,2006 ,46:578-588 .
[ 38] Wu J , Wang D, Bauer M E .Assessing broadband veget ation indicesand quick bird data in estimating leaf area index of corn and potatocanopies[ J] .Field Crops Research ,2007 ,102:33-42 .
[ 42] Jin Yaqiu .Retrieval of crop biomass in 1989 by using ANN model of1988[ C] ∥Internat ional Geoscience and Remote Sensing Symposium, IGARSS96, Remote Sensing for a Sustainable Future.1996 , 4 :2380-2383.