--- title: Cámara multiespectral de bajo costo para diagnóstico y seguimento de cultivos description: Un array de cámaras de bajo costo con filtros apropiados permite obtener imágenes de gran utilidad para el monitoreo de la salud vegetal author: name: Walter Jerusalinsky canonical: https://www.idoneos.com/camara_multiespectral_de_bajo_costo_para_diagnostico_y_seguimento_de_cultivos/ source: camara_multiespectral_de_bajo_costo_para_diagnostico_y_seguimento_de_cultivos/index.md --- Tenemos cuatro cámaras de tecnología CMOS mas el sensor termogŕafico La cámara destinada a la luz visible es sensible en un rango total que va de los 400nm a los 950nm , pero está limitada mediante un filtro pasabajo aproximadamete en los 700nm que es el "red edge" más allá del cual empieza el infrarrojo cercano (NIR) , Los canales de luz visible entregan información separada para azul , verde y rojo En la siguiente tabla se puede apreciar la sensibilidad relativa de cada canal de luz visible para cada longitud de onda. Estos valores son importantes en los cálculos que hacemos la detección por colorimetría. Longitud de Onda nm| rojo| verde| azul ---|-------|------|-----| 400| 15.6983958576| 5.5268306226| 56.7565026087 401| 15.6983958576| 5.5268306226| 56.7565026087 402| 15.6983958576| 5.5268306226| 57.2223744018 403| 15.0778849797| 5.4335218278| 58.0412273158 404| 14.4658045755| 5.3507022713| 59.4537348112 405| 13.8663108302| 5.2789059097| 61.643218696 406| 13.2613942399| 5.2172255938| 63.6830066682 407| 12.6429040509| 5.1614431001| 65.0903736773 408| 12.0433185426| 5.115421375| 65.9402109164 409| 11.4944428957| 5.0839440176| 66.7868733437 410| 11.0063935622| 5.0762068636| 67.6230987884 411| 10.5667272903| 5.095190781| 68.3757296083 412| 10.1619688104| 5.1219342601| 69.0188289327 413| 9.7845106332| 5.136744063| 69.5096820685 414| 9.4429050079| 5.1288685654| 69.9064470871 415| 9.1256294173| 5.1092927777| 70.2918050176 416| 8.8190354462| 5.0889259135| 70.7251448388 417| 8.5164745726| 5.0785250634| 71.1415759121 418| 8.2256108884| 5.0749418059| 71.5840937366 419| 7.9460314418| 5.0762628327| 72.1188374318 420| 7.676981388| 5.0887070609| 72.7893081127 421| 7.4169633796| 5.1184207556| 73.5572714635 422| 7.1667263616| 5.1670828479| 74.3747183432 423| 6.929048121| 5.2295506192| 75.2182578822 424| 6.706686692| 5.3001233952| 76.1060594224 425| 6.4994497022| 5.3742812402| 76.9945846413 426| 6.3018987762| 5.4556993241| 77.7928747612 427| 6.1083234849| 5.5432325639| 78.5408777632 428| 5.9178550587| 5.6342897441| 79.4172640241 429| 5.7347013861| 5.7248170927| 80.6023701709 430| 5.5632715082| 5.8128162038| 82.0482807892 431| 5.407974466| 5.9079095683| 83.3101336881 432| 5.2732193008| 6.0204620484| 84.4538723393 433| 5.1670155499| 6.1598172816| 85.6561827637 434| 5.0885212781| 6.3215154133| 86.8868323855 435| 5.0202166157| 6.4926787953| 88.0907500721 436| 4.9442795213| 6.6603513499| 89.2742177307 437| 4.8565039408| 6.8320425699| 90.3504427101 438| 4.7647662953| 7.0098018906| 91.313271987 439| 4.6690668215| 7.1718635874| 92.1628816029 440| 4.5693678053| 7.2965272688| 92.8788287942 441| 4.4645230262| 7.3744822319| 93.4520466151 442| 4.3555066911| 7.4226595511| 93.9151755631 443| 4.2443917723| 7.4612707077| 94.3046733137 444| 4.132594899| 7.5079886025| 94.6006834904 445| 4.0158353638| 7.5502874125| 94.8036826536 446| 3.8982703611| 7.591477087| 94.9663396578 447| 3.7866370512| 7.6429589742| 95.1393684288 448| 3.6868652894| 7.7141453245| 95.3110038991 449| 3.5973222973| 7.8005105984| 95.4684562618 450| 3.5141208655| 7.8988949239| 95.6179444342 451| 3.4336332923| 8.0072253287| 95.7657437612 452| 3.3525230216| 8.1198714451| 95.9138472533 453| 3.2717595053| 8.2337605872| 96.0549573488 454| 3.1954271499| 8.3647053389| 96.1807821582 455| 3.1276719004| 8.5294067777| 96.2859087342 456| 3.0689127452| 8.7231332042| 96.3763510199 457| 3.0169250644| 8.937049434| 96.4488661704 458| 2.9747558462| 9.2002665616| 96.4987899979 459| 2.9455082435| 9.5422672253| 96.5234930311 460| 2.9297294922| 9.9753694902| 96.5255802246 461| 2.9259466099| 10.4847332824| 96.5052170573 462| 2.9336413535| 11.0562262122| 96.4624035292 463| 2.9525272191| 11.6805000848| 96.3899611012 464| 2.9861708285| 12.3793020021| 96.289295697 465| 3.0312595263| 13.131584024| 96.1774606704 466| 3.0815743951| 13.9066823039| 96.0712559645 467| 3.1314032336| 14.7010614014| 95.9594621814 468| 3.1818157757| 15.5202510941| 95.8435499765 469| 3.2358985044| 16.3635980685| 95.7447673171 470| 3.2962426351| 17.2262909584| 95.6850578907 471| 3.3658487067| 18.1229332011| 95.6807747606 472| 3.4455158588| 19.0708927719| 95.7023252764 473| 3.5299623595| 20.0566903109| 95.7108412053 474| 3.6134875346| 21.0533758956| 95.6866957189 475| 3.6964417777| 22.0583407595| 95.6984715898 476| 3.7838850482| 23.0002647915| 95.6662842176 477| 3.8649953353| 23.8899924098| 95.4818197513 478| 3.9283712909| 24.7183810854| 95.0959956801 479| 3.9696645526| 25.3904012185| 94.5847492974 480| 3.9949150038| 25.8630937563| 93.806011499 481| 4.0067279826| 26.1922676359| 92.6299270194 482| 4.0075797906| 26.4100257913| 91.1537202218 483| 3.9926654415| 26.5471667913| 89.5017992961 484| 3.9645688876| 26.5112570941| 87.5430426027 485| 3.9321002619| 26.3451529261| 85.3188735394 486| 3.9026901738| 26.2216130813| 82.9697215598 487| 3.86574171| 26.3024591898| 81.1143799205 488| 3.8285905792| 26.5113735672| 79.4702852086 489| 3.8062658312| 26.8375235841| 77.491062137 490| 3.8131677244| 27.3470861618| 75.2852334926 491| 3.8494545067| 28.1236014169| 73.2311234441 492| 3.9012103341| 29.1493400696| 71.2887897905 493| 3.9539243995| 30.2683961802| 68.9253651267 494| 3.9995895443| 31.4557038269| 66.9043562592 495| 4.0484314294| 32.7161681254| 65.107411742 496| 4.0942748585| 33.9741186419| 63.2200034064 497| 4.129346185| 35.0439980169| 61.4639802445 498| 4.1535418132| 36.0145814427| 59.9232049372 499| 4.1718343585| 36.7128040067| 58.6104923588 500| 4.1746751823| 36.9774839475| 57.5386573833 501| 4.152214222| 36.87584279| 56.7205421349 502| 4.0865550247| 36.573120871| 56.2543099531 503| 3.9897205438| 36.2347966143| 56.0853846538 504| 3.8953965811| 35.7979097384| 56.0081429838 505| 3.8355462727| 35.1923869634| 55.824529377 506| 3.7844092704| 34.6834014515| 55.6175515803 507| 3.7505366918| 34.5266940938| 55.3953254338 508| 3.773315013| 34.1169755788| 55.0430957794 509| 3.8894593898| 33.9820070973| 54.499194779 510| 4.093094531| 35.4731547636| 53.8787745927 511| 4.3660353326| 38.4110302185| 53.0111790936 512| 4.6942892308| 44.1080288228| 51.6079250058 513| 5.0745689417| 49.3817447096| 46.6101512736 514| 5.5331462309| 53.4827426972| 41.6944663998 515| 6.031772839| 57.9150700203| 39.7360238916 516| 6.5238068867| 64.0159176328| 37.6550280927 517| 6.9824909276| 70.4127392804| 35.2811099274 518| 7.4348144706| 75.1752648305| 32.5954232046 519| 7.8784289364| 78.0665364212| 30.4075542343 520| 8.3086701369| 80.8783329005| 29.0960422667 521| 8.7265456383| 84.1649721602| 27.9482882837 522| 9.1343054628| 86.4482329896| 26.9399438576 523| 9.5252806971| 88.0618871753| 26.0573712443 524| 9.8928771628| 89.0287099803| 25.3290969482 525| 10.2513014198| 90.0322647191| 24.7069725657 526| 10.5940025843| 90.9374948371| 24.1060194179 527| 10.8929955288| 91.8362059661| 23.5169873529 528| 11.1215470379| 92.7095188851| 22.9664535828 529| 11.2851030456| 93.5594243194| 22.4215623139 530| 11.3918647815| 94.4184161955| 21.8482234409 531| 11.4423504887| 95.2609376342| 21.2088370971 532| 11.4343373101| 96.063193981| 20.6275203625 533| 11.3552242297| 96.8286430354| 20.2461006982 534| 11.2240169182| 97.5574478462| 20.0142031438 535| 11.0655910446| 98.2060978471| 19.8143589467 536| 10.8944986729| 98.747478745| 19.5691841779 537| 10.6917400971| 99.2141082109| 19.3462484507 538| 10.4702719159| 99.5938815584| 19.1069507117 539| 10.2469370303| 99.8687451987| 18.7984101438 540| 10.033334996| 100.0317588815| 18.3648751806 541| 9.8213151219| 100.0968609608| 17.7930491332 542| 9.6016319585| 100.0623495164| 17.1773954983 543| 9.3652162515| 99.9258648681| 16.6225866773 544| 9.0967235201| 99.6921885633| 16.1759689625 545| 8.8047853142| 99.3639267419| 15.7865034713 546| 8.5186698867| 98.933940777| 15.4179851263 547| 8.2672443368| 98.3957648056| 15.0347393804 548| 8.0492937022| 97.773501063| 14.6375918695 549| 7.8541565893| 97.049799308| 14.2402463074 550| 7.6815738766| 96.1797158547| 13.8442574235 551| 7.5317503386| 95.1601467846| 13.450876154 552| 7.408723128| 93.9861659489| 13.0579588595 553| 7.3077817017| 92.6066025166| 12.6671787263 554| 7.2216706561| 91.0684592184| 12.281645213 555| 7.1465483503| 89.3607823808| 11.9007952041 556| 7.0925555767| 87.7724350105| 11.5130884327 557| 7.0483440146| 86.2465223098| 11.1364026786 558| 6.9988846142| 84.7938161869| 10.7930223952 559| 6.933730291| 83.4194890408| 10.5011446866 560| 6.8603761483| 82.2429197775| 10.2528072032 561| 6.7821300512| 81.4159506781| 10.0327109941 562| 6.7015832153| 80.7287792695| 9.8258270094 563| 6.5966303008| 79.8990384713| 9.6268700934 564| 6.4629569424| 78.7145017934| 9.4441667421 565| 6.3630066556| 77.4298804385| 9.2748371044 566| 6.3600540104| 76.4115552684| 9.115775753 567| 6.4563211718| 75.5898555093| 8.9675886841 568| 6.6277080993| 74.7865540807| 8.8311226716 569| 6.8880454278| 73.8909291381| 8.7043047432 570| 7.2509456085| 72.9722044281| 8.5853080169 571| 7.7187444811| 72.0502000806| 8.4781874059 572| 8.2838047907| 71.1419798946| 8.3800655964 573| 8.9393548624| 70.237907285| 8.2842054281 574| 9.6511066062| 69.3148771488| 8.1842288023 575| 10.4312932055| 68.3793892371| 8.0803848706 576| 11.3463567843| 67.4241229982| 7.9770221185 577| 12.2653601604| 66.4350379767| 7.8782864908 578| 13.4898331939| 65.4158629788| 7.7871645909 579| 15.054494788| 64.3450487986| 7.7011678846 580| 17.3227804423| 63.2145099274| 7.6207580275 581| 20.7843514327| 62.0374992138| 7.5469715058 582| 25.6095393257| 60.8374686772| 7.4823262232 583| 31.0646719978| 59.5902394901| 7.4275890359 584| 36.546711588| 58.2176234597| 7.376279465 585| 43.4057590955| 56.7959975223| 7.3216603503 586| 48.5806479572| 55.4013216027| 7.2640954627 587| 54.675835038| 54.0924951108| 7.2066839261 588| 59.0591349071| 52.9520167133| 7.1432556097 589| 64.3996186899| 51.698115708| 7.0676328484 590| 67.7992809311| 50.3438469545| 6.979655367 591| 70.3397619738| 48.9658059048| 6.8817733146 592| 72.5858916615| 47.5961359181| 6.7739866913 593| 74.3908854188| 46.2447887012| 6.6559160036 594| 75.9175712263| 44.9050915038| 6.5229542624 595| 77.2359002122| 43.5785850982| 6.3801230781 596| 78.4552014748| 42.0669505791| 6.2357143403 597| 79.5293456709| 40.4747811501| 6.0970323665 598| 80.483436072| 39.2063029325| 5.9616010163 599| 81.3103642661| 38.1031671619| 5.826452956 600| 81.9887708954| 36.8461627895| 5.6895152131 601| 82.4966920306| 35.3507797774| 5.5484482845 602| 82.8161111393| 33.822540176| 5.402973227 603| 82.9816942729| 32.285815321| 5.2570077509 604| 83.0393776593| 30.8097798569| 5.114697801 605| 83.0213301322| 29.4185850531| 4.9772262071 606| 82.8812755296| 28.0808742023| 4.8420079166 607| 82.6564282509| 26.7893693361| 4.7114830005 608| 82.4028947408| 25.531641926| 4.5882426745 609| 82.1601237834| 24.3146903024| 4.4726068599 610| 81.8981445632| 23.1747172642| 4.3634265216 611| 81.6090988952| 22.10353915| 4.261219659 612| 81.2890481319| 21.0977833309| 4.1665124747 613| 80.9325127166| 20.1602494169| 4.07983727 614| 80.5406358363| 19.2930618079| 4.0005369303 615| 80.1239383292| 18.4821809771| 3.9275749693 616| 79.6930960032| 17.7061230587| 3.8598578137 617| 79.2389203758| 16.9667075139| 3.7965858284 618| 78.7609801643| 16.2781668224| 3.7394017928 619| 78.2835289009| 15.6527314634| 3.6903786792 620| 77.8308232794| 15.0994571039| 3.6514912862 621| 77.4159888455| 14.6119247282| 3.6226718277 622| 77.0199516213| 14.179189373| 3.6019228907 623| 76.618009566| 13.7903534742| 3.5871715028 624| 76.1921737354| 13.4531956482| 3.5782966215 625| 75.7869148189| 13.1652931129| 3.5776454586 626| 75.370544802| 12.9055244908| 3.5809532743 627| 74.8863770426| 12.6533742213| 3.5835558807 628| 74.2954061981| 12.4087760507| 3.5835993358 629| 73.6412975853| 12.1753214559| 3.5835993358 630| 72.8958812904| 11.9513261467| 3.5835993358 631| 72.0107730908| 11.7351058332| 3.5835925173 632| 70.9416253802| 11.5249762251| 3.5817378552 633| 69.801432652| 11.3192530324| 3.5790872341 634| 68.6207247769| 11.116251965| 3.5792683557 635| 67.423657204| 10.9137703986| 3.5854585223 636| 66.2127172132| 10.7132744721| 3.5915402014 637| 65.1900117985| 10.5255083356| 3.6018326598 638| 64.3542531999| 10.3618733375| 3.6261825163 639| 63.7016366978| 10.2336788774| 3.6738138792 640| 63.3526552488| 10.1427030819| 3.7439265858 641| 63.365889832| 10.0822488963| 3.8304327272 642| 63.6507917723| 10.0454495995| 3.9276316291 643| 64.1015402684| 10.0254384702| 4.0335847587 644| 64.6743770938| 10.0153487874| 4.1559372497 645| 65.5059573941| 10.00831383| 4.2842951215 646| 66.3640130191| 9.9974784503| 4.4062205396 647| 66.9680486865| 9.9780044691| 4.5179374715 648| 67.3143039724| 9.9476816672| 4.628189979 649| 67.4848905048| 9.9041779509| 4.7274092543 650| 67.4113672557| 9.8439891586| 4.8052304352 651| 67.0221919949| 9.749216669| 4.8510892191 652| 66.2421645018| 9.623940049| 4.8719786586 653| 65.1924613139| 9.4804675723| 4.8855030732 654| 64.0339561063| 9.3311075127| 4.9090680926 655| 62.736203314| 9.1881681437| 4.9397821697 656| 61.3454249877| 9.0639577393| 4.9730017487 657| 60.0191398824| 8.970784573| 5.0139092608 658| 59.1032046936| 8.924514894| 5.0667483585 659| 58.4130402428| 8.9410382868| 5.1236138324 660| 57.9701696046| 9.0145171036| 5.1906703667 661| 57.8099873713| 9.1376311607| 5.2798375527 662| 58.0330144203| 9.3030602741| 5.4040466258 663| 58.5336964449| 9.5034842602| 5.5691230872 664| 59.115883234| 9.7315829349| 5.7545879852 665| 59.6141620379| 9.980036111| 5.93712038 666| 60.2017143999| 10.2375338206| 6.1049174445 667| 60.7933829511| 10.4936884149| 6.2762143625 668| 61.1967615672| 10.7425400982| 6.4360091091 669| 61.2503686431| 10.9781290747| 6.5661631757 670| 61.0200966068| 11.1944955488| 6.6541498348 671| 60.5638681207| 11.3856797249| 6.7090336949 672| 59.9149159315| 11.545721807| 6.7428232636 673| 58.9489418954| 11.667354364| 6.7674369585 674| 57.8122105741| 11.7428483581| 6.7790982789 675| 56.6887166846| 11.8022556018| 6.7749125105 676| 55.5717623167| 11.8828895987| 6.7673174876 677| 54.4916505868| 12.0171157732| 6.7682008272 678| 53.4381291438| 12.2009714984| 6.7693477345 679| 52.5919095246| 12.4304630332| 6.7727042641 680| 52.0288985319| 12.703959622| 6.7907082502 681| 51.6477375249| 13.0198305095| 6.8353601976 682| 51.4120059661| 13.3764449403| 6.9075191872 683| 51.2922848045| 13.772172159| 6.9979888919 684| 51.3520961752| 14.2053814101| 7.097440936 685| 51.5399298882| 14.6408350987| 7.1967084548 686| 51.7552995938| 15.0711875173| 7.2954979132 687| 51.9139298496| 15.5700969177| 7.4046003761 688| 52.0657751935| 16.2115446233| 7.5354171916 689| 52.2250749275| 16.9598294042| 7.6946080342 690| 52.3878716837| 17.7285977705| 7.8756001706 691| 52.578855344| 18.4855930076| 8.0788437206 692| 52.8544621402| 19.1985584011| 8.3053751705 693| 53.1239773006| 19.8352372366| 8.5948246508 694| 53.2849699593| 20.3633727996| 8.9444481633 695| 53.2958588263| 20.7507083756| 9.2548607984 696| 53.2018049962| 20.9945420619| 9.4263489998 697| 52.9528855656| 21.1488069749| 9.4520556683 698| 52.4962055209| 21.2191641791| 9.3733660628 699| 51.8225783874| 21.2191641791| 9.1902801834 700| 51.8225783874| 21.2191641791| 9.1902801834 [Crédito : KOEN HUFKENS - ov5647 spectral response ](http://www.khufkens.com/ov5647-spectral-response/) Las otras tres cámaras CMOS son monocromáticas , y si bien el rango de s sensibilidad completo tambien se extiende desde el azul a 400nm hasta cerca del 1000nm o sea 1 um, el filtro pasa-altos a 700nm y los filtros dielécticos pasabanda nos permiten separar bandas angostas que resultan relevantes, en particular: RED para NDVI: 680nm +/- 10nm NIR para NDVI: 800nm +/- 10nm Otros filtros pasabanda en la región visible pueden ser útiles para detectar los marcadores espectrales de la clorofila Por último , el sensor de imágen térmico de baja resilución FLIR entrega informaciónen el rango de 8000nm a 14.000nm Queda pendiente la evaluación e incorporación al dispositivo de los nuevos sensores de imágen de InGaAs para poder obtener imágenes en el rango de 900nm to 1700nm , que cubre algunas de las marcas espectrales de absorsión del agua líquida RGB + NDVI RED + Edge RED+ NDVI NIR Effective Sensor Range: 425 nm to 950 nm (Filters field changeable by users) Color Bands: Red: 570 nm – 700 nm, Green: 480 nm – 550 nm and Blue: 400 nm – 470 nm Narrow Bands (CWL): 680 nm (NDVI Red), 700 nm (Red Edge) and (each 20 nm wide) 800 nm (NDVI NIR) Sensor térmico LWIR 8000nm - 14.000nm [Tetra Pi](https://publiclab.org/notes/khufkens/04-24-2015/tetrapi-a-well-characterized-multispectral-camera) Camera multiplexer Filters [Monitoring Vegetation From Space](http://www.eumetrain.org/data/3/36/print.htm# page_3.3.0) LWIR [Lepton](http://media.digikey.com/pdf/Data%20Sheets/FLIR%20PDFs/LEPTON_Series_Br.pdf) SWIR